Year 2 FINAL

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A wood brace used for supporting a box for structural mounting shall have a cross-section not less than nominal _____.

1 in. X 2 in.

Flexible metal conduit shall be securely fastened by a means approved by the authority having jurisdiction within _____ of termination.

1 ft

Open individual conductors shall not be smaller than _____ AWG copper for spans up to 50 ft in length and _____ AWG copper for a longer span, unless supported by a messenger wire.

10, 8

Feeder and service loads for fixed electric space-heating loads shall be calculated at _____ percent of the total connected load.

100

Feeder grounded conductors that are not connected to an overcurrent device shall be permitted to be sized at _____ percent of the continuous and noncontinuous load.

100

Handhole enclosure covers shall require the use of tools to open, or they shall weigh over _____ lb.

100

Type AC cable shall be secured at intervals not exceeding 4 1/2 ft and within _____ in. of every outlet box, cabinet, conduit body, or fitting.

Type MC cable containing four or fewer conductors, sized no larger than 10 AWG, shall be secured within _____ in. of every box, cabinet, fitting, or other cable termination.

Underground service conductors that supply power to limited loads of a single branch circuit shall not be smaller than _____.

12 AWG copper

What is the minimum cover requirement for Type UF cable supplying power to a 120V, 15A GFCI-protected circuit outdoors under a driveway of a one-family dwelling?

12 in.

When taps are not over 10 ft in length for field installations, and they leave the enclosure or vault in which the tap is made, the ampacity of the tap conductors cannot be less than _____ the rating of the device protecting the feeder.

1/10

Cables laid in wood notches require protection against nails or screws by using a steel plate at least _____ in. thick, installed before the building finish is applied.

1/16

Where nonmetallic-sheathed cable or multiconductor Type UF cable is used, the sheath shall extend not less than _____ in. inside the box and beyond any cable clamp.

1/4

Noncombustible surfaces that are broken or incomplete shall be repaired so there will be no gaps or open spaces greater than _____ at the edge of a cabinet or cutout box employing a flush-type cover.

1/8 in.

According to the NEC, the volume of a 3 in. x 2 in. x 2 in. device box is _____ cu in.

EMT shall be securely fastened in place at intervals not to exceed _____ ft.

For interior installations of Type SE cable with ungrounded conductor sizes _____ AWG and smaller, where installed in thermal insulation, the ampacity shall be in accordance with 60°C (140°F) conductor temperature rating.

Hallways in dwelling units that are _____ ft long or longer require a receptacle outlet.

In order for a metal underground water pipe to be used as a grounding electrode, it shall be in direct contact with the earth for _____.

10 ft or more

Nonmetallic-sheathed cables can enter the top of surface-mounted cabinets, cutout boxes, and meter socket enclosures through nonflexible raceways not less than 18 in. and not more than _____ in length if all of the required conditions are met.

10 ft.

Listed FMC can be used as the equipment grounding conductor if the length in any ground return path does not exceed 6 ft and the circuit conductors contained in the conduit are protected by overcurrent devices rated at _____ or less.

20A

Two or more __________ small-appliance branch circuits shall be provided to supply power for receptacle outlets in the dwelling unit kitchen, dining room, breakfast room, pantry, or similar dining areas.

20A

The minimum feeder conductor ampacity shall be no less than the non-continuous load plus _____ percent of the continuous load, and not less than the maximum load after the application of adjustment and correction factors.

125

The minimum size copper conductor permitted for voltage ratings up to 2,000V shall be _____ AWG.

Aluminum or copper-clad aluminum conductors external to buildings or equipment enclosures shall not be terminated within _____ in. of the earth.

Receptacle outlets in or on floors shall not be counted as part of the required number of receptacle outlets for dwelling unit wall spaces, unless they are located within _____ in. of the wall.

The minimum clearance for overhead feeder conductors not exceeding 1,000V that pass over commercial areas subject to truck traffic is _____ ft.

The minimum clearance for overhead service conductors not exceeding 1,000V that pass over parking areas subject to truck traffic is _____ ft.

Two intermediate metal or rigid metal conduits threaded wrenchtight into an enclosure can be used to support an outlet box containing devices or luminaires, if each raceway is supported within _____ in. of the box.

When installing PVC conduit underground without concrete cover, there shall be a minimum _____ in. of cover.

Where used outside, aluminum or copper-clad aluminum grounding electrode conductors shall not be terminated within _____ in. of the earth.

If a set of 120/240V overhead feeder conductors terminates at a through-the-roof raceway or approved support, with not more than 6 ft of these conductors, 4 ft horizontally, passing over the roof overhang, the minimum clearance above the roof for these conductors is not less than _____.

18 in.

If a set of 120/240V overhead service conductors terminate at a through-the-roof raceway or approved support, with less than 6 ft of these conductors passing over the roof overhang, the minimum clearance above the roof for these service conductors shall be _____.

18 in.

A minimum working space depth of _____ ft to live parts of equipment operating at 277 volts-to-ground is required where there are exposed live parts on one side and no live or grounded parts on the other side.

The required working space for access to live parts of equipment operating at 300 volts-to-ground, where there are exposed live parts on one side and grounded parts on the other side, is _____ ft.

3 1/2

EMT run between termination points shall be securely fastened within _____ of each outlet box, junction box, device box, cabinet, conduit body, or other tubing termination.

3 ft

Article _____ covers requirements for outside branch circuits and feeders run on or between buildings, structures, or poles on the premises.

225

Service conductors and equipment for control and protection of services and their installation requirements are covered in Article _____.

230

The ampacity adjustment factors in 310.15(C)(1) shall be applied to a metal wireway only where the number of current-carrying conductors in any cross section of the wireway exceeds _____.

The working space in front of the electric equipment shall not be less than _____ in. wide, or the width of the equipment, whichever is greater.

Where equipment operating at 1,000V, nominal, or less to ground and likely to require examination, adjustment, servicing, or maintenance while energized is required by installation instructions or function to be located in a space with limited access, the width of the working space shall be the width of the equipment enclosure or a minimum of _____ in., whichever is greater.

The feeder/service calculated load for a multifamily dwelling containing nine 12 kW ranges is _____.

24000W

Article _____ provides the general requirements, installation requirements, and connection requirements for overvoltage protection and overvoltage protective devices.

242

Where flexibility is not required after installation, liquidtight flexible metal conduit shall be permitted to be used as an equipment grounding conductor when installed in accordance with _____.

250.118(6)

Article _____ covers the use, installation, and construction specifications for armored cable, Type AC.

320

The use, installation, and construction specifications of nonmetallic-sheathed cable are covered within Article _____.

334

Article _____ covers the use, installation, and construction specifications for intermediate metal conduit (IMC) and associated fittings.

342

Listed outlet boxes to support ceiling-suspended fans that weigh more than _____ lb shall have the maximum allowable weight marked on the box.

The use, installation, and construction specifications for liquidtight flexible metal conduit (LFMC) and associated fittings are covered within Article _____.

350

Article _____ covers the use, installation, and construction specifications for liquidtight flexible nonmetallic conduit (LFNC) and associated fittings.

356

Article _____ covers the use, installation, and construction specifications for electrical metallic tubing (EMT) and associated fittings.

358

Where raceways contain insulated circuit conductors _____ AWG and larger, the conductors shall be protected from abrasion during and after installation by an identified fitting providing a smoothly rounded insulating surface.

Horizontal runs of Type AC cable installed in wooden or metal framing members or similar supporting means shall be considered supported and secured where such support does not exceed _____ ft intervals.

4 1/2

What is the minimum size copper supply-side bonding jumper for a service raceway containing 4/0 THHN aluminum conductors?

4 AWG copper

Where there are no adjustment or correction factors required, the feeder conductors for a rated service of between 100A and _____ supplying the entire load associated with an individual dwelling unit, may be sized applying Table 310.12.

400A

Additional requirements for installing receptacles in dwelling unit countertops and work surfaces can be found in Article _____.

406

A meeting room that is at least 12 ft wide and that has a floor area of at least 215 sq ft shall have at least one receptacle outlet located in the floor at a distance not less than _____ from any fixed wall for each 215 sq ft or major portion of floor space.

6 ft

Conductors for feeders sized to prevent a voltage drop where the maximum total voltage drop on both feeders and branch circuits to the farthest outlet does not exceed ________ percent, will provide reasonable efficiency of operation.

EMT run in unbroken lengths between termination points, are permitted to be securely fastened within _____ ft of each outlet box, junction box, device box, cabinet, conduit body, or other tubing termination where structural members do not readily permit fastening.

A luminaire that weighs more than _____ lb can be supported by an outlet box that is listed for the weight of the luminaire to be supported.

Boxes used at luminaire or lampholder outlets in a ceiling shall be designed so that a luminaire or lampholder can be attached and the boxes shall be required to support a luminaire weighing a minimum of _____ lb.

Boxes used at luminaire outlets on a vertical surface shall be marked on the interior of the box to indicate the maximum weight of the luminaire that is permitted to be supported by the box if other than _____ lb.

An equipment bonding jumper can be installed on the outside of a raceway, providing the length of the equipment bonding jumper is not more than _____ in. and the equipment bonding jumper is routed with the raceway.

The conductors, including splices and taps, in a metal surface raceway having a removable cover shall not fill the raceway to more than _____ percent of its cross-sectional area at the point of the splice or tap.

75%

Where installed in raceways, conductors _____ AWG and larger shall be stranded, unless specifically permitted or required elsewhere in the NEC.

The minimum size service-drop conductor permitted is _____ AWG copper or _____ AWG aluminum or copper-clad aluminum.

8, 6

For an island or peninsular countertop, at least one receptacle outlet shall be provided for the first _____ sq ft or fraction thereof, of the countertop or work surface.

Branch Circuit, Multiwire

A branch circuit that consists of two or more ungrounded conductors that have a voltage between them, and a grounded conductor that has equal voltage between it and each ungrounded conductor of the circuit and that is connected to the neutral or grounded conductor of the system. CMP-2

Voltage, Nominal.

A nominal value assigned to a circuit or system for the purpose of conveniently designating its voltage class (e.g., 120/240 volts, 480Y/277 volts, 600 volts). (CMP-1) Informational Note No. 1: The actual voltage at which a circuit operates can vary from the nominal within a range that permits satisfactory operation of equipment. Informational Note No. 2: See ANSI C84.1-2011, Voltage Ratings for Electric Power Systems and Equipment (60 Hz). Informational Note No. 3: Certain battery units may be consid‐ ered to be rated at nominal 48 volts dc, but may have a charging float voltage up to 58 volts. In dc applications, 60 volts is used to cover the entire range of float voltages

Clothes Closet

A nonhabitable room or space intended primarily for storage of garments and apparel. CMP-1

Innerduct

A nonmetallic raceway placed within a larger race‐ way. (CMP-16)

Outlet

A point on the wiring system at which current is taken to supply utilization equipment. (CMP-1)

Branch Circuit, Appliance

A branch circuit that supplies energy to one or more outlets to which appliances are to be connected and that has no permanently connected luminaires that are not a part of an appliance. CMP-2

Branch Circuit, Individual

A branch circuit that supplies only one utilization equipment. CMP-2

Branch Circuit, General-Purpose

A branch circuit that supplies two or more receptacles or outlets for lighting and appliances. CMP-2

Dormitory Unit

A building or a space in a building in which group sleeping accommodations are provided for more than 16 persons who are not members of the same family in one room, or a series of closely associated rooms, under joint occupancy and singe management, with or without meals, but without individual cooking facilities.

Cord Connector [as applied to Hazardous, Classified Loca‐ tions

A fitting intended to terminate a cord to a box or simi‐ lar device and reduce the strain at points of termination and may include an explosionproof, a dust-ignitionproof, or a flameproof seal. CMP-14

Electric Sign

A fixed, stationary, or portable self-contained, electrically operated and/or electrically illuminated utilization equipment with words or symbols designed to convey informa‐ tion or attract attention. (CMP-18)

Volatile Flammable Liquid

A flammable liquid having a flash point below 38°C (100°F), or a flammable liquid whose temperature is above its flash point, or a Class II combustible liquid that has a vapor pressure not exceeding 276 kPa (40 psia) at 38°C (100°F) and whose temperature is above its flash point. (CMP-14)

Vented Power Fuse

A fuse with provision for the escape of arc gases, liquids, or solid particles to the surrounding atmosphere during circuit interruption.

Non-vented Power Fuse

A fuse without intentional provision for the escape of arc gases, liquids, or solid particles to the atmosphere during circuit interruption.

Retrofit Kit

A general term for a complete subassembly of parts and devices for field conversion of utilization equipment. (CMP-18)

Equipment

A general term, including fittings, devices, appli‐ ances, luminaires, apparatus, machinery, and the like used as a part of, or in connection with, an electrical installation. (CMP-1)

Askarel

A generic term for a group of nonflammable synthetic chlorinated hydrocarbons used as electrical insulating media

Guarded

Covered, shielded, fenced, enclosed, or otherwise protected by means of suitable covers, casings, barriers, rails, screens, mats, or platforms to remove the likelihood of approach or contact by persons or objects to a point of danger. (CMP-1)

A confined space is dangerous when there are: a. Atmospheric hazards b. Physical hazards c. Underground utilities d. All of these

A hard hat should be worn in working areas where there is a possible danger of head injury from: a. Impact b. Electrical shock or burns c. Falling or flying objects d. All of the above

Wiring methods permitted in the ceiling areas used for environmental air include _____.

EMT, FMC of any length, and RMC without an overall metallic covering (all of these)

Type NM cable shall be protected from physical damage by _____.

EMT, Schedule 80 PVC conduit, or RMC (any of these)

The ampacity adjustment factors of Table 310.15(C)(1)) do not apply to Type AC or Type MC cable without an overall outer jacket, if which of the following condition(s) is(are) met.

Each cable has not more than three current-carrying conductors., The conductors are 12 AWG copper, and No more than 20 current-carrying conductors are installed without maintaining spacing. (all of these)

A Type 2 surge protective device is permitted to be connected on either the line or load side of the service equipment. True or False

False

A grounding electrode at a separate building or structure shall be required where one multiwire branch circuit serves the building or structure.

False

Conductors supplied under the tap rules are allowed to supply another conductor using the tap rules. True or False

False

Examples of approved means of achieving terminal connection torque values include torque tools or an experienced qualified person that can demonstrate that the proper torque has been applied. True or False

False

For grounded systems, the earth is considered an effective ground-fault current path

False

Grounding electrode conductors or supply-side bonding jumpers or conductors shall not be permitted within raceways containing service conductors. True or False

False

If a disconnecting means is required to be locked in the open position by the NEC, the disconnect shall be capable of being locked in the open or closed position. True or False

False

In dwelling units, outdoor receptacles can be connected to one of the 20A small-appliance branch circuits. True or False

False

In existing installations where a voltage system(s) already exists and a different voltage system is being added, it shall be permissible to mark only the old system voltage. True or False

False

Installations shall comply with the material located in the NEC Annexes because they are part of the requirements of the Code. Answer 1: True Answer 2: False

False

Molded-case circuit breakers are permitted to be reconditioned. True or False

False

One or more 120V, 15A branch circuits shall be provided to supply bathroom(s) receptacle outlet(s) required by 210.52(D). True or False

False

Overhead service conductors or service equipment can be supported to hardwood trees. True or False

False

Part I of Article 100 contains definitions intended to apply whenever the terms ae used throughout this Code. Part III of Article 100 contains definitions for ____________.

Hazardous (classified) locations

Part III of Article 100 contains definitions which are applicable to

Hazardous (classified) locations

Location, Wet

Installations underground or in concrete slabs or masonry in direct contact with the earth; in locations subject to saturation with water or other liquids, such as vehicle wash‐ ing areas; and in unprotected locations exposed to weather. (CMP-1)

Coordination, Selective, Selective Coordination

Localization of an overcurrent condition to restrict outages to the circuit or equipment affected, accomplished by the selection and installa‐ tion of overcurrent protective devices and their ratings or settings for the full range of available overcurrents, from over‐ load to the maximum available fault current, and for the full range of overcurrent protective device opening times associ‐ ated with those overcurrents. CMP-10

Utilization equipment weighing not more than 6 lb can be supported to any box or plaster ring secured to a box, provided the equipment is secured with at least two _____ or larger screws.

No. 6

Ungrounded

Not connected to ground or to a conductive body that extends the ground connection. (CMP-5)

Isolated (as applied to location)

Not readily accessible to persons unless special means for access are used. (CMP-1)

Exposed (as applied to wiring methods)

On or attached to the surface or behind panels designed to allow access. (CMP-1)

A rigid nonmetallic raceway of circular cross section, with integral or associated couplings, connectors, and fittings for the installation of electrical conductors and cables describes _____.

PVC

Article 352 covers the use, installation, and construction specifications for _____ and associated fittings.

PVC

_____ on equipment to be grounded shall be removed from contact surfaces to ensure good electrical continuity.

Paint, lacquer, or enamel (any of these)

Identified (as applied to equipment)

Recognizable as suitable for the specific purpose, function, use, environment, application, and so forth, where described in a particular Code requirement. (CMP-1) Informational Note: Some examples of ways to determine suitability of equipment for a specific purpose, environment, or application include investigations by a qualified testing laboratory (listing and labeling), an inspection agency, or other organizations concerned with product evaluation.

Concealed

Rendered inaccessible by the structure or finish of the building. CMP-1 Informational Note: Wires in concealed raceways are considered concealed, even though they may become accessible by with‐ drawing them.

Nonautomatic

Requiring human intervention to perform a function. (CMP-1)

Circuit breakers used to switch 120V and 277V fluorescent lighting circuits shall be listed and marked _____.

SWD or HID

Service Cable

Service conductors made up in the form of a cable. (CMP-4)

___________ at other than dwelling units shall be legibly field marked with the available fault current, include the date the fault-current calculation was performed, and be of sufficient durability to withstand the environment involved.

Service equipment

Main bonding jumpers and system bonding jumpers shall not be smaller than specified in _____.

Table 250.102(C)(1)

Grounded Conductor

A system or circuit conductor that is intentionally grounded. (CMP-5) Note: Although and equipment grounding conductor is grounded, it is not considered a grounded conductor.

Stand-Alone System

A system that supplies power independently of an electrical production and distribution network. (CMP-4)

Expulsion Fuse Unit (Expulsion Fuse)

A vented fuse unit in which the expulsion effect of gases produced by the arc and lining of the fuse holder, either alone or aided by a spring, extinguishes the arc.

Power Fuse Unit

A vented, non-vented, or controlled vented fuse unit in which the arc is extinguished by being drawn through solid material, granular material, or liquid, either alone or aided by a spring.

Messenger or Messenger Wire

A wire that is run along with, or integral to, a cable or conductor to provide mechanical support for the cable or conductor

Type _____ cable is a fabricated assembly of insulated conductors in a flexible interlocked metallic armor.

Feeder

All circuit conductors between the service equipment, the source of a separately derived system, or other power supply source and the final branch-circuit overcurrent device. (CMP-2)

Overcurrent

Any current in excess of the rated current of equipment or the ampacity of a conductor. It may result from overload, short circuit, or ground fault. (CMP-10) Informational Note: A current in excess of rating may be accom‐ modated by certain equipment and conductors for a given set of conditions. Therefore, the rules for overcurrent protection are specific for particular situations

Remote-Control Circuit

Any electrical circuit that controls any other circuit through a relay or an equivalent device. (CMP-3)

Signaling Circuit

Any electrical circuit that energizes signaling equipment. (CMP-3)

Hoistway

Any shaftway, hatchway, well hole, or other vertical opening or space in which an elevator or dumbwaiter is designed to operate. (CMP-12)

The _____ has the responsibility for deciding on the approval of equipment and materials. A: manufacturer B: authority having jurisdiction C: testing agency D: the owner of the premises

The type of eye protection that should be used to guard against dust particles is: a. Safety glasses b. Goggles c. Face shields d. Contact Lenses

The type of hand protection that should be used to prevent exposure to caustic chemical is: a. Natural or synthetic rubber gloves b. Rubber, vinyl, or neoprene gloves c. Leather gloves d. Metal mesh gloves

There are many different makes and styles of respirators, but all of them fall into two types: a. Particulate respirator and combination respirators b. Air-purifying respirators and atmosphere-supplying respirators c. Air-supplied respirators and self-contained breathing apparatus d. All of the above

if required to wear a respirator, you must first have a: a. Fit test b. Medical evaluation c. Selection orientation d. All of the above

Hazards that can cause electrical injuries include: a. incomplete circuit b. ground fault protection c. cracked extension cord d. proper use of equipment

If an incident results in any fatalities or 3 or more persons hospitalized, your employer must notify: a. Local Police b. National Response Center c. Occupations Safety and Healy Administration d. Nation Institute for Occupation Safety and Health

If sufficient ventilation can't be obtained in a confined space, you should use a(n) _____. a. Particulate respirator b. Escape respirator c. Air line respirator d. All of these

When the Code uses "_____," it means the identified actions are allowed but not required, and they may be options or alternative methods. A: shall B: shall not C: shall be permitted D: shall or shall not

The number of conductors permitted in LFNC shall not exceed the percentage fill specified in _____.

Chapter 9, Table 1

To determine the feeder calculated load for ten 3 kW household cooking appliances, use _____ of Table 220.55

Column A

Voltage (of a circuit)

The greatest root-mean-square (rms) (effective) difference of potential between any two conductors of the circuit concerned. (CMP-1) Informational Note: Some systems, such as 3-phase 4-wire, single-phase 3-wire, and 3-wire direct current, may have various circuits of various voltages.

Prime Mover

The machine that supplies mechanical horsepower to a generator.

Available Fault Current

The maximum amount of current that can be delivered at a given point in the electrical system.

Ampacity

The maximum current, in amperes, that a conductor can carry continuously under the conditions of use without exceeding its temperature rating

A grounding electrode conductor, sized in accordance with 250.66, shall be used to connect the equipment grounding conductors, the service-equipment enclosures, and, where the system is grounded, the grounded service conductor to the grounding electrode(s).

True

A grounding electrode shall be required if a building or structure is supplied by a feeder.

True

A laundry receptacle outlet shall not be required in each dwelling unit of a multifamily building, if laundry facilities are provided on the premises for all building occupants. True or False

True

Chapters 5, 6, and 7 apply to special occupancies, special equipment, or other special conditions and may supplement or modify the requirements in Chapters 1 through 7. Answer 1: True Answer 2: False

True

Communications wiring such as telephone, antenna, and CATV wiring within a building shall not be required to comply with the installation requirements of Chapters 1 through 7, except where specifically referenced in Chapter 8. Answer 1: True Answer 2: False

True

Connections, taps, or extensions made from paralleled conductors shall connect to all conductors of the paralleled set.

True

Due to its power limitations, a Class 2 circuit considers safety from a fire initiation standpoint and provides acceptable protection from electric shock. True or False

True

Equipment intended to interrupt current at fault levels shall have an interrupting rating at nominal circuit voltage at least equal to the current that is available at the line terminals of the equipment. True or False

True

Explanatory material, such as references to other standards, references to related sections of the NEC, or information related to a Code rule, are included in the form of Informational Notes. Answer 1: True Answer 2: False

True

FMC can be installed exposed or concealed where not subject to physical damage.

True

Feeder conductors shall be permitted to be sized at 100 percent of the continuous and noncontinuous load where a portion of the feeder is connected at both its supply and load ends to separately installed pressure connections. True or False

True

Feeder taps are permitted to be located at any point on the load side of the feeder overcurrent protective device. True or False

True

Field marking of maximum available fault current at a service are not required in industrial installation where conditions of maintenance and supervision ensure that only qualified persons service the equipment. True or False

True

In many circumstances, the authority having jurisdiction can be a property owner or their designated agent. True or False

True

In other than dwelling locations, GFCI protection is required for all single-phase receptacles rated 150V to ground or less, 50A or less and three-phase receptacles rated 150V to ground or less, 100A or less in unfinished portions or areas of the basement. True or False

True

In other than dwelling units, GFCI protection shall be provided for all outdoor single-phase receptacles rated 150V to ground or less, 50A or less, and three-phase receptacles rated 150V to ground or less, 100A or less. True or False

True

Lighting outlets in guest rooms or guest suites shall be permitted to be controlled by occupancy sensors that are located at a customary wall switch location and equipped with a manual override that allows the sensor to function as a wall switch. True or False

True

Listed or labeled equipment shall be installed and used in accordance with any instructions included in the listing or labeling. True or False

True

Local metal underground systems or structures such as underground tanks are permitted to serve as grounding electrodes.

True

NFPA 70E, Standard for Electrical safety in the Workplace, provides information to help determine the electrical safety training requirements expected of a qualified person. True or False

True

Supplementary overcurrent devices used in luminaires or appliances are not required to be readily accessible. True or False

True

Surge protective devices shall be listed. True or False

True

Surge protective devices shall be marked with a short-circuit current rating and shall not be installed where the available fault current is in excess of that rating. True or False

True

The 125 percent multiplier for a continuous load as specified in 210.20(A) is included when using the unit loads in table 220.12 for calculating the minimum lighting load for auditoriums, lodge rooms, banks, and stores. True or False

True

The 3 VA per sq ft general lighting load for dwelling units includes general-use receptacles and lighting outlets. True or False

True

The NEC does not cover electrical installations in ships, watercraft, railway rolling stock, aircraft, or automotive vehicles. Answer 1: True Answer 2: False

True

The NEC requires tested series-rated installations of circuit breakers or fuses to be legibly marked in the field to indicate the equipment has been applied with a series combination rating. True or False

True

The area above the dedicated space required by 110.26(E)(1)(a) is permitted to contain foreign systems, provided protection is installed to avoid damage to the electrical equipment from condensation, leaks, or breaks in such foreign systems. True or False

True

Two or more grounding electrodes bonded together are considered a single grounding electrode system.

True

Type 1 SPDs shall be permitted to be connected as specified in 242.14. True or False

True

Underground service-entrance conductors shall be protected against physical damage. True or False

True

Unless otherwise specified, for purposes of calculating branch-circuit and feeder loads, nominal system voltages of 120, 120/240, 208Y/120, 208Y/120, 240, 347, 480Y/277, 480, 600Y/347, and 600 volts are to be used. True or False

True

When supplying a grounded system at a separate building or structure, an equipment grounding conductor shall be run with the supply conductors and connected to the building or structure disconnecting means and to the grounding electrode(s).

True

Where a branch circuit supplies continuous loads or any combination of continuous and noncontinuous loads, the rating of the overcurrent device shall not be less than the noncontinuous load plus 125 percent of the continuous load. True or False

True

Receptacles installed in a dwelling unit kitchen to serve countertop surfaces shall be supplied by not fewer than _____ small-appliance branch circuits.

Two

Structure

That which is built or constructed, other than equipment. (CMP-1)

Bonding Jumper, Main

The connection between the grounded circuit conductor and the equipment grounding conductor at the service. CMP-5

Bonding Jumper, System

The connection between the groun‐ ded circuit conductor and the supply-side bonding jumper, or the equipment grounding conductor, or both, at a separately derived system. CMP-5

Bonding Jumper, Equipment

The connection between two or more portions of the equipment grounding conductor. CMP-5

For grounded systems, normally noncurrent-carrying conductive materials enclosing electrical conductors or equipment, or forming part of such equipment, shall be connected together and to the _____ to establish an effective ground-fault current path.

electrical supply source

Expansion, expansion-deflection, or deflection fittings and telescoping sections of metal raceways shall be made _____ continuous by equipment bonding jumpers or other means.

electrically

Ferrous metal raceways and enclosures for grounding electrode conductors shall be bonded at each end of the raceway or enclosure to the grounding electrode or grounding electrode conductor to create a(an) _____ parallel path.

electrically

Type NM cable shall not be used _____.

embedded in poured cement, concrete, or aggregate

Where _____, a grounding electrode conductor or its enclosure shall be securely fastened to the surface on which it is carried.

exposed

Type NM cable can be installed as open runs in dropped or suspended ceilings in other than one- and two-family and multifamily dwellings.

false

Type NM cables shall not be used in one- and two-family dwellings exceeding three floors above grade.

false

Type UF cable can be used for service conductors.

false

Type UF cable can be used in commercial garages.

false

When armored cable is run parallel to the sides of rafters, studs, or floor joists in an accessible attic, the cable shall be protected with running boards.

false

Where isolated metal water piping systems are installed in a multiple-occupancy building, the water pipes can be bonded with bonding jumpers sized in accordance with 250.104(D).

false

Wood braces shall have a cross section not more than 1 in.

false

Which of the following metal parts shall be protected from corrosion?

ferrous metal raceways, elbows, and boxes (all of these)

For a feeder-supplied building or structure, Type 2 SPDs shall be connected at the building or structure anywhere on the load side of the _____.

first overcurrent device

Type 2 surge protective device(s) shall be connected on the load side of the _____ in a separately derived system.

first overcurrent device

Nonmetallic-sheathed cable shall be permitted to be unsupported where the cable is _____.

fished between access points through concealed spaces in finished buildings or structures

Where a luminaire stud or hickey is present in the box, _____ allowance in accordance with Table 314.16(B) shall be made for each type of fitting, based on the largest conductor present in the box.

a single volume

Joints between PVC conduit, couplings, fittings, and boxes shall be made by _____.

an approved method

Joints between lengths of ENT, couplings, fittings, and boxes shall be made by _____.

an approved method

For a separate building or structure supplied by a separately derived system when overcurrent protection is provided where the conductors originate, the supply conductors shall contain _____.

an equipment grounding conductor

Steel or aluminum cable tray systems shall be permitted to be used as an equipment grounding conductor, provided the cable tray sections and fittings are identified as _____, among other requirements.

an equipment grounding conductor

When FMC is used where flexibility is necessary to minimize the transmission of vibration from equipment or to provide flexibility for equipment that requires movement after installation, _____ shall be installed.

an equipment grounding conductor

Where raceways contain 4 AWG or larger insulated circuit conductors entering a cabinet, box, enclosure, or raceway, the conductors shall be protected by _____.

an identified fitting that provides a smooth rounded insulating surface, a listed metal fitting that has smooth rounded edges, or threaded hubs that provide a smooth rounded or flared entry. (any of these)

One or more equipment grounding conductors brought into a nonmetallic outlet box shall be arranged such that a connection can be made to _____ in that box requiring connection to an equipment grounding conductor.

and fitting or device

Where caution, warning, or danger signs or labels are required by this Code, the labels shall warn of the hazards using effective _____________.

any combination of words, colors, or symbols

Where corrosion protection is necessary for ferrous metal equipment and the conduit is threaded in the field, the threads shall be coated with a(an) _____ electrically conductive, corrosion-resistant compound.

approved

_____ drainage openings not smaller than 1/8 in. and not larger than 1/4 in. in diameter shall be permitted to be installed in the field in boxes or conduit bodies listed for use in damp or wet locations.

approved

Where exposed to the weather, raceways enclosing service-entrance conductors shall be _____ for use in wet locations and arranged to drain.

approved or listed

Where a method to reduce clearing time for fuses rated 1,200A or greater is required in accordance with 240.67(B), the _____ reduction system shall be performance tested when first installed on site.

arc energy

Outside feeder tap conductors can be of unlimited length without overcurrent protection at the point they receive their supply if the tap conductors _____.

are protected from physical damage, terminate at a single circuit breaker or a single set of fuses that limits the load to the ampacity of the tap conductors, and the overcurrent device is part of the building feeder disconnect (all of these)

Outside secondary conductors can be of unlimited length without overcurrent protection at the point they receive their supply if the conductors _____.

are protected from physical damage, terminate at a single overcurrent device equal to or less than their ampacity, and the overcurrent device is part of the building disconnect (all of these)

Plug fuses of the Edison-base type shall be used only _____.

as a replacement in existing installations

The connection of the system bonding jumper for a separately derived system shall be made _____ on the separately derived system from the source to the first system disconnecting means or overcurrent device.

at any single point

FMC shall be supported and secured _____.

at intervals not exceeding 4 1/2 ft

LFMC shall be supported and secured _____.

at intervals not exceeding 4 1/2 ft

Where independent support wires of a suspended ceiling assembly are used to support raceways, cable assemblies, or boxes above a ceiling, they shall be secured at _____ end(s).

both

A(An) _____ with an integral bushed opening shall be used at the end of a conduit or other raceway that terminates underground where the conductors or cables emerge as a direct burial wiring method.

bushing or terminal fitting

IMC shall be secured _____.

by fastening within 3 ft of each outlet box, junction box, device box, cabinet, conduit body, or other conduit termination, or within 5 ft of a box or termination fitting when structural members do not readily permit the raceway to be secured within 3 ft of the termination, except when the IMC is within 3 ft of the service head for an above-the-roof termination of a mast (any of these)

Where a premises wiring system contains feeders supplied from more than one nominal voltage system, each ungrounded conductor of a feeder shall be identified by phase or line and system by _____, or other approved means.

color coding, marking tape, or tagging (any of these)

The independent support wires for supporting electrical wiring methods in a fire-rated ceiling assembly shall be distinguishable from fire-rated suspended-ceiling framing support wires by _____.

color, tagging, or other effective means (any of these)

In walls constructed of wood or other _____ material, electrical cabinets shall be flush with the finished surface or project therefrom.

combustible

Table 220.56 may be applied to determine the load for thermostatically controlled or intermittently used _____ and other kitchen equipment in a commercial kitchen.

commercial electric cooking equipment, dishwasher booster heaters, and water heaters (all of these)

Each run of cable tray shall be _____ before the installation of cables.

completed

By definition, an attachment fitting is different from an attachment plug because no _____________ is associated with the fitting.

cord

A rebar-type concrete-encased electrode installed in accordance with 250.52(A)(3) with an additional rebar section extended from its location within the concrete foundation or footing to an accessible location that is not subject to _____ shall be permitted for connection of grounding electrode conductors and bonding jumpers.

corrosion

Galvanized steel, stainless steel, and red brass RMC elbows, couplings, and fittings shall be permitted to be installed in concrete, in direct contact with the earth, or in areas subject to severe corrosive influences when protected by _____ approved for the condition.

corrosion Protection

Running threads shall not be used on RMC for connection at _____.

couplings

\"_____\" is defined as the shortest distance measured between a point on the top surface of direct-burial cable and the top surface of the finished grade.

cover

In completed installations, each outlet box shall have a _____.

cover, faceplate, or a canopy (any of these)

GFCI protection shall be provided for lighting outlets not exceeding 120 volts installed in ________________.

crawl spaces

The ampacity adjustment factors of 310.15(C)(1) shall not apply to conductors installed in surface metal raceways where the _____.

cross-sectional area exceeds 4 sq in., current-carrying conductors do not exceed 30 in number, or total cross-sectional area of all conductors does not exceed 20 percent of the interior cross-sectional area of the raceway (all of these )

The purpose of having all parallel conductor sets installed in metal wireways within the same group, is to prevent _____ imbalance in the paralleled conductors due to inductive reactance.

current

Fuseholders for cartridge fuses shall be so designed that it is difficult to put a fuse of any given class into a fuseholder that is designed for a _____ lower or a _____ higher than that of the class to which the fuse belongs.

current, voltage

A device that, when interrupting currents in its current-limiting range, reduces the current flowing in the faulted circuit to a magnitude substantially less than that obtainable in the same circuit if the device were replaced with a solid conductor having comparable impedance, is a(an) "_____ protective device."

current-limiting overcurrent

Support wire(s) used for enclosure support in suspended ceilings shall be fastened at _____ so as to be taut within the ceiling cavity.

each end

Where the circuit breaker handles are operated vertically, the \"up\" position of the handle shall be the \"_____\" position.

The required heating, air-conditioning, and refrigeration equipment receptacle outlet shall be located _________________ the equipment.

on the same level

A building or structure shall be supplied by a maximum of _____ feeder(s) or branch circuit(s), unless specifically permitted otherwise.

one

A building or structure shall be supplied by a maximum of _____ service(s), unless specifically permitted otherwise.

one

At least _____ support method(s) shall be provided for each conductor at the top of the vertical raceway or as close to the top as practical if the vertical rise exceeds the values in Table 300.19(A).

one

Fiber optic cables installed exposed to ______________, or other contaminants may result in an undetermined alteration of optical fiber cable properties.

paint or plaster, cleaners or abrasives, corrosive residues (any of these)

Fiber optic cables installed exposed to _____, or other contaminants may result in an undetermined alteration of optical fiber cable properties.

paint or plaster, cleaners or abrasives, or corrosive residues (any of these)

The manufacturers name, trademark, or other descriptive marking by which the organization responsible for the product can be identified shall be __________________.

placed on all electrical equipment

In other than dwelling units, all single-phase receptacles rated 150 volts-to-ground or less, 50A or less, and three-phase receptacles rated 150 volts-to-ground or less, 100A or less installed in(on) _____ shall have GFCI protection for personnel.

rooftops, kitchens, and bathrooms (all of these)

Where portions of a cable raceway or sleeve are subjected to different temperatures and condensation is known to be a problem, the _____ shall be sealed to prevent the circulation of warm air to a colder section of the raceway or sleeve.

raceway or sleeve

All conductors of the same circuit, including the grounded and equipment grounding conductors and bonding conductors shall be contained within the same _____, unless otherwise permitted elsewhere in the Code.

raceway, cable, trench (all of these)

The normally noncurrent-carrying metal parts of service equipment, such as service _____, shall be bonded together.

raceways or service cable armor, equipment enclosures containing service conductors, including meter fittings, boxes, or the like, interposed in the service raceway or armor, or cable trays ( all of these)

In industrial facilities where conditions of maintenance and supervision ensure that only qualified persons will service the installation, cable tray systems can be used to support _____.

raceways, cables, and boxed and conduit bodies (all of these)

Backfill used for underground wiring shall not damage _____ or prevent adequate compaction of fill or contribute to corrosion.

raceways, cables, or conductors (all of these)

The disconnecting means for a building supplied by a feeder shall be installed at a(an) _____ location.

readily accessible

Cut ends of RMC shall be _____ or otherwise finished to remove rough edges.

reamed

As applied to electrical equipment, the term "reconditioned" may be interchangeable with the term(s) "______________."

rebuilt, refurbished, or remanufactured (any of these)

Article 344 covers the use, installation, and construction specifications for _____ conduit and associated fittings.

rigid metal

Service-entrance cables which are not installed underground, where subject to physical damage, shall be protected by _____.

rigid metal conduit, IMC, Schedule 80 PVC conduit (any of these)

Wiring methods permitted for service-entrance conductors include _____.

rigid metal conduit, electrical metallic tubing, PVC conduit (all of these)

The Code requires the installation of an equipment grounding conductor of the wire type in _____.

rigid metal conduit, intermediate metal conduit, or electrical metallic tubing (none of these)

When mounting an enclosure in a finished surface, the enclosure shall be _____ secured to the surface by clamps, anchors, or fittings identified for the application.

rigidly

An outlet box or enclosure mounted on a building or other surface shall be _____.

rigidly and securely fastened in place

A ground ring encircling the building or structure can be used as a grounding electrode when the _____.

ring is in direct contact with the earth, ring consists of at least 20 ft of bare copper conductor, and bare copper conductor is not smaller than 2 AWG (all of these)

Bends in FMC _____ between pull points.

shall not exceed 360 degrees

Wiring shall be installed so that the completed system will be free from _____________, other than as required or permitted elsewhere in the Code.

short circuits, ground faults, and connections to the earth (all of these)

A circuit breaker with a _____ rating, such as 120/240V or 277/480V can be used on a solidly grounded circuit where the nominal voltage of any conductor to ground does not exceed the lower of the two values, and the nominal voltage between any two conductors does not exceed the higher value.

slash

In dwelling units, when determining the spacing of receptacle outlets, _____ on exterior walls shall not be considered wall space.

sliding panels

Electrical equipment with a metal or nonmetallic enclosure listed for use within an air-handling space and having low _____ properties, and associated wiring material suitable for the ambient temperature can be installed within an air-handling space (plenum).

smoke and heat release

All 125V through 250V receptacles located outdoors of dwelling units and supplied by single-phase branch circuits rated 150V or less to ground shall have GFCI protection for personnel except where receptacles that are not readily accessible and are supplied by a branch circuit dedicated to electric ____________ equipment shall be permitted to be installed in accordance with 426.28 or 427.22, as applicable.

snow-melting, de-icing, or pipeline and vessel heating (any of these)

There are four principal determinants of conductor operating temperature, one of which is _____ generated internally in the conductor as the result of load current flow, including fundamental and harmonic currents.

heat

Tightening torque values for terminal connections shall be as indicated on equipment or in installed instructions provided by the manufacturer. An approved means shall be used to achieve the _______________ torque value.

indicated

indoor damp and wet locations, locker rooms with associated showering facilities, garages, service bays, and similar areas other than vehicle exhibition halls and showrooms (all of these)

Cable tray systems shall not be used _____.

in hoistways or where subject to severe physical damage

A multioutlet assembly shall not be installed _____.

in hoistways, where subject to severe physical damage, or where subject to corrosive vapors (all of these)

All conductors of the same circuit shall be _____, unless otherwise specifically permitted in the Code.

in the same raceway or cable or be in close proximity in the same trench

The purpose of having all parallel conductor sets installed in metal wireways within the same group, is to prevent current imbalance in the paralleled conductors due to _____.

inductive reactance

In all occupancies for attics and underfloor spaces, utility rooms, and basements where a lighting outlet is installed for equipment requiring service, the lighting outlet shall be _____.

installed at or near the equipment

Raceways shall be _____ between outlet, junction, or splicing points prior to the installation of conductors.

installed complete

The NEC requires that electrical equipment shall be ___________________.

installed in a neat and workmanlike manner

All switchboards, switchgear, panelboards, and motor control centers shall be located in dedicated spaces and protected from damage, and outdoor installations shall be _____.

installed in identified enclosures, protected from accidental contact by unauthorized personnel or by vehicular traffic, and protected from accidental spillage or leakage from piping systems (all of these)

Illumination shall be provided for all working spaces about service equipment, switchboards, switchgear, panelboards, or motor control centers _____.

installed indoors

GFCI protection shall be provided for all 15A and 20A, 125V, single-phase receptacles _______________________________ in dwelling unit kitchens.

installed to serve the countertop surfaces and within 6 ft. from the top inside edge of the bowl of the sink

The receptacle grounding terminal of an isolated ground receptacle shall be connected to a(an) _____ equipment grounding conductor run with the circuit conductors.

insulated

Concrete-encased grounding electrodes that are installed where the concrete is installed with _____ is not considered to be in direct contact with the earth.

insulation, vapor barriers, or films (any of these)

Where it is unlikely that two or more noncoincident loads will be in use simultaneously, only the _____ the loads used at one time is required to be used in computing the total load to a feeder.

largest of

For raceways terminating at a cable tray, a(an) _____ cable tray clamp or adapter shall be used to securely fasten the raceway to the cable tray system.

listed

Grommets or bushings for the protection of Type NM cable installed through or parallel to framing members shall be _____ for the purpose.

listed

Meter sockets supplied by and under the exclusive control of an electric utility shall not be required to be _____.

listed

Receptacle outlet assemblies _____ for use in countertops or work surfaces are permitted to be installed in countertops or work surfaces.

listed

Receptacle yokes designed and _____ as self-grounding can, in conjunction with the supporting screws, establish the equipment bonding between the device yoke and a flush-type box.

listed

Type AC cable and associated fittings shall be _____.

listed

Type MC Cable _____ for direct burial or concrete encasement shall be permitted under a building without installation in a raceway in accordance with 330.10(A)(5).

listed

Type NM cable and associated fittings shall be _____.

listed

Type UF cable and associated fittings shall be _____.

listed

Types SE and USE cables and associated fittings shall be _____.

listed

Where Type NM cable passes through factory or field openings in metal members, it shall be protected by _____ bushings or _____ grommets that cover metal edges.

listed

Service metal raceways and metal-clad cables are considered effectively bonded when using threadless couplings and connectors that are _____.

made up tight

Metal raceways, cable armor, and other metal enclosures shall be _____ joined together into a continuous electric conductor so as to provide effective electrical continuity.

metallically

A(An) _____ conductor that carries only the unbalanced current from other conductors of the same circuit shall not be required to be counted when applying the provisions of 310.15(C)(1).

neutral

A listed expansion/deflection fitting or other approved means shall be used where a raceway crosses a _____ intended for expansion, contraction or deflection used in buildings, bridges, parking garages, or other structures.

structural joint

In an area served by a separately derived system, the _____ shall be connected to the grounded conductor of the separately derived system

structural steel and metal piping

EMT shall not be used where _____.

subject to severe physical damage or used for the support of luminaires or other equipment except conduit bodies no larger than the largest trade size of the tubing

Electrical installations in hollow spaces, vertical shafts, and ventilation or air-handling ducts shall be made so that the possible spread of fire or products of combustion will not be _____.

substantially increased

Service-drop conductors shall have _____.

sufficient ampacity to carry the load and adequate mechanical strength

Only wiring methods recognized as __________________ are included in this Code.

suitable

Type NM cable on a wall of an unfinished basement installed in a listed raceway shall have a _____ installed at the point where the cable enters the raceway.

suitable insulating bushing or adapter

ENT shall not be used where exposed to the direct rays of the sun, unless identified as _____.

sunlight resistant

Wiring methods installed behind panels that allow access shall be _____ according to their applicable articles.

supported

The wiring space within enclosures for _____ and overcurrent devices shall be permitted for other wiring and equipment subject to limitations for specific equipment in accordance with Article 312.

switches

The metal water piping system(s) installed in or attached to a building or structure [250.104(A)(3)] shall be bonded to _____.

the building or structure disconnecting means enclosure where located at the building or structure, the equipment grounding conductor run with the supply conductors, and one or more grounding electrodes used (any of these)

Screws used for the purpose of attaching covers or other equipment to the box shall be either machine screws matching the thread gauge and size that is integral to the box or be in accordance with the manufacturer

true

Each disconnecting means shall be legibly marked to indicate its purpose unless located and arranged so ______________.

the purpose is evident

Section 300.22(C) applies to spaces not specifically fabricated for environmental air-handling purposes but used for air-handling purposes such as the space over a hung ceiling.

true

Surface extensions shall be made by mounting and mechanically securing an extension ring over the box, unless otherwise permitted.

true

The armor of Type AC cable is recognized by the NEC as an equipment grounding conductor.

true

The conductors described in 310.4 shall be permitted for use in any of the wiring methods covered in Chapter 3 and as specified in their respective tables or as permitted elsewhere in this Code.

true

The grounded conductor of each separately derived system shall be bonded to the nearest available point of the metal water piping system(s) in the area served by each separately derived system and each bonding jumper shall be sized in accordance with Table 250.102(C)(1) based on the largest ungrounded conductor of the separately derived system.

true

The metal structural frame of a building shall be permitted to be used as a conductor to interconnect electrodes that are part of the grounding electrode system, or as a grounding electrode conductor. Hold-down bolts securing the structural steel column that are connected to a concrete-encased electrode that complies with 250.52(A)(3) and is located in the support footing or foundation shall be permitted to connect the metal structural frame of a building or structure to the concrete-encased grounding electrode.

true

Trade size 1 IMC run straight with threaded couplings shall be supported at intervals not exceeding 12 ft.

true

Two or more common grounding electrodes that are bonded together shall be considered as a single grounding electrode system in this sense.

true

Type IMC conduit shall be permitted to be installed where subject to severe physical damage.

true

Type NM cable shall closely follow the surface of the building finish or running boards when run exposed.

true

Type RMC conduit shall be permitted to be installed where subject to severe physical damage.

true

Type SE cable can be used for interior wiring as long as it complies with the installation requirements of Part II of Article 334, excluding 334.80.

true

Type USE cable used for service laterals shall be permitted to emerge from the ground if terminated in an enclosure at an outside location and protected in accordance with 300.5(D).

true

Unless part of a suitable Chapter 3 cable wiring method, equipment grounding conductors of bare or covered copper-clad aluminum, shall not be installed where subject to corrosive conditions or be installed in direct contact with concrete, masonry, or the earth.

true

When IMC is cut in the field, reaming is required to remove the burrs and rough edges.

true

When a building is supplied with a fire sprinkler system, ENT can be installed above any suspended ceiling.

true

Where equipment, other than service equipment, requires dedicated equipment space as specified in 110.26(E), the required receptacle outlet shall be located within _____ the electrical equipment.

the same room or area as

The requirement for maintaining a 3-foot vertical clearance from the edge of the roof shall not apply to the final feeder conductor span where the conductors are attached to _____.

the side of a building

The requirement to maintain a 3-ft vertical clearance from the edge of a roof does not apply to the final conductor span where the service drop is attached to _____.

the side of a building

Where the resistance-to-ground of 25 ohms or less is not achieved for a single rod electrode, _____.

the single rod electrode shall be supplemented by one additional electrode

If the source of a separately derived system and the first disconnecting means are located in separate enclosures, a supply-side bonding jumper of the wire type shall comply with 250.102(C), based on _____.

the size of the derived ungrounded conductors

Ungrounded alternating-current systems from 50V to less than 1,000V shall be legibly marked \"Caution: Ungrounded System - Operating _____ Volts Between Conductors\" at _____ of the system, with sufficient durability to withstand the environment involved.

the source or the first disconnecting means

Cut ends of FMC shall be trimmed or otherwise finished to remove rough edges, except where fittings _____.

thread into the convulsions

All cut ends of LFMC conduit shall be _____ inside and outside to remove rough edges.

trimmed

A box is not required where conductors or cables in cable tray transition to a raceway wiring method from a cable tray.

true

A box or conduit body shall not be required for conductors in handhole enclosures, except where connected to electrical equipment.

true

A box or conduit body shall not be required for splices and taps in direct-buried conductors and cables as long as the splice is made with a splicing device that is identified for the purpose.

true

A box or conduit body shall not be required where cables enter or exit from conduit or tubing that is used to provide cable support or protection against physical damage.

true

A grounded circuit conductor is permitted to ground noncurrent-carrying metal parts of equipment, raceways, and other enclosures on the supply side or within the enclosure of the ac service disconnecting means.

true

A grounding electrode conductor shall be permitted to be run to any convenient grounding electrode available in the grounding electrode system where the other electrode(s), if any, is connected by bonding jumpers that are installed in accordance with 250.53(C).

true

A surface metal raceway is a metal raceway that is intended to be mounted to the surface of a structure, with associated couplings, connectors, boxes, and fittings for the installation of electrical conductors.

true

Boxes, conduit bodies, and fittings installed in wet locations shall be listed for use in wet locations.

true

Bushings or adapters shall be provided at ENT terminations to protect the conductors from abrasion, unless the box, fitting, or enclosure design provides equivalent protection.

true

Cable trays shall be supported at intervals in accordance with the installation instructions.

true

Conduit bodies that are durably and legibly marked by the manufacturer with their volume can contain splices, taps, or devices.

true

Direct-buried conductors or cables can be spliced or tapped without the use of splice boxes when the splice or tap is made in accordance with 110.14(B).

true

ENT is not permitted in hazardous (classified) locations, unless permitted in other articles of the Code.

true

ENT shall be installed as a complete system in accordance with 300.18 and shall be securely fastened in place by an approved means and supported in accordance with 362.30(A) and (B).

true

Each current-carrying conductor of a paralleled set of conductors shall be counted as a current-carrying conductor for the purpose of applying the adjustment factors of 310.15(C)(1)).

true

Electrical wiring within the cavity of a fire-rated floor-ceiling or roof-ceiling assembly shall not be supported by the ceiling assembly or ceiling support wires.

true

Equipment grounding conductors for feeder taps are not required to be larger than the tap conductors.

true

Equipment grounding conductors of the wire type shall not be required to be larger than the circuit conductors.

true

Exothermic or irreversible compression connections, together with the mechanical means used to attach to fireproofed structural metal, shall not be required to be accessible.

true

Grounding electrode conductors of the wire type shall be _____.

solid, stranded, insulated or bare (any of these)

In accordance with Article 300, a(an) _____ is considered a plenum space.

space over a hung ceiling used for environmental air-handling purposes

Working space shall not be used for _____.

storage

A circuit breaker with a _____ voltage rating, such as 240V or 480V, can be used where the nominal voltage between any two conductors does not exceed the circuit breaker voltage rating.

straight

A cable tray is a unit or assembly of units or sections and associated fittings forming a _____ system used to securely fasten or support cables and raceways.

structural

The 3 VA per sq ft general lighting load for dwelling units does not include _____.

unused or unfinished spaces not adaptable for future use

Listed FMC and LFMC is permitted as an equipment grounding conductor at lengths _____ ft.

up to 6

Service-entrance and overhead service conductors shall be arranged so that _____ will not enter the service raceway or equipment.

water

Type MC cable provides an effective ground-fault current path and is recognized by the NEC as an equipment grounding conductor _____.

when it contains an insulated or uninsulated equipment grounding conductor in compliance with 250.118(1)

Where a metal underground water pipe is used as a grounding electrode, the continuity of the grounding path or the bonding connection to interior piping shall not rely on _____ and similar equipment.

water meters or filtering devices

When an underground metal water piping system is used as a grounding electrode, bonding shall be provided around insulated joints and around any equipment that is likely to be disconnected for repairs or replacement.

true

When determining the number of current-carrying conductors, a grounding or bonding conductor shall not be counted when applying the provisions of 310.15(C)(1).

true

When installing auxiliary electrodes, the earth shall not be used as an effective ground-fault current path

true

Where ENT is the wiring method and equipment grounding is required, a separate equipment grounding conductor shall be installed in the raceway.

true

Where an intermediate metal conduit enters a box, fitting, or other enclosure, a bushing shall be provided to protect all wires regardless of size from abrasion unless the box, fitting, or enclosure is designed to provide such protection.

true

Where approved, rigid metal conduit, (RMC), shall not be required to be securely fastened within 3 ft of the service head for above-the-roof termination of a mast.

true

Where conductors in parallel are run in separate raceways, the raceways shall have the same electrical characteristics.

true

Where one or more internal cable clamps are present in the box, a single volume allowance in accordance with Table 314.16(B) shall be made based on the largest conductor present in the box.

true

Wiring methods and equipment installed behind suspended-ceiling panels shall be arranged and secured to allow access to the electrical equipment.

true

A listed exposed work cover can be the grounding and bonding means when the device is attached to the cover with at least _____ permanent fastener(s) and the cover mounting holes are located on a non-raised portion of the cover.

two

Where Type NM cable is run at angles with joists in unfinished basements and crawl spaces, it is permissible to secure cables not smaller than _____conductors directly to the lower edges of the joist.

two, 6 AWG or three, 8 AWG

The supply-side bonding jumper on the supply side of services shall be sized according to the _____.

ungrounded supply conductor size

Cabinets, cutout boxes, and meter socket enclosures installed in wet locations shall be _____.

weatherproof

The interior of underground raceways shall be considered a _____ location.

wet

Where ungrounded supply conductors are paralleled in two or more raceways or cables, the bonding jumper for each raceway or cable shall be based on the size of the _____ in each raceway or cable.

ungrounded supply conductors

Where raceways are installed in wet locations above grade, the interior of these raceways shall be considered a _____ location.

wet

Conductors, splices, or terminations in a handhole enclosure shall be listed as suitable for _____.

wet locations

_____ is an unthreaded thinwall metallic raceway of circular cross section designed for the routing and physical protection of electrical conductors and cables when joined together with listed fittings.

EMT

_____ is a raceway of circular cross section made of a helically wound, formed, interlocked metal strip.

FMC

Type MC cable shall be permitted for _____

branch circuits, feeders, services (any of these)

Liquidtight flexible metal conduit shall be securely fastened by a means approved by the authority having jurisdiction within _____ of termination.

1 ft

The use, installation, and construction specifications of metal-clad cable, Type MC are covered within Article _____.

330

PVC conduit shall be securely fastened within _____ in. of each box.

When Type AC cable is run across the top of a floor joist in an attic without permanent ladders or stairs, guard strips within _____ ft of the scuttle hole or attic entrance shall protect the cable.

Where Type LFNC conduit is installed in lengths exceeding _____ ft, the conduit shall be securely fastened at intervals not exceeding 3 ft and within 12 in. on each side of every outlet box, junction box, cabinet, or fitting.

Securing or supporting of LFNC is not required where installed in lengths not exceeding _____ from the last point where the raceway is securely fastened for connections within an accessible ceiling to a luminaire(s) or other equipment.

6 ft

Type AC cable installed in thermal insulation shall have conductors that are rated at 90°C. The ampacity of the cable in this application shall not exceed that of a _____ rated conductor.

60°C

The number of conductors permitted in PVC conduit shall not exceed the percentage fill specified in _____.

Chapter 9, Table 1

PVC conduit is permitted in locations subject to severe corrosive influences and where subject to chemicals for which the materials are specifically _____.

approved

Type MC cable shall be listed and fittings used for connecting Type MC cable to boxes, cabinets, or other equipment shall _____.

be listed and identified for such use

Extreme cold can cause some types of nonmetallic conduits to become _____ and therefore more susceptible to damage from physical contact.

brittle

Exposed runs of cable, except as provided in 300.11(A), shall closely follow the surface of the _____.

building finish, running boards, the underside of joists (any of these)

The use of EMT shall be permitted for both exposed and concealed work in _____.

concrete, in direct contact with the earth, or in areas subject to severe corrosive influences where installed in accordance with 358.10(B), dry, damp, and wet locations, and any hazardous (classified) location as permitted by other articles in this Code (all of these)

LFNC shall be permitted for _____.

direct burial where listed and marked for the purpose, exposed work, and outdoors where listed and marked for this purpose (all of these)

When LFMC is used to connect equipment where flexibility is necessary to minimize the transmission of vibration from equipment or for equipment requiring movement after installation, a(an) _____ conductor shall be installed.

equipment grounding

When LFNC is used, and equipment grounding is required, a separate _____ shall be installed in the conduit.

equipment grounding condutor

Type MC cable can be unsupported and unsecured where the cable is _____.

fished between access points through concealed spaces in finished buildings or structures

The radius of the curve of the inner edge of any bend shall not be less than _____ for Type AC cable.

five times the diameter of the cable

Where equipment grounding is required, a separate equipment grounding conductor shall be installed in the Type PVC conduit except where the _____ is used to ground equipment as permitted in 250.142.

grounded conductor

Armored cable shall not be installed _____.

in damp or wet locations, where subject to physical damage, where exposed to corrosive conditions (all of these)

PVC conduit shall not be used _____, unless specifically permitted.

in hazardous (classified) locations, for the support of luminaires or other equipment, where subject to physical damage unless identified for such use (all of these)

FMC shall not be installed _____.

in wet locations, embedded in poured concrete, or where subject to physical damage (all of these)

Type MC cable shall be supported and secured by staples; cable ties _____ for securement and support; straps, hangers, or similar fittings; or other approved means designed and installed so as not to damage the cable.

listed and identified

Where used to securely fasten LFMC, cable ties shall be _____ for securement and support.

listed and identified

Galvanized steel and stainless steel EMT, elbows, couplings, and fittings can be installed in concrete, in direct contact with the earth, or in areas subject to severe corrosive influences where _____.

protected by corrosion protection

Bends made in interlocked or corrugated sheath Type MC cable shall have a radius of at least _____ times the external diameter of the metallic sheath.

seven

Liquidtight nonmetallic flexible conduit is not permitted to be used where _____.

subject to physical damage, ambient temperatures exceed its listing, or in lengths greater than 6 ft unless approved (all of these)

Exposed runs of Type AC cable can be installed on the underside of joists where supported at each joist and located so it is not subject to physical damage.

true

FMC to a luminaire or electrical equipment within an accessible ceiling is permitted to be unsupported for not more than 6 ft from the last point where the raceway is securely fastened, including securement and support by listed FMC fittings.

true

PVC conduit shall be permitted for exposed work where subject to physical damage if identified for such use.

true

The cut ends of PVC conduit shall be trimmed to remove the burrs and rough edges.

true

Type AC cable installed through, or parallel to, framing members shall be protected against physical damage from penetration by screws or nails.

true

Type AC cable outer armor is permitted to act as an equipment grounding conductor.

true

Type MC cable installed through, or parallel to, framing members shall be protected against physical damage from penetration by screws or nails by 1 1/4 in. separation or protected by a suitable metal plate.

true

Type UF cable is permitted to be used for inside wiring.

true

Type UF cable shall not be used where subject to physical damage.

true

Where a PVC conduit enters a box, fitting, or other enclosure, a bushing or adapter shall be provided to protect the wire from abrasion unless the box, fitting, or enclosure design provides equivalent protection.

true

Nonconductive optical fiber cable contains no metallic members and no other _________ materials. a) electrically conductive b) inductive c) synthetic d) insulating

Where one or more equipment grounding conductors enter a box, _____ allowance in accordance with Table 314.16(B) shall be made based on the largest equipment grounding conductor.

a 1/4 volume

When calculations in Article 220 result in a fraction of an ampere that is less than _____, such fractions can be dropped.

0.50

A meeting room measuring 12 ft x 18 ft requires _____ floor receptacle outlet(s).

A cable, raceway, or box installed under metal-corrugated sheet roof decking shall be supported so the top of the cable, raceway, or box is not less than _____ from the lowest surface of the roof decking to the top of the cable, raceway, or box.

1 1/2 in.

Listed FMC can be used as the equipment grounding conductor if the conduit does not exceed trade size _____.

1 1/4

Each meeting room of not more than _____ sq ft in other than dwelling units shall have outlets for nonlocking-type, 125V, 15A or 20A receptacles installed in accordance with 210.65(B).

1,000

Ground-fault protection of equipment shall be provided for solidly grounded wye electrical services of more than 150 volts-to-ground, but not exceeding 1,000V phase-to-phase for each service disconnecting means rated _____ or more.

1,000A

Sign and outline lighting outlets are to be calculated at a minimum of _____ VA for each required branch circuit specified in 600.5(A).

1,200

For large equipment that contains service disconnecting means installed in accordance with 230.71 where the combined ampere rating is _____ or more and over 6 ft wide, there shall be one entrance to and egress from the required working space not less than 24 in. wide and 6 1/2 ft high at each end of the working space

1,200A

In other than dwelling units, in addition to the requirements for field or factory marking of equipment to warn qualified persons of potential electric arc-flash hazards, a permanent label shall be field or factory applied to service equipment rated _____________ or more.

1,200A

Sectioned equipment grounding conductors smaller than _____ AWG shall be permitted in multiconductor cables, if the combined circular mil area of the sectioned equipment grounding conductors in each cable complies with 250.122.

1/0

Where service-entrance conductors are installed in parallel in two or more raceways or cables, the size of the grounded conductor in each raceway or cable shall be based on the total circular mil area of the parallel ungrounded service-entrance conductors in the raceway or cable, sized in accordance with 250.24(C)(1), but not smaller than _____ AWG.

1/0

In general, the minimum size conductor permitted for use in parallel installations is _____.

1/0 AWG

Service conductors are parallel in three separate metal raceways. The ungrounded conductors in each raceway are 600 kcmil per phase. Determine the copper supply-side bonding jumper size for each service raceway.

1/0 AWG

When sizing grounded conductors for parallel raceways installed for a separately derived ac system and the system bonding jumper is not located at the source, they shall also be installed in parallel and not smaller than _____.

1/0 AWG

Where nails or screws are likely to penetrate nonmetallic-sheathed cable or ENT installed through metal framing members, a steel sleeve, steel plate, or steel clip not less than _____ in. in thickness shall be used to protect the cable or tubing.

1/16

Expansion fittings for PVC conduit shall be provided to compensate for thermal expansion and contraction where the length change, in accordance with Table 352.44, is expected to be _____ in. or greater in a straight run between securely mounted items such as boxes, cabinets, elbows, or other conduit terminations.

1/4

Grounding electrodes of bare or electrically conductive coated iron or steel plates shall be at least _____ in. thick.

1/4

In installations within or behind noncombustible walls or ceilings, the front edge of a box, plaster ring, extension ring, or listed extender employing a flush-type cover, shall be set back not more than _____ in. from the finished surface.

1/4

Bonding jumper(s) from grounding electrode(s) shall be permitted to be connected to an aluminum or copper busbar not less than _____ and of sufficient length to accommodate the number of terminations necessary for the installation in accordance with 250.64(F).

1/4 in. thick x 2 in. wide

Noncombustible surfaces that are broken or incomplete around boxes employing a flush-type cover or faceplate shall be repaired so there will be no gaps or open spaces larger than _____ in. at the edge of the box.

1/8

One or more metal in-ground support structure(s) in direct contact with the earth vertically for _____ ft or more, with or without concrete encasement is permitted to be a grounding electrode in accordance with 250.52.

Overhead service conductors shall have a horizontal clearance of not less than _____ ft from a pool.

Overhead service conductors shall have a minimum clearance from final grade of _____ ft above areas or sidewalks accessible only to pedestrians, measured from final grade or other accessible surface where the voltage does not exceed 150 volts-to-ground.

The distance between horizontal supports of metal wireways shall not exceed _____ ft.

The minimum point of attachment of overhead service conductors to a building shall not be less than _____ ft above finished grade.

The point of attachment of overhead premises wiring to a building shall in no case be less than _____ ft above finished grade.

What is the minimum size copper equipment bonding jumper for a 40A rated circuit?

10 AWG

Power distribution blocks shall be permitted in pull and junction boxes over _____ cu in.

100

Ground-fault protection of equipment shall be provided for solidly grounded wye electrical systems of more than 150 volts-to-ground, but not exceeding 1,000V phase-to-phase for each individual device used as a building or structure main disconnecting means rated _____ or more, unless specifically exempted.

1000A

A surge protective device shall not be installed in circuits over _____.

1000V

For a one-family dwelling, the feeder disconnecting means shall have a rating of not less than _____, 3-wire.

100A

For a one-family dwelling, the service disconnecting means shall have a rating of not less than _____, 3-wire.

100A

Where there are no adjustment or correction factors required, the service conductors for a rated service of _____ supplying the entire load associated with an individual dwelling unit, may be sized applying Table 310.12.

100A, 200A, or 400A (all of these)

The maximum rating of a single fixed in place utilization equipment supplied by a 20A multiple outlet branch circuit shall be no greater than _____.

10A

All switchboards, switchgear, panelboards, and motor control centers shall be located in dedicated spaces and protected from damage and the working clearance space for outdoor installations shall include the zone described in _____.

110.26(A)

A meeting room with any floor dimension that is _____ ft or greater in any direction and that has a floor area of at least 215 sq ft shall have at least one floor receptacle outlet.

Direct-buried service conductors that are not encased in concrete and that are buried 18 in. or more below grade shall have their location identified by a warning ribbon placed in the trench at least _____ in. above the underground installation.

Overhead feeder and branch circuit spans of open conductors and open multiconductor cables of not over 1,000V, nominal, shall have a clearance of not less than _____ ft over residential property and driveways.

Overhead feeder conductors shall have a minimum vertical clearance of _____ ft over residential property and driveways, as well as those commercial areas not subject to truck traffic, where the voltage does not exceed 300 volts-to-ground.

Overhead service conductors shall have a minimum vertical clearance of _____ ft from final grade over residential property and driveways, as well as over commercial areas not subject to truck traffic where the voltage does not exceed 300 volts-to-ground.

Receptacle outlets are required for kitchen countertops and work surfaces _____ in. and wider

Receptacle outlets installed below the countertop or work surface in dwelling units, shall be located not more than _____ in. below the countertop or work surface.

Exposed, normally noncurrent-carrying metal parts of cord-and-plug-connected equipment shall be connected to the equipment grounding conductor where operated at over _____ to ground.

150V

A building disconnecting means that supplies only limited loads of a single branch circuit shall have a rating of not less than _____.

15A

For installations that supply only limited loads of a single branch circuit, the service disconnecting means shall have a rating not less than _____.

15A

If a 20A branch circuit supplies multiple receptacles, the receptacles shall have an ampere rating of no less than _____.

15A

Overcurrent protection shall not exceed _____.

15A for 14 AWG copper, 20A for 12 AWG copper, or 30A for 10 AWG copper (all of these)

For other than dwelling occupancies, banks, or office buildings, each receptacle outlet shall be calculated at not less than _____ VA.

180

The standard ampere ratings for fuses include(s) _____.

1A, 6A, and 601A (all of these)

A buried iron or steel plate used as a grounding electrode shall expose not less than _____ sq ft of surface area to exterior soil.

At least one receptacle outlet shall be located within _____ ft of the outer end of a peninsular countertop or work surface.

For other than dwelling units or guest rooms of hotels or motels, the feeder and service calculation for track lighting shall be calculated at 150 VA for every _____ ft of lighting track or fraction thereof unless the track is supplied through a device that limits the current to the track.

In a dwelling unit, a receptacle is required in any space _____ ft or more in width (including space measured around corners) and unbroken along the floor line by doorways and similar openings, fireplaces, and fixed cabinets that do not have countertops or similar work surfaces.

Service conductors shall be considered outside of a building or other structure where installed under not less than _____ in. of concrete beneath a building or other structure.

A bare 4 AWG copper conductor installed horizontally near the bottom or vertically, and within that portion of a concrete foundation or footing that is in direct contact with the earth, can be used as a grounding electrode when the conductor is at least _____ ft in length.

Kitchen and dining room countertop receptacle outlets in dwelling units shall be installed on or above the countertop or work surface, but not more than _____ in. above the countertop or work surface.

Receptacle outlets installed on or above countertop or work surfaces shall be located not more than _____ in. above the countertop or worksurface.

The sum of the cross-sectional areas of all contained conductors and cables at any cross section of a metal wireway shall not exceed _____ percent of the interior cross-sectional area of the wireway.

The total volume occupied by two internal cable clamps, six 12 AWG conductors, and a single-pole switch is _____ cu in.

20.25

The minimum feeder load for show-window lighting is _____ VA per linear foot.

200

The required number of receptacle outlets on fixed walls in meeting rooms shall be determined in accordance with _____.

210.52(A)(1) through (A)(4)

For equipment requiring servicing, GFCI protection shall be provided for the receptacles required by ________________.

210.63

Where equipment operating at 1,000V, nominal, or less to ground and likely to require examination, adjustment, servicing, or maintenance while energized is required by installation instructions or function to be located in a space with limited access, and where equipment is installed above a lay-in ceiling, there shall be an opening not smaller than _____.

22 in. x 22 in.

Article _____ provides requirements for calculating branch-circuit, feeder, and service loads.

220

A receptacle outlet shall be installed at each dwelling unit kitchen wall countertop and work surface space that is 12 in. or wider and receptacle outlets shall be installed so that no point along the wall line is more than _____ in., measured horizontally from a receptacle outlet in that space.

Conductor adjustment factors shall not apply to conductors in raceways having a length not exceeding _____ in.

For large equipment that contains overcurrent devices, switching devices, or control devices, there shall be one entrance to and egress from the required working space not less than ______ in. wide.

What is the minimum cover requirement for direct burial Type UF cable installed outdoors that supplies a 120V, 30A circuit?

24 in.

The general requirements for overcurrent protection and overcurrent protective devices not more than 1,000V, nominal are provided in Article _____.

240

Supply-side bonding jumpers shall be no smaller than the sizes specified in Table _____.

250.102(C)(1)

The bonding jumper used to bond the metal water piping system shall be sized in accordance with Table _____ except as permitted in 250.104(A)(2) and 250.104(A)(3).

250.102(C)(1)

The grounded conductor brought to service equipment shall be routed with the phase conductors and shall not be smaller than specified in Table _____ when the service-entrance conductors are 1,100 kcmil copper and smaller.

250.102(C)(1)

The bonding jumper(s) required for the metal water piping system(s) installed in or attached to a building or structure supplied by a feeder(s) or branch circuit(s) shall be sized in accordance with _____.

250.102(D)

Each tap conductor to a common grounding electrode conductor for multiple separately derived systems shall be sized in accordance with _____, based on the derived ungrounded conductors of the separately derived system it serves.

250.66

The size of the grounding electrode conductor for a building or structure supplied by a feeder shall not be smaller than that identified in _____, based on the largest ungrounded supply conductor.

250.66 k

Overhead feeder and branch circuit clearance from chimneys, radio and television antennas, tanks, and other nonbuilding or nonbridge structures, shall not be less than _____ ft.

Rigid metal conduit (RMC) shall be securely fastened within _____ ft of each outlet box, junction box, device box, cabinet, conduit body, or other conduit termination.

Service conductors installed as unjacketed multiconductor cable shall have a minimum clearance of _____ ft from windows that are designed to be opened, doors, porches, balconies, ladders, stairs, fire escapes, or similar locations.

The minimum working space on a circuit for equipment operating at 120 volts-to-ground, with exposed live parts on one side and no live or grounded parts on the other side of the working space, is _____ ft.

The recommended maximum total voltage drop on branch-circuit conductors is _____ percent.

The vertical clearance of final spans of overhead conductors above or within _____ ft measured horizontally of platforms, projections, or surfaces that will permit personal contact shall be maintained in accordance with 225.18.

The vertical clearance of final spans of overhead service conductors above, or within _____ ft measured horizontally of platforms, projections, or surfaces that will permit personal contact shall be maintained in accordance with 230.24(B).

When the opening to an outlet, junction, or switch point is less than 8 in. in any dimension, each conductor shall be long enough to extend at least _____ in. outside the opening of the enclosure.

Where two dwelling units are supplied by a single feeder and the calculated load under Part III of this article exceeds that for _____ identical units calculated under 220.84, the lesser of the two loads is permitted to be used.

For flexible metal conduit, if flexibility is necessary after installation, unsecured lengths from the last point the raceway is securely fastened shall not exceed _____.

3 ft for trade sizes 1/2 through 1 1/4, 4 ft for trade sizes 1 1/2 through 2, and5 ft for trade sizes 2 1/2 and larger (all of these)

For liquidtight flexible metal conduit, if flexibility is necessary after installation, unsecured lengths from the last point the raceway is securely fastened shall not exceed _____.

3 ft for trade sizes 1/2 through 1 1/4, 4 ft for trade sizes 1 1/2 through 2, or 5 ft for trade sizes 2 1/2 and larger (all of these)

Bonding jumper(s) for the bonding of metal water piping systems shall be sized in accordance with Table 250.102(C)(1) and are not required to be larger than _____ AWG copper or 250 kcmil aluminum or copper-clad aluminum.

3/0

The common grounding electrode conductor installed for multiple separately derived systems shall not be smaller than _____ AWG copper when using a wire-type conductor.

3/0

The largest size grounding electrode conductor required is _____ copper.

3/0 AWG

What size copper grounding electrode conductor is required for a service that has three sets of 600 kcmil copper conductors per phase?

3/0 AWG

The common grounding electrode conductor installed for multiple separately derived systems shall be permitted to be the metal structural frame of the building or structure that complies with 250.68(C)(2) or is connected to the grounding electrode system by a conductor not smaller than _____.

3/0 AWG copper or 250 kcmil aluminum

Where rock bottom is encountered at an angle up to 45 degrees when driving a rod or pipe electrode, the electrode shall be permitted to be buried in a trench _____ deep.

30 in

Service-entrance cables mounted in contact with a building shall be supported at intervals not exceeding _____.

30 in.

When a ground ring is used as a grounding electrode, it shall be installed at a depth below the earth\'s surface of not less than _____.

30 in.

Underground service conductors shall be protected from damage in accordance with _____ including minimum cover requirements.

300.5

A dwelling unit containing two 120V laundry branch circuits has a calculated load of _____ VA for the laundry circuits.

3000

The voltage between conductors in a surface metal raceway shall not exceed _____ unless the metal has a thickness of not less than 0.040 in. nominal.

300V

For installations consisting of not more than two 2-wire branch circuits, the building disconnecting means shall have a rating of not less than _____.

30A

For installations consisting of not more than two 2-wire branch circuits, the service disconnecting means shall have a rating of not less than _____.

30A

Plug fuses of the Edison-base type shall have a maximum rating of _____.

30A

Article _____ covers the installation and construction specifications of cabinets, cutout boxes, and meter socket enclosures.

312

The installation and use of all boxes and conduit bodies used as outlet, device, junction, or pull boxes, depending on their use, and handhole enclosures, are covered in Article _____.

314

Article _____ covers the use, installation, and construction specifications for electrical nonmetallic tubing (ENT) and associated fittings.

362

Cable tray systems, including ladder, ventilated trough, ventilated channel, solid bottom, and other similar structures are covered within Article _____.

392

The term "rainproof" is typically used in conjunction with enclosure type(s) _____.

3R and 3RX

An insulated or covered conductor _____ AWG and larger shall be permitted, at the time of installation, to be permanently identified as an equipment grounding conductor at each end and at every point where the conductor is accessible.

At the time of installation, grounded conductors __________ AWG or larger can be identified by distinctive white or gray markings at their terminations.

Feeder equipment grounding conductors that are insulated or covered _____ AWG and larger, shall be permitted, at the time of installation, to be permanently identified as an equipment grounding conductor at each end and at every point where the conductor is accessible.

In an ac system, if the size of the grounding electrode conductor or bonding jumper connected to a concrete-encased electrode does not extend on to other types of electrodes that require a larger size of conductor, the grounding electrode conductor shall not be required to be larger than _____ AWG copper.

The insulated grounded conductor(s) in a multiconductor cable _____________ AWG or larger, shall be permitted to be re-identified at the time of installation at its terminations.

The minimum working space on a circuit for equipment operating at 750 volts-to-ground, with exposed live parts on one side and grounded parts on the other side of the working space, is _____ ft.

The required working space for access to live parts of equipment operating at 300 volts-to-ground, where there are exposed live parts on both sides of the workspace is _____.

4 ft

Enclosures for switches or overcurrent devices are allowed to have conductors feeding through where the wiring space at any cross section is not filled to more than _____ percent of the cross-sectional area of the space.

Under the optional method for calculating a single-family dwelling service, general loads beyond the initial 10 kVA are assessed at a _____ percent demand factor.

A demand factor of _____ percent applies to a multifamily dwelling with ten units if the optional calculation method is used.

Where rock bottom is encountered, a rod or pipe electrode shall be driven at an angle not to exceed _____ degrees from the vertical.

A dwelling unit containing three 120V small-appliance branch circuits has a calculated load of _____ VA for the small-appliance circuits.

4500

Interior metal water piping that is electrically continuous with a metal underground water pipe electrode and is located not more than _____ ft from the point of entrance to the building shall be permitted to extend the connection to an electrode(s).

PVC conduit trade size 1 1/4 to 2, shall be supported no greater than a maximum of _____ ft between supports.

The radius of the curve of the inner edge of any bend during or after installation of Type NM cable, shall not be less than _____ times the diameter of the cable.

Where fixed multioutlet assemblies are used in other than dwelling units or the guest rooms of hotels or motels, each _____ ft or fraction thereof of each separate and continuous length shall be considered as one outlet of not less than 180 VA where appliances are unlikely to be used simultaneously.

Where framing members do not readily permit fastening, rigid metal conduit, (RMC), may be fastened within _____ ft of each outlet box, junction box, device box, cabinet, conduit body, or other conduit termination.

Grounding electrodes of the rod type shall be at least _____ in. in diameter, unless listed.

5/8

The total rating of utilization equipment fastened in place, other than luminaires, shall not exceed _____ percent of a multiple outlet branch circuit rating.

A circuit breaker having an interrupting current rating of other than _____ shall have its interrupting rating marked on the circuit breaker.

5000A

The load for electric clothes dryers in a dwelling unit shall be _____ or the nameplate rating, whichever is larger, per dryer.

5000W

All outdoor outlets for dwellings, other than those covered in 210.8(A)(3), Ex to (3), that are supplied by single-phase branch circuits rated 150 volts-to-ground or less, ___________, shall have ground-fault circuit-interrupter protection for personnel.

50A or less

A vertically mounted luminaire weighing not more than _____ lb can be supported to a device box or plaster ring with no fewer than two No. 6 or larger screws.

A(An) _____ AWG or larger copper or aluminum grounding electrode conductor exposed to physical damage shall be protected in rigid metal conduit, IMC, Schedule 80 PVC conduit, reinforced thermosetting resin conduit Type XW (RTRC-XW), EMT, or cable armor.

All switchboards, switchgear, panelboards, and motor control centers shall be located in dedicated spaces and protected from damage and, for outdoor installations, the space equal to the width and depth of the equipment and extending from grade to a height of _____ ft above the equipment, shall be dedicated to the electrical installation.

Armored cable used to connect recessed luminaires or equipment within an accessible ceiling can be unsupported and unsecured for lengths up to _____ ft.

Equipment associated with the electrical installation can be located above or below other electrical equipment within their working space when the associated equipment does not extend more than ________ in. from the front of the electrical equipment.

For locations not specifically identified in Table 300.5, a cover depth of _____ in. shall be permitted for pool, spa, and fountain lighting, installed in a nonmetallic raceway, limited to not more than 30V where part of a listed low-voltage lighting system.

Grounding electrode conductors _____ AWG and larger that are not exposed to physical damage can be run along the surface of the building construction without metal covering or protection.

Grounding electrode conductors smaller than _____ AWG shall be protected in rigid metal conduit, IMC, PVC conduit, electrical metallic tubing, or cable armor.

If the grounding electrode conductor or bonding jumper connected to a single or multiple rod, pipe, or plate electrode(s), or any combination thereof, as described in 250.52(A)(5) or (A)(7), does not extend on to other types of electrodes that require a larger size conductor, the grounding electrode conductor shall not be required to be larger than _____ AWG copper wire.

In dwelling units, GFCI protection shall be provided for all 125V through 250V receptacles supplied by single-phase branch circuits rated 150V or less to ground where receptacles are installed within ______________ ft from the top inside edge of the bowl of a sink.

In other than dwelling units, GFCI protection shall be provided for all 125V through 250V receptacles supplied by single-phase branch circuits rated 150V or less to ground, 50A or less, where receptacles are installed within _____ ft from the top inside edge of the bowl of a sink.

Pull boxes or junction boxes with any dimension over _____ ft shall have all conductors cabled or racked in an approved manner.

Receptacles installed below a countertop or work surface shall not be located where the countertop or work surface extends more than _____ in. beyond its support base.

Rigid metal conduit that is directly buried outdoors shall have at least _____ in. of cover.

The minimum height of dedicated equipment space for motor control centers installed indoors is _____ ft above the enclosure, or to the structural ceiling, whichever is lower.

Type MC cable installed horizontally through wooden or metal framing members are considered secured and supported where such support does not exceed _____-ft intervals.

Type MC cable shall be secured at intervals not exceeding _____ ft.

Type UF cable used with a 24V landscape lighting system can have a minimum cover of _____ in.

When applying the general provisions for receptacle spacing to the rooms of a dwelling unit which require receptacles in the wall space, no point measured horizontally along the floor line of any wall space may be more than _____ ft from an outlet.

Where the supplemental electrode is a rod, that portion of the bonding jumper that is the sole connection to the supplemental grounding electrode shall not be required to be larger than _____ AWG copper wire.

At least one receptacle outlet not more than _____ ft above a balcony, deck, or porch shall be installed at each balcony, deck, or porch that is attached to and accessible from a dwelling unit.

6 1/2

For large equipment that contains overcurrent devices, switching devices, or control devices, there shall be one entrance to and egress from the required working space not less than 24 in. wide and _____ ft high at each end of the working space.

6 1/2

Where not routed with circuit conductors as permitted in 250.130(C) and 250.134(A) Exception No. 2, equipment grounding conductors smaller than _____ shall be protected from physical damage by an identified raceway or cable armor.

6 AWG

Circuit breakers and switches containing fuses shall be readily accessible and installed so the center of the grip of the operating handle of the switch or circuit breaker, when in its highest position, is not more than _____ above the floor or working platform.

6 ft 7 in.

Appliance receptacle outlets installed for a specific appliance in a dwelling unit, such as laundry equipment, shall be located within _____ of the intended location of the appliance.

6 ft.

Foyers with an area greater than _____ sq ft shall have a receptacle located in each wall space 3 ft or more in width unbroken by doorways, windows next to doors that extend to the floor, and similar openings.

If cables meeting the requirements in 310.15(C)(1)(d)(1) through (C)(1)(d)(3) with more than 20 current-carrying conductors are installed longer than 24 in. without maintaining spacing, are stacked, or are supported on bridle rings, a _____ percent adjustment factor shall be applied.

Where conductors are installed in raceways or cables exposed to direct sunlight on or above rooftops, a temperature adder of _____ shall be added to the outdoor temperature where the conduits are less than 7/8 in. from the rooftop.

Each feeder disconnect rated 1,000A or more and installed on solidly grounded wye electrical systems of more than 150V to ground, but not exceeding _____ phase-to-phase, shall be provided with ground-fault protection of equipment in accordance with 230.95.

600V

For all other installations, the feeder or branch-circuit disconnecting means shall have a rating of not less than _____.

60A

The ampacity of Type UF cable shall be that of _____ conductors in accordance with 310.14.

60°C

For Types NM and NMC cable, the conductor ampacity used for ambient temperature correction 310.15(B)(1), conductor bundling adjustment 310.15(C)(1), or both, is based on the 90°C conductor insulation rating 310.15(B)(2), provided the final calculated ampacity does not exceed that of a _____ rated conductor.

60ºC

The 90ºC rating shall be permitted to be used for ampacity adjustment and correction calculations, provided the final calculated ampacity does not exceed that of a _____ rated conductor.

60ºC

Where raceways or cables are exposed to direct sunlight on or above rooftops and where the distance above the roof to the bottom of the raceway is less than _____ in., a temperature adder of 60°F shall be added to the outdoor temperature to determine the applicable ambient temperature for application of the correction factors in Table 310.15(B)(1) or Table 310.15(B)(2).

7/8

A feeder or service supplying household electric ranges, wall-mounted ovens, counter-mounted cooking units, and electric dryers, where the maximum unbalanced load has been determined in accordance with Table 220.55 for ranges and Table 220.54 for dryers shall be permitted to have an additional demand factor of _____ percent applied.

Conductors shall have their ampacity determined using the ______ column of Table 310.16 for circuits rated over 100A, or marked for conductors larger than 1 AWG, unless the equipment terminals are lister for use with higher temperature-rated conductors.

For circuits rated 100A or less, when the equipment terminals are listed for use with 75 degrees Celsius conductors, the _________ column of Table 310.16 shall be used to determine the ampacity of THHN conductors.

75 degrees Celsius

A service consisting of 12 AWG service-entrance conductors requires a grounding electrode conductor sized no less than _____ AWG.

In general, where installed in raceways, conductors _____ AWG and larger shall be stranded.

Overhead service conductors installed over roofs shall have a vertical clearance of not less than _____ ft above the roof surface, unless a lesser distance is permitted by an exception.

Rod and pipe grounding electrodes shall not be less than _____ ft in length.

The minimum radius of a field bend on trade size 1 1/4 RMC is _____ in.

Underground copper service conductors shall not be smaller than _____ AWG copper.

When Type NM cable is used with nonmetallic boxes not larger than 2 1/4 x 4 in., securing the cable to the box shall not be required if the cable is fastened within _____ in. of that box.

A rod or pipe electrode shall be installed such that at least _____ of length is in contact with the soil.

8 ft

Where direct-buried conductors and cables emerge from grade, they shall be protected by enclosures or raceways to a point at least _____ above finished grade.

8 ft

Overhead feeder conductors installed over roofs shall have a vertical clearance of not less than _____ above the roof surface, unless otherwise permitted by an exception.

8 ft 6 in.

Where six current-carrying conductors are run in the same conduit or cable, the ampacity of each conductor shall be lowered to _____ percent of its ampacity.

If the circuit\'s overcurrent device exceeds _____, the conductor ampacity shall have a rating not less than the rating of the overcurrent device.

800A

Using the standard load calculation method, the feeder demand factor for five household clothes dryers is _____ percent.

For Types NM and NMC cable, the _____°C rating shall be permitted to be used for ampacity adjustment and correction calculations, provided the final calculated ampacity does not exceed that of a 60°C rated conductor.

Where equipment operating at 1,000V, nominal, or less to ground and likely to require examination, adjustment, servicing, or maintenance while energized is required by installation instructions or function to be located in a space with limited access, all enclosure doors or hinged panels shall be capable of opening a minimum of _____ degrees.

Insulated conductors rated 600V with the letters "HH" in their designation have a _____ insulation rating.

90°C

Chapters 1 through 4 of the NEC apply _____. A: generally to all electrical installations B: only to special occupancies and conditions C: only to special equipment and material D: all of these

Four basic components are needed for a fire to start: a. Fuel, ignition source, oxygen, and chain reaction b. Fuel, moisture, oxygen, and process of combustion c. Inflammable object, extreme heat, oxygen, and chain reaction d. All of the above

Installations supplying _____ power to ships and watercraft in marinas and boatyards are covered by the NEC. A: shore B: primary C: secondary D: auxiliary

Proper lockout/tagout of electrically-powered equipment includes: a. Indicating circuits or pieces of equipment are out-of-service on tag b. Padlocking the switch in the ON position c. Tagging work area d. Turing power off at the equipment

The Code does not cover installations under the exclusive control of an electrical utility such as _____. A: service drops and laterals B: electric utility office buildings C: electric utility warehouses D: electric utility garages

The first step in accomplishing lockout/tagout is: a. Prepare for shutdown b. Apply locks and tags c. Verify Isolation d. Release stored energy

The hazards faced on jobsite that could cause foot injuries include: a. Compression b. Injurious gases c. Dusts or powders d. All of the above

The operation time of most fire extinguishers is: a. 8-10 seconds b. 20-30 seconds c. 40-60 seconds d. 1-2 minutes

To prevent electrical accidents: a. Insulate b. Guard live parts of 30 volt equipment c. Defeat ground deices d. a and b

Understanding how electricity works requires knowledge of: a. Volt = Current x Resistance b. Current = Resistance x Volt c. Resistance = Volt x Current d. Murphy's Law

Garage

A building or portion of a building in which one or more self-propelled vehicles can be kept for use, sale, storage, rental, repair, exhibition, or demonstration purposes. (CMP-1) Informational Note: For commercial garages, repair and stor‐ age, see Article 511

Dwelling, One-Family

A building that consists solely of one dwelling unit. (CMP-1)

Dwelling, Two-Family

A building that consists solely of two dwelling units. (CMP-1)

Dwelling, Multifamily

A building that contains three or more dwelling units. (CMP-1)

Composite Optical Fiber Cable

A cable containing optical fibers and current-carrying electrical conductors. CMP-16

Non-incendive Circuit [as applied to Hazardous (Classified) Locations]

A circuit, other than field wiring, in which any arc or thermal effect produced under intended operating condi‐ tions of the equipment, is not capable, under specified test conditions, of igniting the flammable gas-air, vapor-air, or dust-air mixture. (CMP-14)

Hermetic Refrigerant Motor-Compressor

A combination consisting of a compressor and motor, both of which are enclosed in the same housing, with no external shaft or shaft seals, with the motor operating in the refrigerant. (CMP-11)

Adjustable Speed Drive System

A combination of an adjustable speed drive, its associated motor(s), and auxiliary equipment

Plenum

A compartment or chamber to which one or more air ducts are connected and that forms part of the air distribution system. (CMP-3)

Luminaire

A complete lighting unit consisting of a light source such as a lamp or lamps, together with the parts designed to position the light source and connect it to the power supply. It may also include parts to protect the light source or the ballast or to distribute the light. A lampholder itself is not a luminaire. (CMP-18)

Nonincendive Component [as applied to Hazardous (Classi‐ fied) Locations].

A component having contacts for making or breaking an incendive circuit and the contacting mechanism is constructed so that the component is incapable of igniting the specified flammable gas-air or vapor-air mixture. The housing of a nonincendive component is not intended to exclude the flammable atmosphere or contain an explosion. (CMP-14)

Grounding Electrode

A conducting object through which a direct connection to earth is established. (CMP-5)

Conductor, Insulated

A conductor encased within material of composition and thickness that is recognized by this Code as electrical insulation. CMP-6

Conductor, Covered

A conductor encased within material of composition or thickness that is not recognized by this Code as electrical insulation. CMP-6

Conductor, Bare

A conductor having no covering or electrical insulation whatsoever. CMP-6

Grounding Electrode Conductor

A conductor used to connect the system grounded conductor or the equipment to a ground‐ ing electrode or to a point on the grounding electrode system. (CMP-5)

Receptacle

A contact device installed at the outlet for the connection of an attachment plug, or for the direct connection of electrical utilization equipment designed to mate with the corresponding contact device. A single receptacle is a single contact device with no other contact device on the same yoke or strap; a multiple receptacle is two or more contact devices on the same yoke or strap. (CMP-18) A yoke (also called a strap) is the metal mounting structure for such items as receptacles, switches, switches with pilot lights, and switch/receptacles to name a few.

Cooking Unit, Counter-Mounted

A cooking appliance designed for mounting in or on a counter and consisting of one or more heating elements, internal wiring, and built-in or mountable controls. CMP-2

Coaxial Cable

A cylindrical assembly composed of a conduc‐ tor centered inside a metallic tube or shield, separated by a dielectric material, and usually covered by an insulating jacket. CMP-16

Overcurrent Protective Device, Branch-Circuit

A device capable of providing protection for service, feeder, and branch circuits and equipment over the full range of overcurrents between its rated current and its interrupting rating. Such devices are provided with interrupting ratings appropriate for the intended use but no less than 5000 amperes. (CMP-10)

Switching Device

A device designed to close, open, or both, one or more electrical circuits. (CMP-1) Circuit Breaker. A switching device capable of making, carrying, and interrupting currents under normal circuit conditions, and also of making, carrying for a specified time, and interrupting currents under specified abnormal circuit conditions, such as those of short circuit. Cutout. An assembly of a fuse support with either a fuseholder, fuse carrier, or disconnecting blade. The fuseholder or fuse carrier may include a conducting element (fuse link) or may act as the disconnecting blade by the inclusion of a nonfusible member. Disconnecting Means. A device, group of devices, or other means whereby the conductors of a circuit can be disconnected from their source of supply. Disconnecting (or Isolating) Switch (Disconnector, Isolator). A mechanical switching device used for isolating a circuit or equipment from a source of power. Interrupter Switch. A switch capable of making, carrying, and interrupting specified currents. Oil Cutout (Oil-Filled Cutout). A cutout in which all or part of the fuse support and its fuse link or disconnecting blade is moun‐ ted in oil with complete immersion of the contacts and the fusi‐ ble portion of the conducting element (fuse link) so that arcinterruption by severing of the fuse link or by opening of the contacts will occur under oil. Oil Switch. A switch having contacts that operate under oil (or askarel or other suitable liquid). Regulator Bypass Switch. A specific device or combination of devices designed to bypass a regulator.

Circuit Breaker

A device designed to open and close a circuit by nonautomatic means and to open the circuit automatically on a predetermined overcurrent without damage to itself when properly applied within its rating. CMP-10 Informational Note: The automatic opening means can be integral, direct acting with the circuit breaker, or remote from the circuit breaker.

Ground-Fault Circuit Interrupter (GFCI)

A device intended for the protection of personnel that functions to de-energize a circuit or portion thereof within an established period of time when a current to ground exceeds the values established for a Class A device. (CMP-2) Informational Note: Class A ground-fault circuit interrupters trip when the current to ground is 6 mA or higher and do not trip when the current to ground is less than 4 mA. For further information, see UL 943, Standard for Ground-Fault Circuit Inter‐ rupters.

Overcurrent Protective Device, Supplementary

A device intended to provide limited overcurrent protection for specific applications and utilization equipment such as luminaires and appliances. This limited protection is in addition to the protec‐ tion provided in the required branch circuit by the branchcircuit overcurrent protective device. (CMP-10)

Arc-Fault Circuit Interrupter AFCI

A device intended to provide protection from the effects of arc faults by recognizing characteristics unique to arcing and by functioning to deenergize the circuit when an arc fault is detected

Controller

A device or group of devices that serves to govern, in some predetermined manner, the electric power delivered to the apparatus to which it is connected. CMP-1

Connector, Pressure. Solderless

A device that establishes a connection between two or more conductors or between one or more conductors and a terminal by means of mechanical pressure and without the use of solder. CMP-1

Intersystem Bonding Termination

A device that provides a means for connecting intersystem bonding conductors for communications systems to the grounding electrode system. (CMP-16)

Attachment Plug, Plug Cap, Plug

A device that, by insertion in a receptacle, establishes a connection between the conductors of the attached flexible cord and the conductors connected permanently to the receptacle. CMP-18

Attachment Fitting

A device that, by insertion into a locking support and mounting receptacle, establishes a connection between the conductors of the attached utilization equipment and the branch-circuit conductors connected to the locking support and mounting receptacle.

Disconnecting Means

A device, or group of devices, or other means by which the conductors of a circuit can be disconnec‐ ted from their source of supply. CMP-1

Control Drawing [as applied to Hazardous. Classified, Loca‐ tions

A drawing or other document provided by the manufac‐ turer of the intrinsically safe or associated apparatus, or of the nonincendive field wiring apparatus or associated nonincen‐ dive field wiring apparatus, that details the allowed intercon‐ nections between the intrinsically safe and associated apparatus or between the nonincendive field wiring apparatus or associ‐ ated nonincendive field wiring apparatus. CMP-14

Non-conductive Optical Fiber Cable

A factory assembly of one or more optical fibers having an overall covering and containing no electrically conductive materials. (CMP-16)

Conductive Optical Fiber Cable

A factory assembly of one or more optical fibers having an overall covering and containing non-current-carrying conductive member(s) such as metallic strength member(s), metallic vapor barrier(s), metallic armor or metallic sheath. CMP-16

Optical Fiber Cable

A factory assembly or field assembly of one or more optical fibers having an overall covering. (CMP-16) Informational Note: A field-assembled optical fiber cable is an assembly of one or more optical fibers within a jacket. The jacket, without optical fibers, is installed in a manner similar to conduit or raceway. Once the jacket is installed, the optical fibers are inserted into the jacket, completing the cable assem‐ bly.

Switchboard

A large single panel, frame, or assembly of panels on which are mounted on the face, back, or both, switches, overcurrent and other protective devices, buses, and usually instruments. These assemblies are generally accessible from the rear as well as from the front and are not intended to be instal‐ led in cabinets. (CMP-9)

Continuous Load

A load where the maximum current is expected to continue for 3 hours or more. CMP-2

Nonlinear Load

A load where the wave shape of the steadystate current does not follow the wave shape of the applied volt‐ age. (CMP-1) Informational Note: Electronic equipment, electronic/electricdischarge lighting, adjustable-speed drive systems, and similar equipment may be nonlinear loads.

Location, Dry

A location not normally subject to dampness or wetness. A location classified as dry may be temporarily subject to dampness or wetness, as in the case of a building under construction. (CMP-1)

Switch, Bypass Isolation

A manually operated device used in conjunction with a transfer switch to provide a means of directly connecting load conductors to a power source and of disconnecting the transfer switch. (CMP-13)

Lighting Track (Track Lighting)

A manufactured assembly designed to support and energize luminaires that are capable of being readily repositioned on the track. Its length can be altered by the addition or subtraction of sections of track. (CMP-18)

Uninterruptible Power Supply

A power supply used to provide alternating current power to a load for some period of time in the event of a power failure. (CMP-13) Informational Note: In addition, it may provide a more constant voltage and frequency supply to the load, reducing the effects of voltage and frequency variations.

Ungrounded System

A power-supply system not connected to the earth (ground). Note: An electrical system can be ungrounded, but the enclosure must still be connected to the Earth.

Combustible Gas Detection System. as applied to Hazardous Classified Locations

A protection technique utilizing stationary gas detectors in industrial establishments. CMP-14

Thermal Protector (as applied to motors).

A protective device for assembly as an integral part of a motor or motorcompressor that, when properly applied, protects the motor against dangerous overheating due to overload and failure to start. (CMP-11) Informational Note: The thermal protector may consist of one or more sensing elements integral with the motor or motorcompressor and an external control device.

Surge Arrester

A protective device for limiting surge voltages by discharging or bypassing surge current; it also prevents continued flow of follow current while remaining capable of repeating these functions. (CMP-5)

Surge-Protective Device (SPD)

A protective device for limiting transient voltages by diverting or limiting surge current; it also prevents continued flow of follow current while remaining capable of repeating these functions and is designated as follows: Type 1: Permanently connected SPDs intended for installation between the secondary of the service transformer and the line side of the service disconnect overcurrent device. Type 2: Permanently connected SPDs intended for installation on the load side of the service disconnect overcurrent device, including SPDs located at the branch panel. Type 3: Point of utilization SPDs. Type 4: Component SPDs, including discrete components, as well as assemblies. (CMP-5) Informational Note: For further information on Type 1, Type 2, Type 3, and Type 4 SPDs, see UL 1449, Standard for Surge Protec‐ tive Devices.

Instantaneous Trip (as applied to circuit breakers)

A qualifying term indicating that no delay is purposely introduced in the tripping action of the circuit breaker.

Adjustable (as applied to circuit breakers)

A qualifying term indicating that the circuit breaker can be set to trip at various values of current, time, or both, within a predetermined range.

Nonadjustable (as applied to circuit breakers)

A qualifying term indicating that the circuit breaker does not have any adjustment to alter the value of the current at which it will trip or the time required for its operation.

Inverse Time (as applied to circuit breakers)

A qualifying term indicating that there is purposely introduced a delay in the tripping action of the circuit breaker, which delay decreases as the magnitude of the current increases.

Supply-Side Bonding Conductor or Jumper

A reliable conductor to ensure the required electrical conductivity between metal parts required to be electrically connected. CMP-5

Habitable Room

A room in a building for living, sleeping, eating, or cooking, but excluding bathrooms, toilet rooms, closets, hallways, storage or utility spaces, and similar areas.

Process Seal [as applied to Hazardous (Classified) Locations].

A seal between electrical systems and flammable or combusti‐ ble process fluids where a failure could allow the migration of process fluids into the premises' wiring system. (CMP-14)

Conduit Body

A separate portion of a conduit or tubing system that provides access through a removable cover(s) to the interior of the system at a junction of two or more sections of the system or at a terminal point of the system. Boxes such as FS and FD or larger cast or sheet metal boxes are not classified as conduit bodies. CMP-9

Cable Routing Assembly

A single channel or connected multiple channels, as well as associated fittings, forming a structural system that is used to support and route communications wires and cables, optical fiber cables, data cables associated with information technology and communications equipment, Class 2, Class 3, and Type PLTC cables, and power-limited fire alarm cables in plenum, riser, and general-purpose applications. CMP-16

Panelboard

A single panel or group of panel units designed for assembly in the form of a single panel, including buses and automatic overcurrent devices, and equipped with or without switches for the control of light, heat, or power circuits; designed to be placed in a cabinet or cutout box placed in or against a wall, partition, or other support; and accessible only from the front. (CMP-9)

Dwelling Unit

A single unit, providing complete and inde‐ pendent living facilities for one or more persons, including permanent provisions for living, sleeping, cooking, and sanita‐ tion. (CMP-2)

Electrical Datum Plane

A specified distance above a water level above which electrical equipment can be installed and electrical connections can be made.

Festoon Lighting

A string of outdoor lights that is suspended between two points. (CMP-18)

Building

A structure that stands alone or that is separated from adjoining structures by fire walls. CMP-1

Multioutlet Assembly

A surface, flush, or freestanding raceway designed to hold conductors and receptacles, assembled in the field or at the factory. (CMP-18)

Switch, General-Use Snap

A switch constructed to be installed in a device box or a box cover.

Switch, Isolating

A switch intended for isolating an electrical circuit from the source of power. It has no interrupting rating, and it is intended to be operated only after the circuit has been opened by some other means. (CMP-9)

Switch, General-Use

A switch intended for use in general distribution and branch circuits. It is rated in amperes, and it is capable of interrupting its rated current at its rated voltage. (CMP-9)

Switch, Motor-Circuit

A switch rated in horsepower that is capable of interrupting the maximum operating overload current of a motor of the same horsepower rating as the switch at the rated voltage. (CMP-11)

Hybrid System

A system comprised of multiple power sources. These power sources could include photovoltaic, wind, microhydro generators, engine-driven generators, and others, but do not include electric power production and distribution network systems. Energy storage systems such as batteries, flywheels, or superconducting magnetic storage equipment do not constitute a power source for the purpose of this defini‐ tion. The energy regenerated by an overhauling (descending) elevator does not constitute a power source for the purpose of this definition. (CMP-4)

Electrical Circuit Protective System

A system consisting of components and materials intended for installation as protec‐ tion for specific electrical wiring systems with respect to the disruption of electrical circuit integrity upon exterior fire expo‐ sure. (CMP-16)

Ground-Fault Protection of Equipment

A system intended to provide protection of equipment from damaging line-toground fault currents by operating to cause a disconnecting means to open all ungrounded conductors of the faulted circuit. This protection is provided at current levels less than those required to protect conductors from damage through the operation of a supply circuit overcurrent device. (CMP-5)

Device

A unit of an electrical system, other than a conductor, that carries or controls electric energy as its principal function. CMP-1

Approved

Acceptable to the authority having jurisdiction

Motor Control Center

An assembly of one or more enclosed sections having a common power bus and principally contain‐ ing motor control units. (CMP-11)

Fitting

An accessory such as a locknut, bushing, or other part of a wiring system that is intended primarily to perform a mechanical rather than an electrical function. (CMP-1)

Guest Room

An accommodation combining living, sleeping, sanitary, and storage facilities within a compartment. (CMP-2)

Guest Suite

An accommodation with two or more contiguous rooms comprising a compartment, with or without doors between such rooms, that provides living, sleeping, sanitary, and storage facilities. (CMP-2)

Laundry Area

An area containing or designed to contain a laundry tray, clothes washer, or clothes dryer.

Bathroom

An area including a basin with one or more of the following: a toilet, a urinal, a tub, a shower, a bidet, or similar plumbing fixtures. CMP-2

Kitchen

An area with a sink and permanent provisions for food preparation and cooking. (CMP-2)

Outline Lighting

An arrangement of incandescent lamps, electric-discharge lighting, or other electrically powered light sources to outline or call attention to certain features such as the shape of a building or the decoration of a window. (CMP-18)

Substation

An assemblage of equipment (e.g., switches, inter‐ rupting devices, circuit breakers, buses, and transformers) through which electric energy is passed for the purpose of distribution, switching, or modifying its characteristics. (CMP-9)

Switchgear

An assembly completely enclosed on all sides and top with sheet metal (except for ventilating openings and inspection windows) and containing primary power circuit switching, interrupting devices, or both, with buses and connections. The assembly may include control and auxiliary devices. Access to the interior of the enclosure is provided by doors, removable covers, or both. (CMP-9) Informational Note: All switchgear subject to NEC requirements is metal enclosed. Switchgear rated below 1000 V or less may be identified as "low-voltage power circuit breaker switchgear." Switchgear rated over 1000 V may be identified as "metalenclosed switchgear" or "metal-clad switchgear." Switchgear is available in non-arc-resistant or arc-resistant constructions

Intrinsically Safe System [as applied to Hazardous (Classified) Locations]

An assembly of interconnected intrinsically safe apparatus, associated apparatus, and interconnecting cables, in that those parts of the system that may be used in hazardous (classified) locations are intrinsically safe circuits. (CMP-14) Informational Note: An intrinsically safe system may include more than one intrinsically safe circuit.

Industrial Control Panel

An assembly of two or more compo‐ nents consisting of one of the following: (1) power circuit components only, such as motor controllers, overload relays, fused disconnect switches, and circuit breakers; (2) control circuit components only, such as push buttons, pilot lights, selector switches, timers, switches, and control relays; (3) a combination of power and control circuit components. These components, with associated wiring and terminals, are moun‐ ted on, or contained within, an enclosure or mounted on a subpanel. The industrial control panel does not include the controlled equipment. (CMP-11)

Multiple Fuse

An assembly of two or more single-pole fuses. (CMP-10)

Switch, Transfer

An automatic or nonautomatic device for transferring one or more load conductor connections from one power source to another. (CMP-13)

Electric Vehicle.

An automotive-type vehicle for on-road use, such as passenger automobiles, buses, trucks, vans, neighborhood electric vehicles, and electric motorcycles, primarily powered by and electric motor. Off-road, self-propelled vehicles, such as industrial trucks, hoist, lifts, golf carts, tractors boats, and airline ground support equipment are not considered electric vehicles.

Interactive System

An electric power production system that is operating in parallel with and capable of delivering energy to an electric primary source supply system. (CMP-4)

Simple Apparatus [as applied to Hazardous (Classified) Loca‐ tions].

An electrical component or combination of compo‐ nents of simple construction with well-defined electrical parameters that does not generate more than 1.5 volts, 100 mA, and 25 mW, or a passive component that does not dissipate more than 1.3 watts and is compatible with the intrinsic safety of the circuit in which it is used. (CMP-14) Informational Note: The following apparatus are examples of simple apparatus: (1) Passive components; for example, switches, junction boxes, resistance temperature devices, and simple semi‐ conductor devices such as LEDs (2) Sources of stored energy consisting of single components in simple circuits with well-defined parameters; for exam‐ ple, capacitors or inductors, whose values are considered when determining the overall safety of the system (3) Sources of generated energy; for example, thermocouples and photocells, that do not generate more than 1.5 volts, 100 mA, and 25 mW

Separately Derived System

An electrical source, other than a service, having no direct connection(s) to circuit conductors of any other electrical source other than those established by grounding and bonding connections. (CMP-5)

Ground-Fault Current Path

An electrically conductive path from the point of a ground fault on a wiring system through normally non-current-carrying conductors, equipment, or the earth to the electrical supply source. (CMP-5) Informational Note: Examples of ground-fault current paths are any combination of equipment grounding conductors, metallic raceways, metallic cable sheaths, electrical equipment, and any other electrically conductive material such as metal, water, and gas piping; steel framing members; stucco mesh; metal ducting; reinforcing steel; shields of communications cables; and the earth itself.

Power Outlet

An enclosed assembly that may include recepta‐ cles, circuit breakers, fuseholders, fused switches, buses, and watt-hour meter mounting means; intended to supply and control power to mobile homes, recreational vehicles, park trailers, or boats or to serve as a means for distributing power required to operate mobile or temporarily installed equipment. (CMP-19)

Raceway

An enclosed channel designed expressly for holding wires, cables, or busbars, with additional functions as permitted in this Code. (CMP-8)

Communications Raceway

An enclosed channel of nonmetal‐ lic materials designed expressly for holding communications wires and cables; optical fiber cables; data cables associated with information technology and communications equipment; Class 2, Class 3, and Type PLTC cables; and power-limited fire alarm cables in plenum, riser, and general-purpose applica‐ tions. CMP-16

Raceway, Communications

An enclosed nonmetallic channel designed for holding communications wires and cables; optical fiber cables; data cables associated with information technology and communications equipment; Class 2, Type PLTC, and power-limited fire alarm cables in plenum spaces, risers, and general-purpose applications.

Cutout Box

An enclosure designed for surface mounting that has swinging doors or covers secured directly to and telescop‐ ing with the walls of the enclosure. CMP-9

Handhole Enclosure

An enclosure for use in underground systems, provided with an open or closed bottom, and sized to allow personnel to reach into, but not enter, for the purpose of installing, operating, or maintaining equipment or wiring or both. (CMP-9)

Cabinet

An enclosure that is designed for either surface mounting or flush mounting and is provided with a frame, mat, or trim in which a swinging door or doors are or can be hung. CMP-9

Effective Ground-Fault Current Path

An intentionally constructed, low-impedance electrically conductive path designed and intended to carry current under ground-fault conditions from the point of a ground fault on a wiring system to the electrical supply source and that facilitates the operation of the overcurrent protective device or ground-fault detectors. (CMP-5)

Interactive Inverter

An inverter intended for use in parallel with an electric utility to supply common loads that may deliver power to the utility. (CMP-13)

Free Air (as applied to conductors)

An open or ventilated environment that allows for heat dissipation and airflow around a conductor.

Field Evaluation Body (FEB)

An organization or part of an organization that performs field evaluations of electrical or other equipment. [790, 2012] (CMP-1)

Authority Having Jurisdiction

An organization, office, or individual responsible for enforcing the requirements of a code or standard, or for approving equipment, materials, an installation, or a procedure. CMP-1, Informational Note: The phrase "authority having jurisdiction," or its acronym AHJ, is used in NFPA documents in a broad manner, since jurisdictions and approval agencies vary, as do their responsibilities. Where public safety is primary, the authority having jurisdiction may be a federal, state, local, or other regional department or individual such as a fire chief; fire marshal; chief of a fire prevention bureau, labor department, or health department; building official; electrical inspector; or others having statutory authority. For insurance purposes, an insurance inspection department, rating bureau, or other insurance company representative may be the authority having juris‐ diction. In many circumstances, the property owner or his or her designated agent assumes the role of the authority having jurisdiction; at government installations, the commanding officer or departmental official may be the authority having jurisdiction

Lighting Outlet

An outlet intended for the direct connection of a lampholder or luminaire. (CMP-18)

Receptacle Outlet

An outlet where one or more receptacles are installed. (CMP-18)

Electronically Actuated Fuse

An overcurrent protective device that generally consists of a control module that provides current sensing, electronically derived time-current character‐ istics, energy to initiate tripping, and an interrupting module that interrupts current when an overcurrent occurs. Electroni‐ cally actuated fuses may or may not operate in a currentlimiting fashion, depending on the type of control selected. (CMP-10)

Electronically Actuated Fuse

An overcurrent protective device that generally consists of a control module that provides current-sensing, electronically derived time-current character‐ istics, energy to initiate tripping, and an interrupting module that interrupts current when an overcurrent occurs. Such fuses may or may not operate in a current-limiting fashion, depend‐ ing on the type of control selected. (CMP-10)

Fuse

An overcurrent protective device with a circuit-opening fusible part that is heated and severed by the passage of over‐ current through it. (CMP-10) Informational Note: A fuse comprises all the parts that form a unit capable of performing the prescribed functions. It may or may not be the complete device necessary to connect it into an electrical circuit. Controlled Vented Power Fuse. A fuse with provision for control‐ ling discharge circuit interruption such that no solid material may be exhausted into the surrounding atmosphere. Informational Note: The fuse is designed so that discharged gases will not ignite or damage insulation in the path of the discharge or propagate a flashover to or between grounded members or conduction members in the path of the discharge where the distance between the vent and such insulation or conduction members conforms to manufacturer's recommendations.

Ground Fault

An unintentional, electrically conductive connection between an ungrounded conductor of an electrical circuit and the normally non-current-carrying conductors, metallic enclosures, metallic raceways, metallic equipment, or earth. (CMP-5)

Show Window.

Any window, including windows above doors, used or designed to be used for the display of goods or advertising material, whether it is fully or partly enclosed or entirely open at the rear and whether or not it has a platform raised higher than the street floor level. (CMP-2)

Intrinsically Safe Apparatus

Apparatus in which all the circuits are intrinsically safe. (CMP-14)

Associated Apparatus [as applied to Hazardous Classified Locations

Apparatus in which the circuits are not necessarily intrinsically safe themselves but that affects the energy in the intrinsically safe circuits and is relied on to maintain intrinsic safety. Such apparatus is one of the following: (1) Electrical apparatus that has an alternative type of protection for use in the appropriate hazardous (classified) location (2) Electrical apparatus not so protected that shall not be used within a hazardous (classified) location

Associated Nonincendive Field Wiring Apparatus as applied to Hazardous Classified Locations

Apparatus in which the circuits are not necessarily nonincendive themselves but that affect the energy in nonincendive field wiring circuits and are relied upon to maintain nonincendive energy levels. Such apparatus are one of the following: (1) Electrical apparatus that has an alternative type of protec‐ tion for use in the appropriate hazardous (classified) location (2) Electrical apparatus not so protected that shall not be used in a hazardous (classified) location (CMP-14) Informational Note: Associated nonincendive field wiring appa‐ ratus has designated associated nonincendive field wiring appa‐ ratus connections for nonincendive field wiring apparatus

Nonincendive Field Wiring Apparatus [as applied to Hazardous (Classified) Locations]

Apparatus intended to be connected to nonincendive field wiring. (CMP-14)

The conductors and equipment required or permitted by this code shall be acceptable only if _____________.

Approved

General requirements for the examination and approval, installation and use, access to and spaces about electrical conductors and equipment; enclosures intended for personal entry; and tunnel installations are within the scope of ___________________.

Article 110

General requirements for the examination and approval, installation and use, access to and spaces about electrical conductors and equipment; enclosures intended for personnel entry; and tunnel installations are within the scope of _____.

Article 110

A conductor of electricity includes: a. Wood b. Perspiration c. Rubber d. Glass

A person who is by education or professional standing, or who by extensive knowledge, training, and experience has successfully demonstrated their ability to solve or resolve problems is called a: a. Competent person b. Qualified person c. Contractor d. Site supervisor

A tag acts as a: a. Blocking device b. Warning device c. Locking device d. All of the above

After servicing of electrical or mechanical equipment, you should first: a. Remove the lock, if you applied it b. Replace all machine guards c. Reconnect all sources of energy d. Remove the tag, if you applied it

Equipment necessary when entering a confined space includes _____. a. A body belt b. A full-body harness c. Hearing protection d. Safety glasses

The PASS method of extinguisher use stands for: a. Pick, activate, standby, start b. Pull, aim, squeeze, sweep c. Point, alter, steady, stay d. Pop, administer, shower, set down

An example of a confined space is: a. A 3-ft deep pit b. Areas where walls are framed 16 in. on center c. Ventilation ducts d. All of these

Compliance with the provisions of the NEC will result in _____. A: good electrical service B: an efficient electrical system C: an electrical system essentially free from hazard D: all of these

Electrical hazards often occur because the initial _____ did not provide for increases in the use of electricity and therefore wiring systems become overloaded. A: inspection B: owner C: wiring D: builder

Factory-installed _____ wiring of listed equipment need not be inspected at the time of installation of the equipment, except to detect alterations or damage. A: external B: associated C: internal D: all of these

If the NEC requires new products that are not yet available at the time a new edition is adopted, the _____ may permit the use of the products that comply with the most recent previous edition of the Code adopted by that jurisdiction. A: electrical engineer B: master electrician C: authority having jurisdiction D: permit holder

If the employee who applied the lock and tag is absent, they can be removed by: a. Other employees b. Competent person c. Qualified Person d. None of the above

Installations of communications equipment that are under the exclusive control of communications utilities and located outdoors or in building spaces used exclusively for such installations _____ covered by the NEC. A: are B: are sometimes C: are not D: may be

Installations used to export electric power from vehicles to premises wiring or for _____ current flow are covered by the NEC. A: emergency B: primary C: bidirectional D: secondary

It is the intent of the NEC that factory-installed _____ wiring of listed equipment need not be inspected at the time of installation of the equipment, except to detect alterations or damage. A: external B: associated C: internal D: all of these

Lockout devices should be used on: a. Toolboxes b. Storage sheds c. Power sources d. Other devices

Oxygen can become dangerous above the following level: _____ percent. a. 19.50 b. 20.80 c. 23.50 d. All of these

Responding to a chemical spill or hazardous waste clean-up requires training in: a. Hazardous Communication (HazCom) b. Hazardous Materials (HazMat) c. Hazardous Waste Operations and Emergency Response (HAZWOPER) d. HazSafety

Shock can result when your body is: a. Apart from an electrical circuit b. In contact with zero wires of an energized circuit and ground c. In contact with two wires of an electrical circuit d. All of the above

The NEC is _____. A: intended to be a design manual B: meant to be used as an instruction guide for untrained persons C: for the practical safeguarding of persons and property D: published by the Bureau of Standards

The class of hard hat that provides no voltage protection is: a. Class G b. Class E c. Class C d. All of the above

The two major jobsite fire hazards are flammable and combustible liquids, and _______________. a. Welding torches b. Power tools c. Heating devices d. Lumber

To put out an electrical equipment fire, you should use this type of fire extinguisher: a. Class A b. Class B c. Class C d. Class D

Exposed (as applied to live parts)

Capable of being inadver‐ tently touched or approached nearer than a safe distance by a person. (CMP-1) Informational Note: This term applies to parts that are not suita‐ bly guarded, isolated, or insulated

Externally Operable

Capable of being operated without exposing the operator to contact with live parts. (CMP-1)

Accessible, Readily Readily Accessible

Capable of being reached quickly for operation, renewal, or inspections without requiring those to whom ready access is requisite to take actions such as to use tools (other than keys), to climb over or under, to remove obstacles, or to resort to portable ladders, and so forth Informational

Accessible as applied to wiring methods

Capable of being removed or exposed without damaging the building structure or finish or not permanently closed in by the structure or finish of the building

The number of conductors permitted in ENT shall not exceed the percentage fill specified in _____.

Chapter 9, Table 1

Inverter Output Circuit

Conductors connected to the ac output of an inverter

Inverter Input Circuit

Conductors connected to the dc input of an inverter

Copper-Clad Aluminum Conductors

Conductors drawn from a copper-clad aluminum rod, with the copper metallurgically bonded to an aluminum core, where the copper forms a mini‐ mum of 10 percent of the cross-sectional area of a solid conductor or each strand of a stranded conductor. CMP-6

Grounded (Grounding)

Connected (connecting) to ground or to a conductive body that extends the ground connection. (CMP-5)

Bonded, Bonding

Connected to establish electrical continu‐ ity and conductivity. CMP-5

Grounded, Solidly

Connected to ground without inserting any resistor or impedance device. (CMP-5)

Raintight

Constructed or protected so that exposure to a beat‐ ing rain will not result in the entrance of water under specified test conditions. (CMP-1)

Weatherproof

Constructed or protected so that exposure to the weather will not interfere with successful operation. (CMP-1) Informational Note: Rainproof, raintight, or watertight equip‐ ment can fulfill the requirements for weatherproof where vary‐ ing weather conditions other than wetness, such as snow, ice, dust, or temperature extremes, are not a factor.

Watertight

Constructed so that moisture will not enter the enclosure under specified test conditions. (CMP-1)

Rainproof

Constructed, protected, or treated so as to prevent rain from interfering with the successful operation of the appa‐ ratus under specified test conditions. (CMP-1)

A physical hazard that can threaten safety is _____. a. Heat b. Noise c. Underground utilities d. All of these

An accidental release of hazardous energy could cause: a. Accidental start-ups b. Electrical shock c. Release of stored energy d. All of the above

An emergency source that requires lockout/tagout is: a. Mechanical b. Electrical c. Hydraulic d. All of the above

Arcing Occurs when: a. High-amperage current jumps through air b. Circuits are opening and closing c. Static electricity is discharged d. All of the above

Before entering confined spaces, you should know the: a. Required protective and emergency equipment b. Nature of the hazards c. Necessary precautions d. All of these

Chapters 5, 6, and 7 of the NEC apply to _____. A: special occupancies B: special equipment C: special conditions D: all of these

Compliance with the Code and proper maintenance result in an installation that is _____. A: essentially free from hazards B: not necessarily efficient or convenient C: not necessarily adequate for good service or future expansion D: all of these

Flammable gases and vapors may be ignited by: a. Cutting and welding sparks b. Friction c. Hot surfaces d. All of the above

For an evacuation, you should know: a. Alarm system sounds b. Emergency exits c. Headcount location d. All of the above

For the flow of energy to occur, you need a combination of: a. Generating source, conductor, load b. Electricity, wiring, equipment c. Voltage source, electron flow, consuming device d. All of the above

Hazards often occur because of _____. A: overloading of wiring systems by methods or usage not in conformity with the NEC B: initial wiring not providing for increases in the use of electricity C: manufacturing defects D: overloading of wiring systems by methods or usage not in conformity with the NEC and initial wiring not providing for increases in the use of electricity

If an emergency occurs, you should know: a. Reporting procedures b. Escape procedures c. Rescue and medical duties d. All of the above

If you're a trained attendant, you should _________. a. Be knowledgeable in first aid and cardiopulmonary resuscitation b. Be in constant communication with the entrant c. Remain outside of the space d. All of these

If your company acts as an outside contractor, you must be informed of: a. Company objectives b. Meaning of locks or tags c. Lockout/tagout procedures d. b and c

In the NEC, the word(s) \"_____\" indicate a mandatory requirement. A: shall B: shall not C: shall be permitted D: shall or shall not

Locking out equipment is complete when: a. One power source is locked out b. Two power sources are locked out c. Three power sources are locked out d. All power sources than can be locked out are locked out

Nonmandatory Informative Annexes contained in the back of the Code book are _____. A: for information only B: not enforceable as a requirement of the Code C: enforceable as a requirement of the Code D: for information only and not enforceable as a requirement of the Code

The Assured Equipment Grounding Conductor Program requires the following test(s) to be conducted before first use of the new equipment: a. Continuity test b. Grounding conductor test c. Visual inspection d. All of the above

The Code contains provisions considered necessary for safety, which will not necessarily result in _____. A: efficient use B: convenience C: good service or future expansion of electrical use D: all of these

The NEC applies to the installation of _____. A: electrical conductors and equipment within or on public and private buildings B: signaling and communication conductors C: optical fiber cables D: all of these

The NEC does apply to installations in _____. A: floating buildings B: mobile homes C: recreational vehicles D: all of these

The authority having jurisdiction has the responsibility for _____. A: making interpretations of rules B: deciding upon the approval of equipment and materials C: waiving specific requirements in the Code and permitting alternate methods and material if safety is maintained D: all of these

The materials that are considered potential fuels include: a. Lumber b. Gasoline c. Chemicals d. All of the above

The two types of grounding are: a. insulation and PPE b. Fuses and GFCI's c. Guarding and Voltage d. Electrical circuit and electrical equipment

The type of foot protection that should be used to prevent accumulation of static electricity is : a. Conductive shoes b. Static dissipative shoes c. Safety boots d. a and b

The types of hand hazards that you can be exposed to on a jobsite include: a. Mechanical b. Environmental c. Chemical d. All of the above

The types of materials that can cause eye injury include: a. Dust b. Metals c. Vapors d. All of the above

This Code covers the installation of _____ for public and private premises, including buildings, structures, mobile homes, recreational vehicles, and floating buildings. A: optical fiber cables B: electrical equipment C: raceways D: all of these

Toxic air contaminants can come from: a. Previously-stored material b. Use of coatings, cleaners, and preservatives c. Work being performed d. All of these

Which of the following systems shall be installed and removed in accordance with the NEC requirements? A: Signaling conductors, equipment, and raceways. B: Communications conductors, equipment, and raceways. C: Electrical conductors, equipment, and raceways. D: all of these

Service Equipment (Service Disconnect)

Disconnects such as circuit breakers or switches connected to the serving electric utility, intended to control and disconnect the power from the serving electric utility. Note: Service equipment includes the necessary equipment connected to the utility electric system and intended to constitute the main control and disconnect of the utility electric system.

Combustible Dust as applied to Hazardous, Classified, Loca‐ tions

Dust particles that are 500 microns or smaller (i.e., material passing a U.S. No. 35 Standard Sieve as defined in ASTM E11-2015, Standard Speciation for Woven Wire Test Sieve Cloth and Test Sieves ), and present a fire or explosion hazard when dispersed and ignited in air. CMP-14 Informational Note: See ASTM E1226-2012a, Standard Test Method for Explosibility of Dust Clouds, or ISO 6184-1, Explosion protection systems — Part 1: Determination of explosion indices of combustible dusts in air, for procedures for determining the explosibility of dusts.

Oil Immersion [as applied to Hazardous (Classified) Loca‐ tions].

Electrical equipment immersed in a protective liquid in such a way that an explosive atmosphere that may be above the liquid or outside the enclosure cannot be ignited. (CMP-14)

Power Production Equipment

Electrical generating equipment supplies by any source other than a utility service, up to the source system's disconnecting means.

Energized

Electrically connected to, or is, a source of voltage. (CMP-1)

Reconditioned

Electromechanical systems, equipment, apparatus, or components that are restored to operating conditions. This process differs from normal servicing of equipment that remains within a facility, or replacement of listed equipment on a one-to-one basis. Note: The term reconditioned is frequently referred to as rebuilt, refurbished, or remanufactured.

Dusttight

Enclosures constructed so that dust will not enter under specified test conditions. CMP-14

Live Parts

Energized conductive components. (CMP-1)

Information Technology Equipment (ITE).

Equipment and systems rated 1000 volts or less, normally found in offices or other business establishments and similar environments classi‐ fied as ordinary locations, that are used for creation and manipulation of data, voice, video, and similar signals that are not communications equipment as defined in Part I of Article 100 and do not process communications circuits as defined in 800.2. (CMP-12)

Sealable Equipment

Equipment enclosed in a case or cabinet that is provided with a means of sealing or locking so that live parts cannot be made accessible without opening the enclosure. (CMP-1) Informational Note: The equipment may or may not be opera‐ ble without opening the enclosure.

Explosionproof Equipment

Equipment enclosed in a case that is capable of withstanding an explosion of a specified gas or vapor that may occur within it and of preventing the ignition of a specified gas or vapor surrounding the enclosure by sparks, flashes, or explosion of the gas or vapor within, and that oper‐ ates at such an external temperature that a surrounding flam‐ mable atmosphere will not be ignited thereby. (CMP-14) Informational Note: For further information, see ANSI/ UL 1203-2009, Explosion-Proof and Dust-Ignition-Proof Electrical Equipment for Use in Hazardous (Classied) Locations.

Dust-Ignitionproof [as applied to Hazardous, Classified Loca‐ tions

Equipment enclosed in a manner that excludes dusts and does not permit arcs, sparks, or heat otherwise generated or liberated inside of the enclosure to cause ignition of exterior accumulations or atmospheric suspensions of a specified dust on or in the vicinity of the enclosure. CMP-14

Nonincendive Equipment [as applied to Hazardous (Classified) Locations]

Equipment having electrical/electronic circuitry that is incapable, under normal operating conditions, of caus‐ ing ignition of a specified flammable gas-air, vapor-air, or dust-air mixture due to arcing or thermal means. (CMP-14)

Inverter, Multimode

Equipment having the capabilities of both the interactive inverter and the stand-alone inverter.

Field Labeled (as applied to evaluated products)

Equipment or materials to which has been attached a label, symbol, or other identifying mark of an FEB indicating the equipment or materials were evaluated and found to comply with require‐ ments as described in an accompanying field evaluation report. (CMP-1)

Labeled

Equipment or materials to which has been attached a label, symbol, or other identifying mark of an organization that is acceptable to the authority having jurisdiction and concerned with product evaluation, that maintains periodic inspection of production of labeled equipment or materials, and by whose labeling the manufacturer indicates compliance with appropriate standards or performance in a specified manner. (CMP-1)

Hermetically Sealed [as applied to Hazardous (Classified) Locations

Equipment sealed against the entrance of an exter‐ nal atmosphere where the seal is made by fusion, for example, soldering, brazing, welding, or the fusion of glass to metal. (CMP-14) Informational Note: For further information, see ANSI/ ISA-12.12.01-2013, Nonincendive Electrical Equipment for Use in Class I and II, Division 2, and Class III, Divisions 1 and 2 Hazardous (Classied) Locations.

Inverter

Equipment that changes dc to ac

Charge Controller

Equipment that controls dc voltage or dc current, or both, and that is used to charge a battery or other energy storage device. CMP-13

Accessible (as applied to equipment).

Equipment that is capable of being reached for operation, renewal, and inspection.

Utilization Equipment

Equipment that utilizes electric energy for electronic, electromechanical, chemical, heating, lighting, or similar purposes. (CMP-1)

Portable Equipment

Equipment with electrical components suitable to be moved by a single person without mechanical aids. (CMP-14)

Mobile Equipment

Equipment with electrical components suitable to be moved only with mechanical aids or is provided with wheels for movement by person(s) or powered devices. (CMP-14)

Listed

Equipment, materials, or services included in a list published by an organization that is acceptable to the authority having jurisdiction and concerned with evaluation of products or services, that maintains periodic inspection of production of listed equipment or materials or periodic evaluation of services, and whose listing states that either the equipment, material, or service meets appropriate designated standards or has been tested and found suitable for a specified purpose. (CMP-1) Informational Note: The means for identifying listed equipment may vary for each organization concerned with product evalua‐ tion, some of which do not recognize equipment as listed unless it is also labeled. Use of the system employed by the listing organization allows the authority having jurisdiction to identify a listed product.

Service entrance conductors shall be continuous and are not permitted to be spliced or tapped. True or False

False

Show window loads are permitted to be calculated at 180 VA per linear ft of a show window. True or False

False

The Code covers underground mine installations and self-propelled mobile surface mining machinery and its attendant electrical trailing cable. Answer 1: True Answer 2: False

False

The dedicated space above a panelboard extends to a dropped or suspended ceiling, which is considered a structural ceiling. True or False

False

The demand factors of Table 220.56 apply to space-heating, ventilating, or air-conditioning equipment. True or False

False

The provisions of Article 300 apply to the conductors that form an integral part of equipment or listed utilization equipment.

False

The surge protective device (SPD) required for a dwelling unit shall be an integral part of the service equipment or be located immediately adjacent thereto and is not permitted to be located in the downstream panelboard. True or False

False

When installed under metal-corrugated sheet roof decking, the rules for spacing from roof decking apply equally to rigid metal conduit and intermediate metal conduit.

False

Where bonding jumper(s) are used to connect the grounding electrodes together to form the grounding electrode system, rebar is permitted to be used as a conductor to interconnect the electrodes.

False

Where there are two or more air-conditioning units served by the same feeder, it shall be permissible to apply a dwelling unit appliance load demand factor of 75 percent. True or False

False

Voltage to Ground

For grounded circuits, the voltage between the given conductor and that point or conductor of the circuit that is grounded; for ungrounded circuits, the greatest voltage between the given conductor and any other conductor of the circuit. (CMP-1)

All 125V through 250V receptacles supplied by single-phase branch circuits rated 150V or less to ground installed in dwelling unit boathouses shall have _____ protection for personnel.

GFCI

Circuit breakers used to switch high-intensity discharge lighting circuits shall be listed and marked as _____.

HID

Battery System

Interconnected battery subsystems consisting of one or more storage batteries and battery chargers, and can include inverters, converters, and associated electrical equip‐ ment. CMP-13

Premises Wiring (System)

Interior and exterior wiring, including power, lighting, control, and signal circuit wiring together with all their associated hardware, fittings, and wiring devices, both permanently and temporarily installed. This includes (a) wiring from the service point or power source to the outlets or (b) wiring from and including the power source to the outlets where there is no service point. Such wiring does not include wiring internal to appliances, luminaires, motors, controllers, motor control centers, and similar equipment. (CMP-1) Informational Note: Power sources include, but are not limited to, interconnected or stand-alone batteries, solar photovoltaic systems, other distributed generation systems, or generators.

Duty, Periodic

Intermittent operation in which the load conditions are regularly recurrent. (CMP-1)

_____ is a raceway of circular cross section having an outer liquidtight, nonmetallic, sunlight-resistant jacket over an inner flexible metal core.

LFMC

Unclassified Locations [as applied to Hazardous (Classified) Locations]

Locations determined to be neither Class I, Divi‐ sion 1; Class I, Division 2; Class I, Zone 0; Class I, Zone 1; Class I, Zone 2; Class II, Division 1; Class II, Division 2; Class III, Division 1; Class III, Division 2; Zone

Location, Damp

Locations protected from weather and not subject to saturation with water or other liquids but subject to moderate degrees of moisture. (CMP-1) Informational Note: Examples of such locations include partially protected locations under canopies, marquees, roofed open porches, and like locations, and interior locations subject to moderate degrees of moisture, such as some basements, some barns, and some cold-storage warehouses.

Type _____ cable is a factory assembly of insulated circuit conductors within an armor of interlocking metal tape, or a smooth or corrugated metallic sheath.

Wiring methods that are permitted to be installed in ducts fabricated for environmental air include _____.

MC cable without and overall metallic covering, EMT, or RMC (all of these)

_____ wiring methods can be installed in a cable tray.

Metal raceway, nonmetallic raceway, and cable (all of these)

_____ shall not be used as grounding electrodes.

Metal underground gas piping systems and aluminum

When a building is supplied with a(an) _____ fire sprinkler system, ENT shall be permitted to be used within walls, floors, and ceilings, exposed or concealed, in buildings exceeding three floors above grade.

NFPA 13

Type _____ cable is a factory assembly that encloses two or more insulated conductors within a nonmetallic jacket.

____________ conductors shall not be used for more than one branch circuit, one multiwire branch circuit, or more than one set of ungrounded feeder conductors except as allowed elsewhere in the Code.

Neutral

Qualified Person

One who has skills and knowledge related to the construction and operation of the electrical equipment and installations and has received safety training to recognize and avoid the hazards involved. (CMP-1)

Duty, Short-Time

Operation at a substantially constant load for a short and definite, specified time. (CMP-1)

Duty, Continuous

Operation at a substantially constant load for an indefinitely long time. CMP-1

Duty, Varying

Operation at loads, and for intervals of time, both of which may be subject to wide variation. (CMP-1)

Duty, Intermittent

Operation for alternate intervals of (1) load and no load; or (2) load and rest; or (3) load, no load, and rest. (CMP-1)

Overload

Operation of equipment in excess of normal, fullload rating, or of a conductor in excess of rated ampacity that, when it persists for a sufficient length of time, would cause damage or dangerous overheating. A fault, such as a short circuit or ground fault, is not an overload. (CMP-10)

Part II

Over 1000 Volts, Nominal

_____ shall not be located over the steps of a stairway.

Overcurrent devices

Automatic

Performing a function without the necessity of human intervention. CMP-1

Adjustable Speed Drive

Power conversion equipment that provides a means of adjusting the speed of an electric motor Informational Note: A variable frequency drive is one type of electronic adjustable speed drive that controls the rotational speed of an ac electric motor by controlling the frequency and voltage of the electrical power supplied to the motor.

Electric Power Production and Distribution Network

Power production, distribution, and utilization equipment and facili‐ ties, such as electric utility systems that deliver electric power to the connected loads, that are external to and not controlled by an interactive system. (CMP-13)

Ventilated

Provided with a means to permit circulation of air sufficient to remove an excess of heat, fumes, or vapors. (CMP-14)

Type _____ cable is an assembly primarily used for services.

Enclosed

Surrounded by a case, housing, fence, or wall(s) that prevents persons from accidentally contacting energized parts. (CMP-1)

Electric-Discharge Lighting

Systems of illumination utilizing fluorescent lamps, high-intensity discharge (HID) lamps, or neon tubing. (CMP-18)

Enclosure

The case or housing of apparatus, or the fence or walls surrounding an installation to prevent personnel from accidentally contacting energized parts or to protect the equipment from physical damage. (CMP-1) Informational Note: See Table 110.28 for examples of enclosure types.

Branch Circuit

The circuit conductors between the final over‐ current device protecting the circuit and the outlet's. CMP-2

Control Circuit

The circuit of a control apparatus or system that carries the electric signals directing the performance of the controller but does not carry the main power current. CMP-11

Neutral Point

The common point on a wye-connection in a polyphase system or midpoint on a single-phase, 3-wire system, or midpoint of a single-phase portion of a 3-phase delta system, or a midpoint of a 3-wire, direct-current system. (CMP-5) Informational Note: At the neutral point of the system, the vectorial sum of the nominal voltages from all other phases within the system that utilize the neutral, with respect to the neutral point, is zero potential.

Grounding Conductor, Equipment (EGC)

The conductive path(s) that provides a ground-fault current path and connects normally non-current-carrying metal parts of equipment together and to the system grounded conductor or to the grounding electrode conductor, or both. (CMP-5) Informational Note No. 1: It is recognized that the equipment grounding conductor also performs bonding. Informational Note No. 2: See 250.118 for a list of acceptable equipment grounding conductors

Neutral Conductor

The conductor connected to the neutral point of a system that is intended to carry current under normal conditions. (CMP-5)

Service [Article 230]

The conductors and equipment for delivering electric energy from the serving utility to the wiring system of the premises served. (CMP-4)

Service Conductors

The conductors from the service point to the service disconnecting means. (CMP-4) Note: Service conductors originate at the service point and terminate at the service disconnecting means.

Ground

The earth. (CMP-5)

Communications Equipment

The electronic equipment that performs the telecommunications operations for the transmission of audio, video, and data, and includes power equipment (e.g., dc converters, inverters, and batteries), technical support equipment (e.g., computers), and conductors dedicated solely to the operation of the equipment. CMP-16 Informational Note: As the telecommunications network transitions to a more data-centric network, computers, routers, servers, and their powering equipment, are becoming essential to the transmission of audio, video, and data and are finding increasing application in communications equipment installations.

Interrupting Rating

The highest current at rated voltage that a device is identified to interrupt under standard test condi‐ tions. (CMP-10) Informational Note: Equipment intended to interrupt current at other than fault levels may have its interrupting rating implied in other ratings, such as horsepower or locked rotor current.

Premises Wiring

The interior and exterior wiring, including power, lighting, control, and signal circuit wiring together with all their associated hardware, fittings, and wiring devices. This includes both permanently and temporarily installed wiring from the service point to the outlets. Where there is no service point, it is the wiring from and including the electric power source (such as a generator, transformer, or PV system) to the outlets. Premises wiring does not include internal wiring of electrical equipment and appliances such as luminaires, dishwashers, water heaters, motors, controllers, motor control centers, air-conditioning equipment, and so.

Island Mode

The operational mode for stand-alone power production equipment or an isolated microgrid (or for a multimode inverter or an interconnected microgrid) that is disconnected from an electric power production and distribution network or other primary power source.

Service Conductors, Overhead

The overhead conductors between the service point and the first point of connection to the service-entrance conductors at the building or other struc‐ ture. (CMP-4)

Service Drop

The overhead conductors between the serving electric supply system and the service point. (CMP-4)

Service Point

The point of connection between the facilities of the serving utility and the premises wiring. (CMP-4) Informational Note: The service point can be described as the point of demarcation between where the serving utility ends and the premises wiring begins. The serving utility generally specifies the location of the service point based on the conditions of serv‐ ice.

Purged and Pressurized [as applied to Hazardous (Classified) Locations]

The process of (1) purging, supplying an enclosure with a protective gas at a sufficient flow and positive pres‐ sure to reduce the concentration of any flammable gas or vapor initially present to an acceptable level; and (2) pressuri‐ zation, supplying an enclosure with a protective gas with or without continuous flow at sufficient pressure to prevent the entrance of a flammable gas or vapor, a combustible dust, or an ignitible fiber. (CMP-14)

Pressurized [as applied to Hazardous (Classified) Locations].

The process of supplying an enclosure with a protective gas with or without continuous flow, at sufficient pressure to prevent the entrance of combustible dust or ignitible fibers/ flyings. (CMP-14)

Short-Circuit Current Rating

The prospective symmetrical fault current at a nominal voltage to which an apparatus or system is able to be connected without sustaining damage exceeding defined acceptance criteria. (CMP-10)

Demand Factor

The ratio of the maximum demand of a system, or part of a system, to the total connected load of a system or the part of the system under consideration. CMP-2

Service-Entrance Conductors, Overhead System

The service conductors between the terminals of the service equipment and a point usually outside the building, clear of building walls, where joined by tap or splice to the service drop or overhead service conductors. (CMP-4)

Service-Entrance Conductors, Underground System.

The service conductors between the terminals of the service equipment and the point of connection to the service lateral or under‐ ground service conductors. (CMP-4) Informational Note: Where service equipment is located outside the building walls, there may be no service-entrance conductors or they may be entirely outside the building.

Generating Capacity, Inverter

The sum of parallel-connected inverters' maximum continuous output power at 40 degrees Celsius in watts or kilowatts.

Photovoltaic (PV) System

The total components and subsys‐ tem that, in combination, convert solar energy into electric energy for connection to a utilization load. (CMP-4)

Service Lateral

The underground conductors between the utility electric supply system and the service point. (CMP-4)

Service Conductors, Underground

The underground conduc‐ tors between the service point and the first point of connection to the service-entrance conductors in a terminal box, meter, or other enclosure, inside or outside the building wall. (CMP-4) Informational Note: Where there is no terminal box, meter, or other enclosure, the point of connection is considered to be the point of entrance of the service conductors into the building.

Setting (of circuit breakers)

The value of current, time, or both, at which an adjustable circuit breaker is set to trip.

Thermally Protected (as applied to motors)

The words Ther‐ mally Protected appearing on the nameplate of a motor or motorcompressor indicate that the motor is provided with a thermal protector. (CMP-11)

Special Permission

The written consent of the authority having jurisdiction. (CMP-1)

A single receptacle installed on an individual branch circuit shall have an ampere rating not less than that of the branch circuit. True or False

True

All 125V through 250V receptacles installed in crawl spaces at or below grade level of dwelling units, and supplied by single-phase branch circuits rated 150V or less to ground, shall have GFCI protection for personnel. True or False

True

All 15A or 20A, 120V branch circuits that supply outlets or devices in dwelling unit kitchens, family rooms, dining rooms, living rooms, parlors, libraries, dens, bedrooms, sunrooms, recreation rooms, closets, hallways, laundry areas, or similar rooms or areas shall be AFCI protected by a listed arc-fault circuit interrupter. True or False

True

All services in dwelling units shall be provided with a surge protective device (SPD). True or False

True

All single-phase receptacles rated 150V to ground or less, 50A or less, and three-phase receptacles rated 150V to ground or less, 100A or less installed in locker rooms with associated showering facilities shall be GFCI protected. True or False

True

All single-phase receptacles rated 150V to ground or less, 50A or less, and three-phase receptacles rated 150V to ground or less, 100A or less installed indoors, in other than dwelling units, in damp and wet locations shall be GFCI protected. True or False

True

Alternating-current circuits of less than 50V shall be grounded if supplied by a transformer whose supply system exceeds 150 volts-to-ground.

True

Alternating-current systems of 50V to 1,000V that supply premises wiring systems shall be grounded where supplied by a three-phase, 4-wire, delta-connected system in which the midpoint of one phase winding is used as a circuit conductor.

True

Alternating-current systems of 50V to 1,000V that supply premises wiring systems shall be grounded where the system is three-phase, 4-wire, wye-connected, with the neutral conductor used as a circuit conductor.

True

An important consideration for limiting imposed voltage on electrical systems is to remember that bonding and grounding electrode conductors should not be any longer than necessary and unnecessary bends and loops should be avoided.

True

An individual 20A branch circuit can supply a single dwelling unit bathroom for receptacle outlet(s) and other equipment within the same bathroom. True or False

True

For grounded systems, normally noncurrent-carrying conductive materials enclosing electrical conductors or equipment shall be connected to earth so as to limit the voltage-to-ground on these materials.

True

GFCI protection shall be provided for all 15A and 20A, 125V, single-phase receptacles in dwelling unit finished portions of basements intended as habitable space. True or False

True

Grounding electrode conductor taps from a separately derived system to a common grounding electrode conductor are permitted when a building or structure has multiple separately derived systems, provided that the taps terminate at the same point as the system bonding jumper.

True

If the voltage between overhead service conductors does not exceed 300V and the roof area is guarded or isolated, a reduction in clearance to 3 ft is permitted. True or False

True

One set of service-entrance conductors connected to the supply side of the normal service disconnecting means shall be permitted to supply standby power systems, fire pump equipment, and fire and sprinkler alarms covered by 230.82(5). True or False

True

Outside branch circuits and feeders shall not be installed beneath openings through which materials may be moved and shall not be installed where they will obstruct the entrance to these buildings' openings. True or False

True

Receptacle outlet assemblies listed for use in countertops shall be permitted to be installed in countertops of dwelling unit bathrooms. True or False

True

Receptacles installed behind a bed in the guest rooms in hotels and motels shall be located to prevent the bed from contacting an attachment plug, or the receptacle shall be provided with a suitable guard. True or False

True

Receptacles installed for countertop and similar work surfaces as specified in 210.52(C) shall not be considered as the receptacle outlets required by 210.52(A). True or False

True

Reconditioned equipment's original listing mark may include the mark of the certifying body and not the entire equipment label. True or False

True

Reinforcing bars for use as a concrete-encased electrode can be bonded together by the usual steel tie wires or other effective means.

True

Service conductors shall not be installed beneath openings through which materials may be moved and shall not be installed where they will obstruct entrance to these buildings\' openings. True or False

True

Single-pole breakers with identified handle ties can be used to protect each ungrounded conductor for line-to-line connected loads. True or False

True

Solar photovoltaic systems, fuel cell systems, wind electric systems, energy storage systems, or interconnected electric power production sources are permitted to be connected to the supply side of the service disconnecting means. True or False

True

Some cleaning and lubricating compounds can cause severe deterioration of many plastic materials used for insulating and structural applications in equipment. True or False

True

The grounding of electrical systems, circuit conductors, surge arresters, surge-protective devices, and conductive normally noncurrent-carrying metal parts of equipment shall be installed and arranged in a manner that will prevent objectionable current.

True

The minimum height of working spaces about electrical equipment, switchboards, panelboards, or motor control centers operating at 1,000V, nominal, or less and likely to require examination, adjustment, servicing, or maintenance, while energized, shall be 6 1/2 ft or the height of the equipment, whichever is greater, except for service equipment or panelboards in existing dwelling units that do not exceed 200A. True or False

True

The required receptacle outlet for heating, air-conditioning, and refrigeration equipment, shall not be connected to the load side of the equipment's branch-circuit disconnecting means. True or False

True

The use of LFMC shall be permitted for direct burial where listed and marked for the purpose.

True

Where a building or structure is supplied by more than one service, a permanent plaque or directory shall be installed at each service disconnect location denoting all other services supplying that building or structure and the area served by each. True or False

True

Where a mast is used for overhead branch-circuit or feeder conductor support, it shall have adequate strength or be supported by braces or guys to safely withstand the strain imposed by the conductors. True or False

True

Where a motor is part of the noncoincident load and it is not the largest of the noncoincident loads, 125 percent of the motor load shall be used in the calculation if it is the largest motor.

True

Where a portion of the dwelling unit basement is finished into one or more habitable rooms, each separate unfinished portion shall have a receptacle outlet installed. True or False

True

Where dwelling unit service equipment is replaced, a surge protective device (SPD) shall be installed. True or False

True

Where equipment operating at 1,000V, nominal, or less to ground and likely to require examination, adjustment, servicing, or maintenance while energized is required by installation instructions or function to be located in a space with limited access, the space in front of the enclosure shall comply with the depth requirements of Table 110.26(A)(1). True or False

True

Where fuses are used as the service overcurrent device, the disconnecting means shall be located ahead of the supply side of the fuses in accordance with 230.91. True or False

True

Where more than one feeder is installed to a building in accordance with this 225.30(B), all feeder disconnects in the building shall be grouped in the same location. True or False

True

The surge protective device (SPD) required for a dwelling unit service shall be _____.

Type 1 or 2

Electrical equipment shall not be connected to the supply side of the service disconnecting means, except for a few specific exceptions such as _____.

Type 1 surge-protective devices, taps used to supply standby power systems, fire pump equipment, fire and sprinkler alarms, and load (energy) management devices, solar photovoltaic systems (all of these)

Article 340 covers the use, installation, and construction specifications for underground feeder and branch-circuit cable, Type _____.

Type _____ cable is a factory assembly of conductors with an overall covering of nonmetallic material suitable for direct burial in the earth.

Type _____ cable is a single conductor or multiconductor cable identified for use as underground service-entrance cable.

USE

_____ alternating-current systems operating at 480V shall have ground detectors installed on the system.

Ungrounded

Appliance

Utilization equipment, generally other than industrial, that is normally built in standardized sizes or types and is installed or connected as a unit to perform one or more functions such as clothes washing, air-conditioning, food mixing, deep frying, and so forth

Type MC cable shall not be used under which of the following conditions?

Where subject to physical damage, buried in the earth or embedded in concrete unless identified for direct burial, Exposed to cinder fills, strong chlorides, caustic alkalis, or vapors of chlorine or of hydrochloric acids. (all of these)

In Sight From (Within Sight From, Within Sight)

Where this Code specifies that one equipment shall be "in sight from," "within sight from," or "within sight of," and so forth, another equipment, the specified equipment is to be visible and not more than 15 m (50 ft) distant from the other. (CMP-1)

Nonincendive Field Wiring [as applied to Hazardous (Classi‐ fied) Locations]

Wiring that enters or leaves an equipment enclosure and, under normal operating conditions of the equipment, is not capable, due to arcing or thermal effects, of igniting the flammable gas-air, vapor-air, or dust-air mixture. Normal operation includes opening, shorting, or grounding the field wiring. (CMP-14)

Dead Front

Without live parts exposed to a person on the operating side of the equipment. CMP-9

Type _____ insulated conductors shall not be subject to ampacity adjustment where installed exposed to direct sunlight on a rooftop.

XHHW-2

Article 100 contains definitions essential to the application of the Code. Definitions are also found in ___________.

XXX.2 of other articles

Where IMC enters a box, fitting, or other enclosure, _____ shall be provided to protect the wire from abrasion unless the design of the box, fitting, or enclosure affords equivalent protection.

a bushing

Where RMC enters a box, fitting, or other enclosure, _____ shall be provided to protect the wire from abrasion, unless the design of the box, fitting, or enclosure affords equivalent protection.

a bushing

Tap connections to a common grounding electrode conductor for multiple separately derived systems shall be made at an accessible location by _____.

a connector listed as grounding and bonding equipment, listed connections to aluminum or copper busbars, and the exothermic welding process (any of these)

An equipment grounding conductor shall be identified by _____.

a continuous outer finish that is green, being bare, or a continuous outer finish that is green with one or more yellow stripes (any of these)

Where grounded conductors of different systems are installed in the same raceway, cable, or enclosure, each neutral conductor shall be identified to distinguish the systems by _____________.

a continuous white or gray outer finish for one system, a neutral conductor with a different continuous white or gray outer finish or white or gray with a stripe for one system, or other identification allowed by 200.6(A) or (B) that distinguishes each system from other systems (any of these)

A device or utilization equipment wider than a single 2 in. device box shall have _____ allowance provided for each gang required for mounting.

a double volume

Each strap containing one or more devices shall count as _____ allowance in accordance with Table 314.16(B), based on the largest conductor connected to a device(s) or equipment supported by the strap.

a double volume

The continuity of a grounded conductor shall not depend on a connection to _________________.

a metallic enclosure, a race way, or cable armor (any of these)

The arc energy reduction protection system shall be performance tested when first installed by _____ in accordance with the manufacturer.

a qualified person(s)

Service heads on raceways or service-entrance cables and goosenecks in service-entrance cables shall be located _____ the point of attachment, unless impracticable.

above

Service equipment labeling shall not be required if an arc flash label is applied in accordance with _________________ industry practice.

acceptable

Electrical equipment rooms or enclosures housing electrical apparatus that are controlled by a lock(s) shall be considered _____ to qualified persons.

accessible

The bonding jumper used to bond the metal water piping system shall be installed in accordance with 250.64(A), 250.64(B), and 250.64(E) and the points of attachment of the bonding jumper(s) shall be _____.

accessible

achieve

Underground service conductors shall have _____.

adequate mechanical strength and sufficient ampacity for the loads calculated

Where more than two Type SE cables are installed in contact with thermal insulations, caulk, or sealing foam without maintaining spacing between cables, the ampacity of each conductor shall be _____ in accordance with Table 310.15(C)(1).

adjusted

The minimum service-entrance conductor size shall have an ampacity not less than the maximum load to be served after the application of any _____ factors.

adjustment and correction

Handhole enclosures shall be designed and installed to withstand _____.

all loads likely imposed upon them

All 15A and 20A, 125V, single-phase receptacles installed in bathrooms of ______________ shall have ground-fault circuit-interrupter (GFCI) protection for personnel

all occupancies

_____ is a nonferrous, nonmagnetic metal that has no heating due to hysteresis heating.

aluminium

Separately installed pressure connectors shall be used with conductors at the ____________ not exceeding the ampacity at the listed and identified temperature rating of the connector.

ampacities

Tap conductors not over 25 ft in length shall be permitted, providing the _____.

ampacity of the tap conductors is not less than one-third the rating of the overcurrent device protecting the feeder conductors being tapped, conductors terminate in a single circuit breaker or set of fuses that limits the load to the ampacity of the tap conductors, and tap conductors are suitably protected from physical damage (all of these)

Fuses shall be marked with their _____.

ampere and voltage rating, interrupting rating where other than 10,000A, or name or trademark of the manufacturer (all of these)

Cartridge fuses in circuits of _____, and all fuses in circuits over 150 volts to ground, shall be provided with a disconnecting means on their supply-side so that each circuit containing fuses can be independently disconnected from the source of power.

any voltage

Receptacle outlets rendered not readily accessible by _____ or appliances occupying assigned spaces shall not be considered as the required countertop or work surface outlets.

appliances fastened in place, appliance garages, and sinks or range tops (all of these)

IMC, elbows, couplings, and fittings shall be permitted to be installed in concrete, in direct contact with the earth, or in areas subject to severe corrosive influences where protected by corrosion protection _____ for the condition.

approved

Where two or more branch circuits supply devices or equipment on the same yoke or mounting strap, a means to disconnect simultaneously the ungrounded supply conductors shall be provided ___________.

at the point where the branch circuit originates

In addition to the number of branch circuits required by other parts of 210.11, at least one 120V, 20A branch circuit shall be installed to supply receptacle outlets in __________ garages with electric power.

attached and detached

For the purposes of 210.65, examples of rooms that are not meeting rooms include _____.

auditoriums, schoolrooms, and coffee shops (all of these)

Where an exit enclosure is required to be separated from the building, only electrical wiring methods serving equipment permitted by the _____ in the exit enclosure shall be installed within the exit enclosure.

authority having jurisdicition

For one- and two-family dwelling units, all service conductors shall terminate in an emergency disconnecting means having a short-circuit current rating equal to or greater than the _____, installed in a readily accessible outdoor location.

available fault current

Since Class 3 control circuits permit higher allowable levels of voltage and current than Class 2 circuits, additional _______________ are specified to provide protection against electric shock. a) circuits b) safeguards c) conditions d) requirements

An electrode encased by at least 2 in. of concrete, located horizontally near the bottom or vertically and within that portion of a concrete foundation or footing that is in direct contact with the earth, shall be permitted as a grounding electrode when it consists of _____.

bare copper conductor not smaller than 4 AWG

At least one wall switch-controlled lighting outlet shall be installed in every habitable room and bathroom of a guest room or guest suite of hotels, motels, and similar occupancies. A receptacle outlet controlled by a wall switch may be used to meet this requirement in other than ____________________.

bathrooms and kitchens

Receptacles installed in bathrooms within six feet of the outside edge of a __________ shall have GFCI protection.

bathtub or shower stall

The intersystem bonding termination shall _____.

be accessible for connection and inspection, consist of a set of terminals with the capacity for connection of not less than three intersystem bonding conductors, and not interfere with opening the enclosure for a service, building/structure disconnecting means, or metering equipment (all of these)

Openings around electrical penetrations into or through fire-resistant-rated walls, partitions, floors, or ceilings shall _____ to maintain the fire-resistance rating.

be firestopped using approved methods

Conductors for general wiring not specifically permitted elsewhere in this Code to be covered or bare shall _____.

be insulated

Bends in LFNC shall _____ between pull points.

be limited to 360 degrees

Bends in PVC conduit shall _____ between pull points.

be limited to 360 degrees

The intersystem bonding termination shall _____.

be securely mounted and electrically connected to service equipment, the meter enclosure, or exposed nonflexible metallic service raceway, or be mounted at one of these enclosures and be connected to the enclosure or grounding electrode conductor with a minimum 6 AWG copper conductor, be securely mounted to the building/structure disconnecting means, or be mounted at the disconnecting means and be connected to the metallic enclosure or grounding electrode conductor with a minimum 6 AWG copper conductor, and have terminals that are listed as grounding and bonding equipment (all of these)

Electrically conductive materials that are likely to _____ in ungrounded systems shall be connected together and to the supply system grounded equipment in a manner that creates a low-impedance path for ground-fault current that is capable of carrying the maximum fault current likely to be imposed on it.

become energized

Where practicable, rod, pipe, and plate electrodes shall be installed _____.

below permanent moisture level

Overhead feeder and/or branch-circuit conductors shall not be attached to a mast where the connection is _____ a weatherhead or the end of the conduit and a coupling where the coupling is located above the last point of securement to the building or other structure, or where the coupling is located above the building or other structure.

between

Outlet boxes can be secured to suspended-ceiling framing members by mechanical means such as _____, or by other means identified for use with the suspended-ceiling framing member(s).

bolts, screws, or rivets (any of these)

Service raceways threaded into metal service equipment such as bosses (hubs) are considered to be effectively _____ to the service metal enclosure.

bonded

If installed in or attached to a building or structure, a metal piping system(s), including gas piping, that is likely to become energized shall be _____ to the equipment grounding conductor for the circuit that is likely to energize the piping system.

bonded to

Metal handhole enclosure covers and other exposed conductive surfaces shall be _____.

bonded to the equipment grounding conductor

A means external to enclosures for connecting intersystem _____ conductors shall be provided at the service equipment or metering equipment enclosure and disconnecting means of buildings or structures supplied by a feeder.

bonding

Electrical continuity at service equipment, service raceways, and service conductor enclosures shall be ensured by _____.

bonding equipment to the grounded service conductor, connections utilizing threaded couplings on enclosures, if made up wrenchtight, or other listed bonding devices, such as bonding-type locknuts, bushings, or bushings with bonding jumpers (any of these)

Metal cable trays containing only nonpower conductors (such as communications, data, and signaling conductors and cables) shall be electrically continuous through approved connections or the use of a(an) _____.

bonding jumper

A wire-type equipment grounding conductor installed in compliance with 250.6(A) and the applicable requirements for _____ in Parts II, III, and VI of Article 250 shall be permitted to serve as _____.

both an equipment grounding conductor and a grounding electrode conductor

_____ shall be installed so that the wiring contained in them can be rendered accessible without removing any part of the building or structure or, in underground circuits, without excavating sidewalks, paving, or earth.

boxes, conduit bodies, or handhole enclosures (all of these)

Article 210 provides the general requirements for __________.

branch circuits

Type SE cable shall be permitted to be used as _____.

branch circuits or feeders

The structural metal frame of a _____ shall not be used as an equipment grounding conductor.

building or structure

Underground raceways entering a(an) _____ from outside shall be sealed.

building or structure

Section 210.52 provides rules for dwelling unit receptacle outlets. The receptacles required by this section shall be in addition to any receptacle that is located within ________.

cabinets or cupboards

Where portions of cable raceways or sleeves are required to be sealed due to different temperatures, sealants shall be identified for use with _____, a bare conductor, a shield, or other components.

cable and conductor insulation

Short sections of metal enclosures or raceways used to provide support or protection of _____ from physical damage shall not be required to be connected to the equipment grounding conductor.

cable assemblies

The requirement to run all paralleled circuit conductors within the same _____ applies separately to each portion of the paralleled installation. Question ID:52880 Answer 1: raceway or auxiliary gutter

cable tray, trench, cable, or cord (all of these)

Type AC cable is permitted in _____.

cable trays

Conductor overload protection shall not be required where the interruption of the _____ would create a hazard, such as in a material-handling magnet circuit or fire pump circuit. However, short-circuit protection is required.

circuit

Each multiwire branch circuit shall be provided with a means that will simultaneously disconnect all ___________________ conductors at the point where the branch circuit originates.

circuit

For grounded systems, electrical equipment and other electrically conductive material likely to become energized shall be installed in a manner that creates a _____ from any point on the wiring system where a ground fault may occur to the electrical supply source.

circuit facilitating the operation of the overcurrent device, low-impedance circuit, and circuit capable of safely carrying the ground-fault current likely to be imposed on it (all of these)

When ungrounded circuit conductors are increased in size to account for voltage drop, the wire-type equipment grounding conductor shall be proportionately increased in size according to the increase in size of the ungrounded conductors using their _____.

circular mil area

Conductor sizes are expressed in American Wire Gage (AWG) or _____________.

circular mils

Unused openings, other than those intended for the operation of equipment, those intended for mounting purposes, or those permitted as part of the design for listed equipment, shall be ____________________.

closed to afford protection substantially equivalent to the wall of the equipment

Frames of electric ranges, wall-mounted ovens, counter-mounted cooking units, _____, shall be connected to the equipment grounding conductor.

clothes dryer

Extreme _____ may cause PVC conduit to become brittle, and therefore more susceptible to damage from physical contact.

cold

LFMC shall not be required to be secured or supported where fished between access points through _____ spaces in finished buildings or structures and supporting is impractical.

concealed

Unbroken lengths of electric nonmetallic tubing shall not be required to be secured where fished between access points for _____ work in finished buildings or structures and securing is impractical.

concealed

Bare or covered aluminum or copper-clad aluminum grounding electrode conductors without an extruded polymeric covering shall not be installed where subject to corrosive conditions or be installed in direct contact with _____.

concrete

In accordance with Article 310, temperature correction and adjustment factors are permitted to be applied to the ampacity for the temperature rating of the _____, if the corrected and adjusted ampacity does not exceed the ampacity for the temperature rating of the termination in accordance with the provisions of 110.14(C).

conductor

The temperature rating associated with the ampacity of a _____________ shall be selected and coordinated so as not to exceed the lowest temperature rating of any connected termination, conductor, or device.

conductor

Raceways entering from outside shall be sealed with a product identified for use with the _____ insulation.

conductor or cable

The next higher standard rating overcurrent device above the ampacity of the ungrounded conductors being protected shall be permitted to be used, provided the _____.

conductors being protected are not part of a branch circuit supplying more than one receptacle for cord-and-plug-connected portable loads, the ampacity of the conductors does not correspond with the standard ampere rating of a fuse or circuit breaker, and the next higher standard rating selected does not exceed 800A (all of these)

The ampacities specified in Table 310.16 are based on _____.

conductors rated 60°C, 75°C, or 90°C; and ambient temperature of 86°F, and no more than three current-carrying conductors (all of these)

Conductors in raceways shall be _____ between outlets, boxes, devices, and so forth.

coninuous

Where electrical conductor material is not specified, the material and sizes given in the NEC shall apply to _________________ conductors.

copper

Grounding electrode conductors shall be installed in one continuous length without a splice or joint, unless spliced by _____.

connecting together sections of a busbar, irreversible compression-type connectors listed as grounding and bonding equipment, or the exothermic welding process (any of these)

Equipment and devices shall only be permitted within ducts or plenum chambers specifically fabricated to transport environmental air if necessary for their direct action upon, or sensing of, the _____.

contained air

Raceways, cable armors, and cable sheaths shall be _____ between cabinets, boxes, fittings, or other enclosures or outlets.

continuous

Where a building is designed and constructed to comply with an energy code adopted by the local authority, the lighting load is permitted to be calculated using the unit values specified in the energy code if a _____.

continuous power monitoring system is installed, power monitoring system is installed with alarm values to alert personnel when the lighting load exceeds the energy code values and can provide to automatically reduce the connected load, continuous load multiplier of 125 percent is applied (all of these)

The grounding electrode conductor shall be permitted to be run to any _____ available in the grounding electrode system.

convenient grounding electrode

Guest rooms or guest suites provided with permanent provisions for _____ shall have receptacle outlets installed in accordance with all of the applicable requirements for a dwelling unit in accordance with 210.52.

cooking

Conductors of dissimilar metals shall not be intermixed in a terminal or splicing connector where physical contact occurs between dissimilar conductors (such as ________________ and aluminum, copper and copper-clad aluminum) Unless the device is identified for the purpose and conditions of use.

copper

A separately derived ac system supply-side bonding jumper shall be installed to the first disconnecting means enclosure and it is not required to be larger than the _____.

derived phase conductor

A listed exposed work cover shall be permitted to be the grounding and bonding means for a surface-mounted metal box if the _____.

device is attached to the cover with at least two fasteners that are permanent (such as a rivet) or have a thread locking or screw or nut locking means, and the cover mounting holes are located on a flat non-raised portion of the cover

Additional services shall be permitted for different voltages, frequencies, or phases, or for different uses, such as for _____.

different rate schedules

A circuit breaker with a slash rating, such as 120/240V or 480Y/277V, shall be permitted to be applied in a solidly grounded circuit where the nominal voltage of any conductor to ground _____ the lower of the two values of the circuit breaker's voltage rating and the nominal voltage between any two conductors _____ the higher value of the circuit breaker's voltage rating.

does not exceed

A multioutlet assembly can be installed in _____ locations.

dry

No wiring of any type shall be installed in ducts used to transport _____.

dust, flammable vapors, and loose stock (all of these)

Outlet boxes mounted in the ceilings of habitable rooms of _____, in a location acceptable for the future installation of a ceiling-suspended (paddle) fan, shall be listed for the sole support of ceiling-suspended paddle fans.

dwelling occupancies

Overcurrent devices are not permitted to be located in the bathrooms of _____.

dwelling units, dormitories, and guest rooms or guest suites of hotels or motels (all of these)

A 15A or 20A, 125V receptacle outlet shall be located within 25 ft of heating, air-conditioning, and refrigeration equipment for _____ occupancies.

dwelling, commercial, and industrial (all of these)

For ungrounded systems, noncurrent-carrying conductive materials enclosing electrical conductors or equipment shall be connected to the _____ in a manner that will limit the voltage imposed by lightning or unintentional contact with higher-voltage lines.

earth

Handhole enclosure covers shall have an identifying mark or logo that prominently identifies the function of the enclosure, such as \"_____.\"

electric

The dwelling unit appliance load demand factor of 75 percent for four or more appliances shall not apply to _____.

electric cooking equipment, clothes dryers, and space heating equipment (all of these)

When service equipment is required to be field marked with available fault current, the value of available fault current for use in determining appropriate minimum short-circuit current ratings of service equipment is available from ___________ in published or other forms.

electric utilities

Electrical equipment secured to and in _____ contact with a metal rack or structure provided for its support shall be permitted to be considered as being connected to an equipment grounding conductor if the metal rack or structure is connected to an equipment grounding conductor by one of the means indicated in 250.134.

electrical

Metal wireways shall be constructed and installed so that _____ continuity of the complete system are assured.

electrical and mechanical

Bonding shall be provided where necessary to ensure _____ and the capacity to conduct safely any fault current likely to be imposed.

electrical continuity

ENT and fittings can be _____, provided fittings identified for this purpose are used.

encased in poured concrete, embedded in a concrete slab on grade where the tubing is placed on sand or approved screenings, or for wet locations indoors (any of these)

Direct-buried conductors, cables, or raceways, which are subject to movement by settlement or frost, shall be arranged to prevent damage to the _____ or to equipment connected to the raceways.

enclosed conductors

Working space distances for enclosed love parts shall be measures from the __________ of equipment or apparatus if the live parts are enclosed.

enclosure or opening

Conductors of ac and dc circuits, rated 1,000V or less, shall be permitted to occupy the same _____ provided that all conductors have an insulation rating equal to the maximum voltage applied to any conductor.

enclosure, cable, or raceway (any of these)

Where the lighting load for a non-dwelling building is designed and constructed to comply with an energy code adopted by the local authority, the lighting load shall be permitted to be calculated using the unit values specified in the _____.

energy code

A(An) _____ shall be used to connect the grounding terminal of a grounding-type receptacle to a metal box that is connected to an equipment grounding conductor.

equipment bonding jumper

Surface metal raceway enclosures providing a transition from other wiring methods shall have a means for connecting a(an) _____ conductor.

equipment grounding

The arrangement of grounding connections shall ensure that the disconnection or the removal of a luminaire, receptacle, or other device fed from the box does not interrupt the electrical continuity of the _____ conductor(s) providing an effective ground-fault current path.

equipment grounding

Auxiliary grounding electrodes can be connected to the _____.

equipment grounding conductor

Metal enclosures shall be permitted to be used to connect bonding jumpers or _____, or both, together to become a part of an effective ground-fault current path.

equipment grounding conductors

Working space for equipment operating at 1000 volts, nominal, or less to ground and likely to require ______________________ while energized.

examination, adjustment, servicing, or maintenance (all of these)

Electrical equipment, such as switchboards, switchgear, panelboards, industrial control panels, meter socket enclosures, and motor control centers, that is in other than dwelling units and is likely to require ______________________ while energized, shall be field or factory marked to warn qualified persons of potential electric arc flash hazards.

examination, adjustment, servicing, or maintenance (any of these)

Concrete-encased electrodes of _____ shall not be required to be part of the grounding electrode system where the steel reinforcing bars or rods aren't accessible for use without disturbing the concrete.

existing buildings or structures

In installations within walls or ceilings constructed of wood or other combustible surface material, boxes, plaster rings, extension rings, or listed extenders shall _____.

extend to the finished surface or project therefrom

A separate water piping bonding jumper shall be required if the metal frame of a building or structure is used as the grounding electrode for a separately derived system and is bonded to the metal water piping in the area served by the separately derived system.

false

An encased or buried connection to a concrete-encased, driven, or buried grounding electrode shall be accessible.

false

Cable tray systems shall not have mechanically discontinuous segments between cable tray runs or between cable tray runs and equipment.

false

EMT shall not be permitted as an equipment grounding conductor.

false

ENT shall be permitted for direct earth burial unless used with fittings listed for this purpose.

false

If exposed structural metal that is interconnected to form the building frame exists in the area served by the separately derived system, it shall be bonded to the grounded conductor of each separately derived system and each bonding jumper shall be sized in accordance with Table 250.102(C)(1) based on the largest grounded conductor of the service.

false

In a 3-wire circuit consisting of two phase conductors and the neutral conductor of a 4-wire, three-phase, wye-connected system, the common conductor is not a current-carrying conductor and not subject to the adjustment provisions of 310.15(C)(1).

false

In addition to the insulated conductors, Type NM cable shall have an insulated equipment grounding conductor.

false

Listed liquidtight flexible metal conduit (LFMC) is acceptable as an equipment grounding conductor when it terminates in listed fittings and is protected by an overcurrent device rated 60A or less for trade sizes 3/8 through 1/2.

false

Metal enclosures and raceways for other than service conductors shall be connected to the neutral conductor.

false

At Type AC cable terminations, a(an) _____ shall be provided to protect wires from abrasion.

fitting

Where raceways or cables enter above the level of uninsulated live parts of cabinets, cutout boxes, and meter socket enclosures in a wet location, a(an) _____ shall be used.

fitting listed for wet location

Article 348 covers the use, installation, and construction specifications for flexible metal conduit (FMC) and associated _____.

fittings

The radius of the curve of the inner edge of any bend, during or after installation, shall not be less than _____ times the diameter of Types USE or SE cable.

five

ENT is composed of a material resistant to moisture and chemical atmospheres and is _____.

flame retardent

A surface extension can be made from the cover of a box where the cover is designed so it is unlikely to fall off or be removed if its securing means becomes loose. The wiring method shall be _____ for an approved length that permits removal of the cover and provides access to the box interior and arranged so that any grounding continuity is independent of the connection between the box and cover.

flexible

The upper end of the electrode shall be _____ unless the aboveground end and the grounding electrode conductor attachment are protected against physical damage as specified in 250.10.

flush with or below ground level

A run of IMC shall not contain more than the equivalent of _____ quarter bend(s) between pull points such as conduit bodies and boxes.

four

A run of RMC shall not contain more than the equivalent of _____ quarter bend(s) between pull points such as conduit bodies and boxes.

four

Equipment grounding conductor(s), and not more than _____ fixture wires smaller than 14 AWG shall be permitted to be omitted from the calculations where they enter the box from a domed luminaire or similar canopy and terminate within that box.

four

When sizing a feeder for the fixed appliance loads in dwelling units, a demand factor of 75 percent of the total nameplate ratings can be applied if there are _____ or more appliances fastened in place on the same feeder.

four

Horizontal runs of RMC supported by openings through _____ at intervals not exceeding 10 ft and securely fastened within 3 ft of termination points shall be permitted.

framing members

As defined by 230.95, the rating of the service disconnect shall be considered to be the rating of the largest _____ that can be installed or the highest continuous current trip setting for which the actual overcurrent device installed in a circuit breaker is rated or can be adjusted.

fuse

Where practicable, contact of dissimilar metals shall be avoided in an IMC raceway installation to prevent the possibility of _____.

galvanic action

For the purposes of determining box fill, each device or utilization equipment in the box which is wider than a single device box counts as two conductors for each _____ required for the mounting.

gang

GFCI protection shall be provided for all 15A and 20A, 125V, single-phase receptacles installed in a dwelling unit _____________.

garage and laundry area

One or more insulated conductors in a multiconductor cable, at the time of installation, shall be permitted to be permanently identified as equipment grounding conductors at each end and at every point where the conductors are accessible by coloring the insulation _____.

green

Where a main bonding jumper is a screw only, the screw shall be identified with a(an) _____ that shall be visible with the screw installed.

green finish

Conductors with insulation or individual covering that is _____, or otherwise identified by this section shall not be used for ungrounded or grounded circuit conductors.

green or green with one or more yellow stripes

Ungrounded alternating-current systems from 50V to 1,000V or less that are not required to be grounded in accordance with 250.21(B) shall have _____.

ground detectors installed for ac systems operating at not less than 120V and at 1,000V or less, and have the ground detection sensing equipment connected as close as practicable to where the system receives its supply

Concrete, brick, or tile walls are considered _____, as applied to working space requirements.

grounded

It shall be permissible to ground meter enclosures immediately adjacent to the service disconnecting means to the _____ circuit conductor on the load side of the service disconnect, if service ground-fault protection is not provided.

grounded

Where an alternating-current system operating at 1,000V or less is grounded at any point, the _____ conductor(s) shall be routed with the ungrounded conductors to each service disconnecting means and shall be connected to each disconnecting means grounded conductor(s) terminal or bus.

grounded

For a separate building or structure supplied by a separately derived system when overcurrent protection is not provided for the supply conductors to the building/structure as permitted by 240.21(C)(4), the installation shall be _____ in accordance with 250.30(A).

grounded and bonded

Conductors that are intended for use as ungrounded conductors, whether used as a single conductor or in multiconductor cables, shall be finished to be clearly distinguishable from _____ conductors.

grounded and equipment grounding

In multiwire branch circuits, the continuity of the _____ shall not be dependent upon the device connections.

grounded conductor

The screw shell of a luminaire or lampholder shall be connected to the ___________.

grounded conductor

Metal water piping system(s) shall be bonded to the _____, or to one or more grounding electrodes used, if the grounding electrode conductor or bonding jumper to the grounding electrode is of sufficient size.

grounded conductor at the service, service equipment enclosure, and grounding electrode conductor if of sufficient size (any of these)

The building or structure grounding electrode system shall be used as the _____ electrode for the separately derived system.

grounding

A separate bonding jumper to the building structural metal shall not be required if the metal frame of a building or structure is used as the _____ for the separately derived system.

grounding electrode

The frame of a portable generator shall not be required to be connected to a(an) _____ if the generator only supplies equipment mounted on the generator, cord-and-plug-connected equipment using receptacles mounted on the generator, or both.

grounding electrode

The frame of a vehicle-mounted generator shall not be required to be connected to a(an) _____ if the generator only supplies equipment mounted on the vehicle or cord-and-plug-connected equipment, using receptacles mounted on the vehicle.

grounding electrode

Where the main bonding jumper is a wire or busbar and is installed from the grounded conductor terminal bar or bus to the equipment grounding terminal bar or bus in the service equipment, the _____ shall be permitted to be connected to the equipment grounding terminal, bar, or bus to which the main bonding jumper is connected.

grounding electrode conductor k

Buildings or structures supplied by multiple services or feeders shall use the same _____ to ground enclosures and equipment in or on that building.

grounding electrode system

The two to six disconnects for a disconnecting means for a building supplied by a feeder shall be _____.

grouped

When the service contains two to six service disconnecting means, they shall be _____.

grouped

When normally enclosed live parts are exposed for inspection or servicing, the working space, if in a passageway or general open space, shall be suitably _____.

guarded

120V, single-phase, 15A and 20A branch circuits supplying outlets and devices installed in _________ of hotels and motels shall be protected by any of the means described in 210.12(A)(1) through (6).

guest rooms

When calculating a feeder or service load for existing installations, if the maximum demand data for a 1-year period is not available, the calculated load shall be permitted to be based on the maximum demand (the _____ kilowatts reached and maintained for a 15-minute interval continuously recorded over a minimum 30-day period using a recording ammeter or power meter connected to the highest loaded phase of the feeder or service, based on the initial loading at the start of the recording.

highest average

Circuit breaker enclosures shall be permitted to be installed _____ where the circuit breaker is installed in accordance with 240.81

horizontally

Article 200 provides the requirments for _____________.

identification of terminals, grounded conductors in premises wiring systems, and identification of grounded conductors (all of these)

Conductor terminal and splicing devices shall be ________ for the conductor material and that shall be properly installed and used.

identified

Connectors and terminals for conductors more finely stranded than Class B and Class C, as shown in table 10 of Chapter 9, shall be _________ for the specific conductor class or classes.

identified

Equipment not _________ for outdoor use or identified for indoor use only such as "dry locations" or "indoor use only", shall be protected against damage from the wether during construction.

identified

Spare or unused raceways shall be sealed with sealants _____ for use with the cable insulation, conductor insulation, bare conductor, shield, or other components.

identified

Where conduits are used as service masts, hubs shall be _____ for use with service-entrance equipment.

identified

Underground cable and conductors installed under a building shall be _____.

in a raceway

Type UF cable shall not be used _____.

in any hazardous (classified) location except as otherwise permitted in this Code, in poured cement, concrete, or aggregate, where exposed to direct rays of the sun, unless identified as sunlight resistant (all of these)

All single-phase receptacles rated 150V to ground or less, 50A or less, and three-phase receptacles rated 150V to ground or less, 100A or less installed _______________ of commercial occupancies shall have GFCI protection.

in bathrooms, on rooftops, and in kitchens (all of these)

Each direct-buried single conductor cable shall be located _____ in the trench to the other single conductor cables in the same parallel set of conductors, including equipment grounding conductors.

in close proximity

Where single conductor cables comprising each phase, neutral, or grounded conductor of a circuit are connected in parallel in a cable tray, the conductors shall be installed _____, to prevent current imbalance in the paralleled conductors due to inductive reactance.

in groups consisting of not more than one conductor per phase, neutral, or grounded conductor

The 125 percent multiplier for a continuous load as specified in 210.20(A) _____ included when using the unit loads in table 220.12 for calculating the minimum lighting load for a specified occupancy.

A rebar-type concrete-encased electrode installed in accordance with 250.52(A)(3) with an additional rebar section extended from its location within the concrete foundation or footing to an accessible location that is not subject to corrosion is permitted for connection of grounding electrode conductors and bonding jumpers providing the rebar _____.

is continuous or effectively connected to the grounding electrode rebar, extension is not in direct contact with the earth without corrosion protection, and is not used as a conductor to interconnect the grounding electrode system (all of these)

In other than dwelling units, GFCI protection is required for receptacles installed in __________________.

kitchens, unfinished areas of basements, and laundry areas (all of these)

When a single equipment grounding conductor is used for multiple circuits in the same raceway, cable, or cable tray, the single equipment grounding conductor shall be sized according to the _____.

largest overcurrent device protecting the circuit conductors

When applying the demand factors of Table 220.56, the feeder or service demand load shall not be less than the sum of the _____.

largest two kitchen equipment loads

All 15A and 20A, 125V, single-phase receptacles installed in ___________ of dwelling units shall have GFCI protection.

laundry areas, finished basements, or unfinished basements (all of these)

Parallel conductors shall have the same _____.

length, material, and size in circular mil area (all of these)

Grounded electrical systems shall be connected to earth in a manner that will _____.

limit voltages due to lightning, line surges, or unintentional contact with higher-voltage lines and stabilize the voltage-to-ground during normal operation

Multiwire branch circuits shall supply only __________.

line-to-neutral loads

Cable ties used to secure and support LFNC shall be _____ for the application and for securing and supporting.

listed

Cable ties used to securely fasten ENT shall be _____ for the application and for securing and supporting.

listed

Floor boxes _____ specifically for the application shall be used for receptacles located in the floor.

listed

Where used to secure or support LFNC, cable ties shall be _____ for the application.

listed

Cable ties used to securely fasten flexible metal conduit shall be _____ for securement and support.

listed and identified

Individual meter socket enclosures shall not be considered service equipment but shall be _____ for the voltage and ampacity of the service.

listed and rated

Where Type NM cables pass through cut or drilled slots or holes in metal members, the cable shall be protected by _____ which are installed in the opening prior to the installation of the cable and which securely cover all metal edges.

listed bushings or grommets

Threadless couplings and connectors used with RMC in wet locations shall be _____.

listed for wet locations

The grounding conductor connection to the grounding electrode shall be made by _____.

listed lugs, exothermic welding, and listed pressure connectors (any of these)

Raceways on exteriors of buildings or other structures shall be arranged to drain and shall be _____ for use in wet locations.

listed or approved

The service disconnecting means rated 1,000V or less shall be marked to identify it as being suitable for use as service equipment and shall be _____.

listed or field evaluated

Where branch-circuit wiring in a dwelling unit is modified, replaced, or extended in any of the areas specified in 210.12(A), the branch circuit shall be protected by a __________.

listed outlet branch-circuit type AFCI located at the first receptacle outlet of the existing branch circuit

Equipment grounding conductors, grounding electrode conductors, and bonding jumpers shall be connected by _____.

listed pressure connectors, terminal bars, and exothermic welding (any of these)

A grounded conductor shall not be connected to normally noncurrent-carrying metal parts of equipment on the _____ side of the system bonding jumper of a separately derived system except as otherwise permitted in Article 250.

load

For adjustable-trip circuit breakers, restricted access is defined as _____.

located behind bolted equipment enclosure doors, located behind locked doors accessible only to qualified personnel, or a password protected, with password accessible only to qualified personnel (any of these)

Unless identified for use in the operating environment, no conductors or equipment shall be ____________________ having deteriorating effect on the conductors or equipment.

located in damp or wet locations, exposed to fumes, vapors, liquids, or gases, or exposed to excessive temperatures (all of these)

All switchboards, panelboards, and motor control centers shall be _____.

located in dedicated spaces and protected from damage

Only _____ circuit breakers shall be permitted to be reconditioned.

low-voltage power, medium-voltage power, and high-voltage (all of these)

For a grounded system, an unspliced _____ shall be used to connect the equipment grounding conductor(s) and the service disconnect enclosure to the grounded conductor of the system within the enclosure for each service disconnect.

main bonding jumper

Where an ac system operating at 1,000V or less is grounded at any point, a(an) _____ shall connect the grounded conductor(s) to each service disconnecting means enclosure.

main bonding jumper

Bends in LFNC shall be made so that the conduit will not be damaged and the internal diameter of the conduit will not be effectively reduced. Bends can be made _____.

manually without auxiliary equipment

Supplementary overcurrent protection _____.

may be used to protect internal circuits of equipment

In judging equipment for approval, considerations such as _________ shall be evaluated.

mechanical strength, wire-bending space, and arcing effects (all of these)

Underground raceways and cable assemblies entering a handhole enclosure shall extend into the enclosure, but they are not required to be _____.

mechanically connected to the handhole enclosure

_____ shall be permitted to support the wiring methods and equipment permitted to be used in other spaces used for environmental air (plenum).

metal cable tray systems

Ground clamps and fittings that are exposed to physical damage shall be enclosed in _____ or equivalent protective covering.

metal or wood

Article 386 covers the use, installation, and construction specifications for surface _____ and associated fittings.

metal raceways

The common grounding electrode conductor installed for multiple separately derived systems shall be permitted to be a _____ pipe that complies with 250.68(C)(1).

metal water

To prevent the entrance of _____, service-entrance conductors shall be connected to the service-drop or overhead service conductors either below the level of the service head or below the level of the termination of the service-entrance cable sheath.

moisture

Type UF cable shall not be used in _____.

motion picture studios, storage battery rooms, hoistways (all of these)

Where a building or structure contains more than one service disconnect in separate enclosures, grounding electrode conductor connections shall be permitted to be _____.

multiple individual grounding electrode conductors, one grounding electrode conductor at a common location, or a common grounding electrode conductor and taps (any of these)

Reconditioned equipment shall be marked with the _____________________ by which the organization responsible for reconditioning the electrical equipment can be identified, along with the date of the reconditioning.

name, trademark, or other descriptive marking (any of these)

The conductors used to connect the surge protective device to the line or bus and to ground shall not be any longer than _____ and shall avoid unnecessary bends.

necessary

Conductors installed in nonmetallic raceways run underground shall be permitted to be arranged as _____ installations. The raceways shall be installed in close proximity, and the conductors shall comply with 300.20(B).

neutral, grounded conductor, and isolated phase (all of these)

For the continuity of equipment grounding conductors and attachment in boxes, a connection used for _____ shall be made between the metal box and the equipment grounding conductor(s) in accordance with 250.8.

no other purpose

Acceptable industry practices for equipment labeling are described in NFPA 70E, Standard for Electrical Safety in the Workplace. This standard provides specific criteria for developing arc-flash labels for equipment that provides ___________, and so forth.

nominals system voltage and incident energy levels, arc-flash boundaries, and minimum required levels of personal protective equipment (all of these)

At existing buildings or structures, an intersystem bonding termination is not required if other acceptable means of bonding exists. An external accessible means for bonding communications systems together can be by the use of a(an) _____.

nonflexible metallic raceway, exposed grounding electrode conductor, and connection to a grounded raceway or equipment approved by the authority having jurisdiction (any of these)

On a 4-wire, three-phase wye circuit where the major portion of the neutral load consists of _____ loads, the neutral conductor shall be considered a current-carrying conductor.

nonlinear

There shall be no reduction in the size of the neutral or grounded conductor on _____ loads supplied from a 4-wire, wye-connected, three-phase system.

nonlinear

Bends in FMC shall be made so that the conduit is not damaged and the internal diameter of the conduit is _____.

not effectively reduced

Where a portion of a feeder is connected at both its supply and load ends to separately installed pressure connections in accordance with 110.14(C)(2), it shall be permitted to have an allowable ampacity _____ the sum of the continuous load plus the noncontinuous load.

not less than

Where cables or nonmetallic raceways are installed through bored holes in joists, rafters, or wood members, holes shall be bored so that the edge of the hole is _____ the nearest edge of the wood member.

not less than 1 1/4 in. from

Where the supply conductors are larger than 1,100 kcmil copper or 1,750 kcmil aluminum, the main bonding jumper shall have an area that is _____ the area of the largest phase conductor when of the same material.

not less than 12 1/2 percent of

Running threads shall not be used on IMC for connection at couplings.

true

For attics and underfloor spaces, utility rooms, and basements in all occupancies, at least _____ lighting outlet(s) containing a switch or controlled by a wall switch shall be installed where these spaces are used for storage or contain equipment requiring servicing.

one

If multiconductor cables are installed in parallel in the same raceway, auxiliary gutter, or cable tray, _____ equipment grounding conductor(s) that is(are) sized in accordance with 250.122 shall be permitted in combination with the equipment grounding conductors provided within the multiconductor cables and shall all be connected together.

one

Where a box is provided with _____ or more securely installed barriers, the volume shall be apportioned to each of the resulting spaces; each barrier, if not marked with its volume, shall be considered to take up 1/2 cu in. if metal, and 1 cu in. if nonmetallic.

one

Where a metal wireway houses and protects conductors, and where single conductor cables comprising each phase, neutral, or grounded conductor of an alternating-current circuit are connected in parallel as permitted in 310.10(G), the conductors shall be installed in groups consisting of not more than _____ conductor(s) per phase, neutral, or grounded conductor to prevent current imbalance in the paralleled conductors due to inductive reactance.

one

Where insulated conductors are deflected within a metal wireway, the wireway shall be sized to meet the bending requirements corresponding to _____ wire per terminal in Table 312.6(A).

one

Where the box is mounted on the surface, direct metal-to-metal contact between the device yoke and the box shall be permitted to ground the receptacle to the box if at least _____ of the insulating washers of the receptacle is (are) removed.

one

Type NM and Type NMC cables shall be permitted in _____, except as prohibited in 334.12.

one- and two-family dwellings and their attached/detached garages and storage buildings, multifamily dwellings permitted to be of Types III, IV, and V construction, and other structures permitted to be of Types III, IV, and V construction (any of these)

On a 4-wire, delta-connected system where the midpoint of one phase winding is grounded, only the conductor or busbar having the higher phase voltage to ground shall be durable and permanently marked by an outer finish that is ___________ in color.

orange

Where correction or adjustment factors are required by 310.15(B) or (C), for single-phase feeder conductors installed for _____ dwellings, they shall be permitted to be applied to the ampacity associated with the temperature rating of the conductor.

one-family, the individual dwelling unit of two-family, or the individual dwelling units of multifamily (all of these)

Wiring methods and cabling systems, listed for use in other spaces used for environmental air (plenums), shall be permitted to be installed in ducts specifically fabricated for environmental air-handling purposes _____.

only if necessary to connect to equipment or devices associated with the direct action upon or sensing of the contained air, if the total length of such wiring methods or cabling systems does not exceed 4 ft, and where illumination is necessary to facilitate maintenance and repair (any of these)

The general requirement for each service drop, set of overhead service conductors, set of underground service conductors, or service lateral is that it shall supply _____ set(s) of service-entrance conductors.

only one

Circuit breakers shall _____ all ungrounded conductors of the circuit both manually and automatically unless specifically permitted otherwise.

open

Overcurrent protection for conductors and equipment is provided to _____ the circuit if the current reaches a value that will cause an excessive or dangerous temperature in conductors or conductor insulation.

open

For equipment rated 800A or more that contains overcurrent devices, switching devices, or control devices; and where the entrance to the working space has a personnel door(s) less than 25 ft from the nearest edge of the working space, the door shall _____.

open in the direction of egress and be equipped with listed panic hardware

On a three-phase, 4-wire, delta-connected service where the midpoint of one phase winding is grounded, the service conductor having the higher phase voltage-to-ground shall be durably and permanently marked by an outer finish that is _____ in color, or by other effective means, at each termination or junction point.

orange

Cable wiring methods shall not be used as a means of support for _____.

other cables, raceways, or nonelectrical equipment (all of these)

The space above a hung ceiling used for environmental air-handling purposes is an example of _____, and the wiring limitations of _____ apply.

other space used for environmental air (plenum), 300.22(C)

120V, single-phase, 15A and 20A branch circuits supplying _____ installed in dormitory unit bedrooms, living rooms, hallways, closets, bathrooms, and similar rooms shall be protected by any of the means described in 210.12(A)(1) through (6).

outlets and devices

Cut ends of ENT shall be trimmed inside and _____ to remove rough edges.

outside

Branch circuits shall be rated in accordance with the maximum permitted ampere rating of the _____.

overcurrent device

The __________, and other characteristics of the circuit to be protected shall be selected and coordinated to permit the circuit protective devices used to clear a fault to do so without extensive damage to the electrical equipment of the circuit.

overcurrent protective devices, total impedance, and equipment short-circuit current rating (all of these)

Vegetation such as trees shall not be used for support of _____.

overhead conductor spans

Bonding jumpers for service raceways shall be used around impaired connections such as _____.

oversized concentric knockouts, oversized eccentric knockouts, or reducing washers (any of these)

Internal parts of electrical equipment, including busbars, wiring terminals, insulators, and other surfaces, shall not be damaged or contaminated by foreign materials such as _____________________ or corrosive residues.

paint, plaster, cleaners, abrasives (any of these)

If a building or structure is supplied by a feeder from an outdoor separately derived system, a system bonding jumper at both the source and the first disconnecting means shall be permitted if doing so does not establish a(an) _____ path for the grounded conductor.

parallel

Service conductors supplying a building or other structure shall not _____ of another building or other structure.

pass through the interior

The number and size of conductors permitted in a raceway is limited to _____.

permit heat to dissipate and prevent damage to insulation during insulation and removal of conductors (all of these)

NFPA 70E, Standard for Electrical Safety in the Workplace, provides guidance, such as determining the severity of potential exposure, planning safe work practices, arc-flash labeling, and selecting ____________.

personal protective equipment

Conductors in ferrous metal raceways or enclosures shall be arranged so as to avoid heating the surrounding ferrous metal by alternating-current induction. To accomplish this, the _____ conductor(s) shall be grouped together.

phase, grounded, and equipment grounding (all of these)

Where a building has multiple feeders, a permanent _____ shall be installed at each feeder disconnect location denoting all other services and feeders and the area served by each.

plaque or directory

If a single rod, pipe, or _____ grounding electrode has a resistance to earth of 25 ohms or less, the supplemental electrode shall not be required.

plate

When the service disconnecting means is a power-operated switch or circuit breaker, it shall be able to be opened by hand in the event of a _____.

power supply failure

Connection of conductors to terminal parts shall ensure a thoroughly good connection without damaging the conductors and shall be made by means of ___________________.

pressure connectors, solder lugs, or splices to flexible leads (any of these)

When EMT is installed in wet locations, all supports, bolts, straps, and screws shall be _____.

protected against corrosion

Short sections of raceways used for _____ shall not be required to be installed complete between outlet, junction, or splicing points.

protection of cables from physical damage

All _____ shall be provided with covers compatible with the box or conduit body construction and suitable for the conditions of use.

pull boxes, junction boxes, and conduit bodies (all of these)

When modification to the electrical installation occur that affect the maximum available fault current at the service, the maximum available fault current shall be verified or ___________ as necessary to ensure the service equipment rating are sufficient for the maximum available fault current at the line terminals of the equipment.

recalculated

Product testing, evaluation, and listing (product certification) shall be performed by ___________________.

recognized qualified electrical testing laboratories

Swimming pool structures and structural _____ [680.26(B)(1) and (B)(2)] shall not be used as a grounding electrode.

reinforcing steel

Metal wireways are sheet metal troughs with _____ for housing and protecting electric conductors and cable.

removable or hinged covers

Reconditioned circuit breakers shall be listed as "reconditioned" and the original listing mark shall be _____.

removed

Reconditioned equipment shall be identified as "reconditioned" and the original listing mark ___________.

removed

NFPA 70E, Standard for Electrical Safety in the Workplace, provides guidance, such as determining the severity of potential exposure, planning safe work practices including establishing an electrically _________ work condition, arc-flash labeling, and selecting PPE.

safe

Conduits or raceways through which moisture may contact live parts shall be _____ at either or both ends.

sealed or plugged

In ungrounded systems, electrical equipment, wiring, and other electrically conductive material likely to become energized shall be installed in a manner that creates a low-impedance circuit from any point on the wiring system to the electrical supply source to facilitate the operation of overcurrent devices should a(an) _____ fault from a different phase occur on the wiring system.

second ground

Type NM cable protected from physical damage by a raceway shall not be required to be _____ within the raceway.

secured

Flexible metal conduit shall not be required to be _____ where fished between access points through concealed spaces in finished buildings or structures and supporting is impracticable.

secured and supported

For one- and two-family dwellings, at least one receptacle outlet shall be installed in each _____.

separate unfinished portion of a basement, attaches or detached garage with electric power, and accessory building with electric power (all of these)

Cable trays can be used as a support system for _____.

service conductors, feeders, and branch circuits, communications circuits, and control and signaling circuits (all of these)

A grounded conductor shall not be connected to normally noncurrent-carrying metal parts of equipment, to equipment grounding conductor(s), or be reconnected to ground on the load side of the _____ except as otherwise permitted.

service disconnecting means

The grounding electrode conductor connection shall be made at any accessible point from the load end of the overhead service conductors, _____ to, including the terminal or bus to which the grounded service conductor is connected at the service disconnecting means.

service drop, underground service conductors, and service lateral (any of these)

Exposed structural metal interconnected to form a metal building frame that is not intentionally grounded or bonded and is likely to become energized, shall be bonded to the _____.

service equipment enclosure or building disconnecting means, grounded conductor at the service, and grounding electrode conductor where of sufficient size (any of these)

Overhead service-entrance cables shall be equipped with a _____.

service head

Conductors other than service conductors shall not be installed in the same _____ in which the service conductors are installed.

service raceway or cable

Metal wireways shall not be permitted for _____.

severe corrosive environments

Stainless steel and aluminum fittings and enclosures shall be permitted to be used with galvanized steel RMC, and galvanized steel fittings and enclosures shall be permitted to be used with aluminum RMC where not subject to _____.

severe corrosive influences

Lightning protection system ground terminals _____ bonded to the building or structure grounding electrode system.

shall be

In a 3-wire circuit consisting of two phase conductors and the neutral conductor of a 4-wire, three-phase, wye-connected system, the common conductor _____ a current-carrying conductor.

shall be counted as

Each cable entering a cutout box _____.

shall be secured to the cutout box

All single-phase receptacles rated 150V to ground or less, 50A or less, and three-phase receptacles rated 150V to ground or less, 100A or less installed in other than dwelling unit garages, service bays, and similar areas shall be GFCI protected, unless located in ________________.

showrooms and vehicle exhibition halls

The identification of terminals to which a neutral conductor is to be connected shall be substantially white or ___________ in color.

silver

Cables and conductors installed exposed on the surfaces of ceiling and sidewalls shall be secured by hardware including straps, staples, cable ties, hangers, or _______________ fittings designed and installed so as not to damage the cable.

similar

The additional service disconnecting means for fire pumps, emergency systems, legally required standby, or optional standby services, shall be installed remote from the one to six service disconnecting means for normal service to minimize the possibility of _____ interruption of supply.

simultaneous

There shall be no more than _____ disconnects installed for each service or for each set of service-entrance conductors as permitted in 230.2 and 230.40.

six

There shall be no more than _____ switches or circuit breakers to serve as the disconnecting means for a building supplied by a feeder.

six

Where multiple feeder conductors to a building originate in the same panelboard, switchboard, or other distribution equipment, and each feeder terminates in a single disconnecting means, not more than _____ feeders shall be permitted.

six

Additional services shall be permitted for a single building or other structure sufficiently large to make two or more services necessary if permitted by _____.

special permission

Cable _____ made and insulated by approved methods can be located within a cable tray provided they are accessible, and do not project above the side rails where the splices are subject to physical damage.

splices

All _________ shall be covered with an insulation equivalent to that of the conductors or with an identified insulating device.

splices, joints, and free ends of conductors (all of these)

Short-radius conduit bodies such as capped elbows and service-entrance elbows that enclose conductors 6 AWG or smaller shall not contain _____.

splices, taps, or devices (any of these)

When combination surface metal raceways are used for both signaling and for lighting and power circuits, the different systems shall be run in separate compartments identified by _____ of the interior finish.

stamping, imprinting, or color coding (any of these)

Type NM cable can be supported and secured by _____.

staples, cable ties listed and identified for securement and support, or straps (any of these)

Type AC cable shall be supported and secured by _____.

staples, cable ties listed and identified for securement and support, straps (any of these)

For a single separately derived system, the grounding electrode conductor connects the grounded conductor of the derived system to the grounding electrode at the same point on the separately derived system where the _____ is connected.

system bonding jumper

The connection of an unspliced _____ complying with 250.28(A) through (D) shall be made at any single point on the separately derived system from the source to the first system disconnecting means or overcurrent device, or it shall be made at the source of a separately derived system that has no disconnecting means or overcurrent devices, in accordance with 250.30(A)(1)(a) or (A)(1)(b).

system bonding jumper

A conductor, other than a service conductor, that has overcurrent protection ahead of its point of supply that exceeds the ampacity permitted for similar conductors is known as a _____.

tap conductor

The _____ rating of a conductor is the maximum temperature, at any location along its length, which the conductor can withstand over a prolonged period of time without serious degradation.

temperature

Smooth-sheath Type MC cable with an external diameter not greater than 3/4 in. shall have a bending radius not less than _____ times the external diameter of the cable.

ten

Barriers shall be placed in service equipment such that no uninsulated, ungrounded service busbar or service _____ is exposed to inadvertent contact by persons or maintenance equipment while servicing load terminations.

terminal

High-impedance grounded neutral systems shall be permitted for three-phase ac systems of 480V to 1,000V where _____.

the conditions of maintenance and supervision ensure that only qualified persons service the installation, ground detectors are installed on the system, and line-to-neutral loads are not served (all of these)

Grounding electrode conductors and grounding electrode bonding jumpers in contact with _____ shall not be required to comply with 300.5 but shall be buried or otherwise protected if subject to physical damage.

the earth

Raceways, cable trays, cablebus, auxiliary gutters, cable armor, boxes, cable sheathing, cabinets, elbows, couplings, fittings, supports, and support hardware shall be of materials suitable for _____.

the environment in which they are to be installed

A meter-mounted transfer switch shall be listed and be capable of transferring _____.

the load served

For ungrounded systems, noncurrent-carrying conductive materials enclosing electrical conductors or equipment, or forming part of such equipment, shall be connected together and to the supply system grounded equipment in a manner that creates a low-impedance path for ground-fault current that is capable of carrying _____.

the maximum fault current likely to be imposed on it

Branch circuits that supply lighting units that have ballasts, transformers, autotransformers, or LED drivers shall have the calculated load based on _____ rating of the units, not to the total wattage of the lamps.

the total ampere

Cabinets, cutout boxes, and meter socket enclosures can be used for conductors feeding through, spliced, or tapping off to other enclosures, switches, or overcurrent devices where _____.

the total area of the conductors at any cross section does not exceed 40 percent of the cross-sectional area of that space, the total area of conductors, splices, and taps installed at any cross section does not exceed 75 percent of the cross-sectional area of that space, and a warning label on the enclosure identifies the closest disconnecting means for any feed-through conductors (all of these)

For a separate building or structure supplied by a feeder or branch circuit, the grounded conductor can serve as the ground-fault return path for the building/structure disconnecting means for existing installations made in compliance with previous editions of the Code as long as the installation continues to meet the condition(s) that _____.

there are no continuous metallic paths between buildings and structures, ground-fault protection of equipment is not installed on the supply side of the feeder, and the neutral conductor is sized no smaller than the larger required by 220.61 or 250.122 (all of these)

Where more than two NM cables are installed through the same bored hole in wood framing that is to be sealed with _____, the ampacity of each conductor shall be adjusted.

thermal insulation, caulk, or sealing foam (any of these)

Where more than two Type SE cables are installed in contact with _____, the ampacity of each conductor shall be adjusted in accordance with Table 310.15(C)(1).

thermal insulation, caulk, or sealing foam (any of these)

For circuits over 250 volts-to-ground, electrical continuity can be maintained between a box or enclosure where no oversized, concentric or eccentric knockouts are encountered, and a metal conduit by _____.

threadless fittings for cables with metal sheaths, double locknuts on threaded conduit (one inside and one outside the box or enclosure), and fittings that have shoulders that seat firmly against the box with a locknut on (all of these)

EMT couplings and connectors shall be made up _____.

tight

Threadless couplings and connectors used with intermediate metal conduit shall be made _____.

tight

In grounded systems, normally noncurrent-carrying electrically conductive materials that are likely to become energized shall be connected _____ in a manner that establishes an effective ground-fault current path.

together and to the electrical supply source

Ferrous metal raceways and enclosures for grounding electrode conductors shall be electrically continuous from the point of attachment to cabinets or equipment to the grounding electrode.

true

Fittings and connectors shall be used only with the specific wiring methods for which they are designed and listed.

true

Flat Type NM cables shall not be stapled on edge.

true

Horizontal runs of IMC supported by openings through framing members at intervals not exceeding 10 ft and securely fastened within 3 ft of terminations shall be permitted.

true

Mechanical elements used to terminate a grounding electrode conductor to a grounding electrode shall be accessible.

true

Metal braces used for the support of boxes shall be protected against corrosion.

true

Metal enclosures and raceways containing service conductors shall be connected to the grounded system conductor if the electrical system is grounded.

true

Metal multioutlet assemblies can pass through a dry partition, provided no receptacle is concealed in the partition and the cover of the exposed portion of the system can be removed.

true

Metal parts of cord-and-plug-connected equipment, if grounded, shall be connected to an equipment grounding conductor that terminates to a grounding-type attachment plug.

true

Metal water piping systems and structural metal that is interconnected to form a building frame shall be bonded to separately derived systems in accordance with 250.104(D)(1) through 250.104(D)(3).

true

No conductor larger than that for which the raceway is designed shall be installed in a surface metal raceway.

true

Power distribution blocks installed in metal wireways on the line side of the service equipment shall be marked "suitable for use on the line side of service equipment" or equivalent.

true

Prewired raceway assemblies shall be used only where specifically permitted in the NEC for the applicable wiring method.

true

Raceways can be used as a means of support of Class 2 circuit conductors or cables that connect to the same equipment.

true

Raceways shall be provided with expansion, expansion-deflection, or deflection fittings where necessary to compensate for thermal expansion, deflection, and contraction.

true

Raceways, cable assemblies, boxes, cabinets, and fittings shall be securely fastened in place.

true

Enclosures not over 100 cu in. having threaded entries and not containing a device shall be considered to be adequately supported where _____ or more conduits are threaded wrenchtight into the enclosure and each conduit is secured within 3 ft of the enclosure.

two

For one-family dwellings and the individual dwelling units of two-family and multifamily dwellings, single-phase feeder conductors consisting of _____ ungrounded conductor(s) and the neutral conductor from a 208Y/120V system shall be permitted to be sized in accordance with 310.12(A) through (D).

two

If a building or structure is supplied by a service or feeder with _____ or more disconnecting means in separate enclosures, the grounding electrode connections shall be made in accordance with 250.64(D)(1), 250.64(D)(2), or 250.64(D)(3).

two

The number of receptacle outlets for guest rooms in hotels and motels shall not be less than that required for a dwelling unit. These receptacles can be located to be convenient for permanent furniture layout, but at least _____ receptacle outlet(s) shall be readily accessible.

two

There shall be a minimum of _____ receptacle(s) installed outdoors at a one-family dwelling and each unit of a two-family dwelling unit that is at grade level.

two

When counting the number of conductors in a box, a conductor running through the box with an unbroken loop or coil not less than twice the minimum length required for free conductors shall be counted as _____ conductor(s).

two

Type USE cable is permitted for _____ wiring.

underground

Where a service raceway enters a building or structure from a(an) _____, it shall be sealed in accordance with 300.5(G).

underground distribution system

Each _____ service conductor shall have overload protection.

ungrounded

The white conductor within a cable can be used for a(an) __________ conductor where permanently reidentified to indicate its use as an ungrounded conductor at each location where the conductor is visible and accessible.

ungrounded

Where more than one nominal voltage system supplies branch circuits in a building, each _____ conductor of a branch circuit shall be identified by phase or line and system voltage class at all termination, connection, and splice points in compliance with 210.5(C)(1)(a) and (b).

ungrounded

The receptacle outlet for a dwelling unit bathroom shall be located on a(an) _____ adjacent to the basin or basin countertop, on the countertop, or on the side or face of the basin cabinet, and never more than 12 in. below the top of the basin or basin countertop.

wall or partition

Unbroken lengths of surface metal raceways can be run through dry _____.

walls, partitions, and floors (all of these)

Overcurrent devices shall not be located _____.

where exposed to physical damage, near easily ignitible materials, such as in clothes closets, and in bathrooms of dwelling units (all of these)

Surface metal raceways shall not be used _____.

where subject to severe physical damage, to corrosive vapors, or in hoistways (all of these)

In devices or utilization equipment with polarized connections, identification of terminals to which a neutral conductor is to be connected shall be substantially __________ or silver in color.

white

Receptacles shall have the terminal intended for connection to the grounded conductor identified by a metal or metal coating that is substantially white or silver in color or by the word "____________."

white

A main bonding jumper shall be a _____ or similar suitable conductor.

wire, bus, screw (any of these)

Power distribution blocks shall not have uninsulated live parts exposed within a(an) _____.

wireway

Field bends in PVC conduit shall be made only _____.

with bending equipment identified for the purpose

Access and _______________ shall be provided and maintained about all electrical equipment to permit ready and safe operation and maintenance of such equipment.

working space

In a 3-wire circuit consisting of two phase conductors and the neutral conductor of a 4-wire, three-phase, _____ connected system, the common conductor is a current-carrying conductor and subject to the adjustment provisions of 310.15(C)(1).

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