Master Electrician Class

Controller

is a device that governs, in some predetermined manner, the electric power delivered to the apparatus to which it is connected.

6'

outlets may be installed in a dwelling unit for specific appliance such as laundry equipment What is the maximum distance allowed between this outlet and the appliance?

Accessible (as applied to equipment)

1. Admitting close approach, not guarded by locked doors, elevation, or other effective means, is referred to as

50'

17. 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 ______ distant from the other

Not Allowed in NYC

18. When mounting a light fixture supported be EMT over a hot tub protected by GFCI must have a height of

3

2. The maximum total voltage drop on branch-circuit conductors is _______Percent

1000A

20. Ground fault protection of equipment shall be provided for solidly grounded wye electrical services of more than 150 volts-to-ground, but not exceeding 600V phase-to-phase for each service disconnecting means rated __________

conduit body

21. A separate portion of a raceway system that provides access through a removable cover to the interior of the system, defines the term ________

demand factor

27. The ________of any system is the ratio of the maximum demand of a system, or part of a system, to the total connected load of a system.

disconnecting means

29. A(n) _______is a device by which the conductors of a circuit can be disconnected from their source of supply

50%

29. Dwelling units circuits running through another dwelling unit in common areas. What percentage of change, will require it to be brought up to current code

not less than 1 1/4 in. from

3. 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.

dwelling unit

30. A_______is a single unit that provides independent living facilities for persons, including permanent provisions for living, sleeping, cooking, and sanitation.

1,000,000 CM

6. A round bus-bar one inch in diameter, has a circular mil area of:

12Ft

6. Overhead feeder conductors shall have a minimum __________ vertical clearance over residential property and driveways, as well as those commercial areas not subject to truck traffic, where the voltage is limited to 300 volts-to-ground.

four times as great

7. A copper wire with twice the diameter of another wire has a current carrying capacity:

10 AWG Copper

7. Service Lateral conductors that supply power to limited loads of a single branch circuit-such as a small polyphase power, controlled water heaters, and similar loads-shall not be smaller than

Supported

9. Open conductors shall be ______ on glass or porcelain knobs, racks, brackets, or stain insulators

Energy

A watt-hour meter is used to measure

18"

At least one receptacle outlet shall be installed within of the top of a show window for each 12 linear feet measured horizontally across its length

1

At least_____ 125 V, single phase, 15 A or 20 A, duplex with ground-fault circuit interrupter receptacle shall be provided in each elevator machine room and elevator machinery space.

connected

Bonded can be described as to establish electrical continuity and and conductivity

36"

For switchboards that are not totally enclosed, a space of ____ or more shall be provided between toe top of the switchboard and any combustible ceiling

0.001 inch

One circular mil is the area of a circle whose diameter is:

4"

Open conductors installed outside shall be separated from open conductors of other circuits or systems by not less than .

10 feet above grade level

Open conductors which are not service entrance cables shall not be installed less than which of the following

24"

Outdoor electrical vehicle charging sites, unless specifically listed for the purpose and location, the coupling means of the electric vehicle supply equipment shall be stored or located at a height of not less than ______ and not more than 4ft.

B

Panel boards 'supplied by a three-phase; 4-wire, delta-connected system shall have the phase with higher voltage to ground (high-leg) connected to the phase

18"

Receptacle outlets in floors shall not be counted as part of the required number of receptacle outlets unless located within ______ of the wall

3'

Service conductors installed as unjacketed multiconductor cable shall have a minimum clearance of ______from window s that are designed to be opened, doors, porches, stairs, fire escapes, or similar locations.

branch circuit

That portion of a wiring system extending beyond the final overcurrent device is called the:

True

The Code isn't a design specification standard or instruction manual for the untrained and unqualified

electrical conductors and equipment, optical fiber cables within or on public and private buildings, outside conductors and equipment on the premises

The NEC applies to the installation of

True

The NEC does not cover electrical installations in ships, watercraft, railway rolling stock, aircraft, or automotive vehicles.

for the practical safeguarding of persons and property

The NEC is ______

main bonding

The connection between the grounded conductor and the equipment grounding conductor at the service is accomplished by installing a(n)_______ jumper.

1O ohms

The equivalent value of 0.1 mho is

0.622"

The internal diameter of 1/2"EMT is:

4%

The maximum voltage drop from Service point to the last overcurrent device in a dwelling unit?

18 feet

The minimum clearance for overhead feeder conductors not exceeding 600V that pass over commercial areas Subject to truck traffic is.

1.5"

The outside diameter of a threaded rigid conduit is measured to be about two Inches. The nominal trade size is:

selective coordination

The ·choice of overcurrent protective devices so that an undercurrent condition will be localized and restrict outages to the circuit or equipment affected, is called

20 amp

There shall be a minimum of one branch circuit for laundry outlets required by 210.52

50'

What is the maximum run length of a 18AWG fixture wire that is tapped on to a 20 amp branch circuit?

8 AWG

What is the minimum size of an overhead service drop

Over 100 Lbs

What is the weight in lbs, of a manhole cover that is use to keep out unqualified persons from accessible to opening the manhole?

24"

Where it is impracticable to locate the service head above the point of attachment, the service head location shall be permitted not farther than from the point of attachment

25A

21. Lighting systems covered by Article 411 shall have a power supply rated not more than______and not more than 30V

overloading of wiring systems by methods or usage not in conformity with the NEC, initial wiring not providing for increases in the use of electricity

4. Hazards often occur because of

located on a balcony accessible only to qualified persons located in a room only accessible to qualified persons elevated 8 ft or more above floor or other working surface

4. To guard live parts over 50V but less than 600V, equipment is permitted to be

25'

5. A 125-volt, single-phase, 15- or 20- ampere-rated receptacle outlet shall be installed at an accessible location for the servicing of heating, air conditioning, and refrigeration equipment The receptacle shall be located on the same level and within ______of the heating, air-conditioning, and refrigeration equipment The receptacle outlet shall not be connected to the load side of the equipment disconnecting means

in a straight line

6. The grounding of communications wires should be run to the grounding electrode:

four

8. A load demand factor of 75 percent is permitted for _____or more appliances fastened in place such as waste disposals, dishwashers, trash compactors, water heaters, etc,

8"

9. What is the minimum thickness of a transformer vault floor made up with bricks or cement filled blocks

Bathroom

A _______ is an area that includes a basin with a toilet, tub, or shower.

open

A circuit breaker is a device designed to open the circuit automatically on a predetermined overcurrent without damage to itself when properly applied within its rating.

nonhabitable

A clothes closet is defined as a room or space intended primarily for storage of garments and apparel.

6"

A field bend of a one inch rigid conduit, for RH wire, shall have a minimum radius of

Three Hours

A load is considered to be continuous if the maximum current is expected to continue for ______ or more

700

A service switchboard sized over 5000 amps with a 100% rating shall have copper bus bars sized on an ampacity of _____per square inch

approved

Acceptable to the authority having jurisdiction means

26"

Access openings in a manholes shall be not less than:

cabinet

An enclosure for either surface mounting or flush mounting .provided with a frame in which a door can behung is called a(n) ________

6 AWG

An insulated grounded conductor of_______or smaller shall be identified by a continuous white or gray outer finish; or by three continuous white stripes on other than green insulation along its entire length

Resistance

As compared to #10, a #8 wire of the same Iength has less:

5 times

Bending radius in type AC cable should be at least _____ the diameter of the AC Cable

Sizes are specified by Nominal inside Diameter

Concerning rigid conduit used for electrical work:

permit current to flow

Conductance of an electric circuit is that property that will:

2 in of concrete

Conductors are considered outside a buildings when they are buried under not less than

50V

Exposed live parts of motors and controllers operating at or more between terminals shall be guarded against accidental contact by enclosure or by location

200 VA

For show-window lighting, a load of not less 660 Volt-amperes/linear meter or _____ volt amperes/linear foot shall be included for show window measured horizontally along its base

8

In straight pull, the length of the box shall not be less than. ____times the trade size of the largest raceway.

Shall or Shall Not

In the NEC, the words "_______ " indicate a mandatory requirement

shall not be opened under load can be used only as isolating switch

Knife switches rated for more 1200 amps at 250v or Less ______

10'

Lighting systems operating at 30V or less shall not be·installed within_______of pools, spas, fountains, or similar locatipns

5'

Lighting track shall not be installed less than______ above the finished floor except' where protected from physical damage or where the track operates at less than 30 V rms, open-circuit voltage

5000 VA

Minimum VA for a Dryers

10 feet

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

a. efficient use ,convenience, good service or future expansion·of electrical use

The Code contains provisions considered necessary for safety, which will not necessarily result in

Ampacity

The current in amperes a conductor Ca.n carry continuously, where the temperature will not be raised in excess of the conductor's insulation temperature rating is called its_·

Calculated load

The final sum of the computed loads, based on the minimum code requirements, is the

6 inch

The floors of vaults in contact with the earth shall be of concrete that is not less than ____ Thick, but where the vault is constructed with a vacant space or other stories below it, the floor shall have adequate structural strength for the load imposed on it and a minimum fire resistance of 3 hours.

signaling, electrical conductors, equipment, and raceways, communications

The following systems shall be installed in accordance with the NEC requirements:

40%

The total cross sectional area of conductors (not lead covered) in a new conduit.with four wires shall not exceed:

30"

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

USE

Type______ is a multi conductor cable identified for use as underground service-entrance cable

116 Conductors

What is the Max number of #6 THHN current carrying conductors in 4" EMT for general use is

#4 cooper & #2 Aluminum

What is the minimum size Service Conductor allowed for a dwelling unit

Can be connected to line side of service disconnect.

What is true about installation of a Type 1 TVSS

6

When installing receptacle around the pool they should be set back from the inside walls of not less than ______feet

power supply failure

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 .

24"

Where it is impracticable to locate the service head above the point of attachment, the service head location shall be permitted not farther than______from the point of attachment

Cutout boxes

_______ are designed for surface mounting with a swinging door

Inverse time

__________is a term indicating that there is an intentional delay in the tripping action of the circuit breaker, which decreases as the magnitude of the current increases.

device

. A unit of an electrical system that carries or con1trols electric energy as its principal function is a(n)

4 Feet

11. The dimensions of working space for access to live parts operating at 3OOV, nominal to ground, where there are exposed live parts on both sides of the work space is

Individual

12. A branch circuit that supplies only one utilization equipment is a(n) _______branch circuit

125%

Branch circuit conductor that supply a single motor used in a continuous duty application shall have an ampacity of not less than Percent of the motors full-load current

3 inches

Branch circuit conductors within _____of a ballast shall have an insulation temperature rating not lower than 90 degree Cor 194 degree F

concealed

Cables are considered if rendered inaccessible by the structure or finish of the building

accessible, readily.

Capable of being reached quickly for operation, renewal, or inspections without resorting to portable ladders and such is known as

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 is known as

8

Communications Wires and cables shall have a vertical clearance of not less the ______feet from all points of roofs above which they pass.

12 AWG

Communications circuits shall have a minimum grounding conductor of _____AWG

an electrical system essentially free from hazard

Compliance with the provisions of the NEC will result in

13

How many receptacle outlets are permitted .on a 20A. 120V ircuit in a commercial building?

5/7

Where service equipment totaling 1000 KVA, or larger is installed separately, or as part of a switchboard, the room in which such switchboard is located shall be constructed of noncombustible materials having a two hour fire rating and shall be of dimensions adequate to house the switchboard and to provide the following minimum clearances: At least _____Feet in front of the switchboard if if is in one line, and at least_______ Feet in front of the board if boards are installed facing each other

directly proportional to its length

13. The resistance of copper wire is:

white with colored stripe other than green or distinguished by other suitable approved means

14. Where conductors of different systems are installed in the same raceway, one system shall have a neutral having an outer covering of white or natural gray and each other system having a neutral shall have another covering of

CL2 and CL3

15. Class 2 and class 3 cables listed as suitable for general purpose use with the exception of risers, ducts, plenums, and other spaces used for environmental air, shall be Type ______

4

18. Each general care area patient bed location shall be provided with a minimum of_______receptacles, which can be single, duplex, or a combination with each duplex counting as two receptacles

1200 Amperes

19. When an equipment room houses electrical equipment rated at LEAST _____or more, the personnel doors intended for entrance to and egress from the working space, shall open in the direction of egress.

physical damage

37. In locations where electrical equipment is likely to be exposed to ________ enclosures or guards shall be so arranged and of such strength as to prevent such damage.

115%

A disconnecting means that serves a hermetic refrigerant motor compressor shall have an ampere rating of at least percent of the nameplate rated load current or branch circuit selection current, whichever is greater.

Four

A hospital is a building or portion there of used for the medical, psychiatric, obstetrical, or surgical care, on a 24-hour basis, of _____ or more patients

Earth does not Carry significant current to open over current device

A light post with no equipment ground. But there are two separate ground rods with 25 ohms to ground. What will happen if there is a ground fault?

Refrigerator or Electric Clock

A receptacle connected to one of the dwelling unit small applicance branch circuits can be used to supply an _______ in any of the rooms specified in 210.52(B)(l)

6 feet

A separation of at least ______shall be maintained between communications wires and cables on buildings and lightning conductors, where practicable

35KV

Dry type transformers installed indoors rated over._______ shall be installed in a vault.

1 1/2"

Flat:top underfloor raceways over 4 inches, but less 8 inches wide, with a minimum 1 inch spacing between raceways, shall be covered with concrete to a depth of not iess than 1 inch. Raceways spaced less that 1 inch apart shall be covered with a concrete to a depth of

12"

For cord and plug connected electric vehicle supply equipment is used, the interrupting device of a listed personnel protection system shall be provided and shall be located in the power supply cable not more than ______from the attachment plug.

180 VA

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

48 times

For straight pulls, the length of a pull box shall not be less than _____ time the outside diameter, over the sheath, of the largest shielded ·or lead covered conductor or cable entering the box on systems over 600 volts

locking

GFCI protection at a carnival is not required for equipment at circuit if the receptacle is of the ____________type

1000A

Ground-fault protection of equipment shall be provided fro solidly grounded wye electrical services of more than 150 volts-to-ground, but not exceeding 600V phase-to..phase for each service disconnecting means rated

One

How many receptacles are required within the perimeter of a balcony, deck or porch with a useable area of less than 20 SQ. feet

12

How many# 10 conductors can be legally installed in a 4 inch square box, 2 1/8 deep?

Combination Range hood/ Microwave oven

In a Dwelling Unit which appliance is allowed to have a 24" cord with attachment ground plug?

Cable Tray

MV cable rated 35 KV cannot be installed in

protective barrier or a fixed ladder shall be provided

Manhole openings for personnel shall be located where they are not directly above electrical equipment or conductors inthe enclosure. Where this is not practicable

Orange

On a 4-Wire, delta-connected system where the midpoint of one phase winding is grounded, only the conductor or bus bar 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. Such identification shall be placed at each point on the system where ·a connection is made if the grounded conductor is also present.

4"

Open conductors installed outside shall be separated from open conductors of other circuits or systems by not less than

90

Temporary electrical power and lighting installations shall be permitted for a period not exceeding ____days for Christmas decorative lighting and similar purposes

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 outlets shall be readily accessible

Feeder

The portion of a wiring system between a point of distribution and the branch circuit overcurrent device is

Conductance

The reciprocal of resistance

3.5 Feet

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

10.4

The specific resistance of copper wire @ 20° C in ohms per circular mil ft. is

12 feet

The verticaI clearance from ground level over a residential driveway for overhead service conductors not subject to truck traffic and are less than 300 volts to ground shall be _____ ft:

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

12"

Underground service conductors that are not encased in concrete and that are buried 30 inches or more below grade, shall have their location identified by a warning ribbon that is placed in the trench at least_______inches above the underground installation for 40KV

30"

What is the min Horizontal Climbing Space on a power conductors below communication conductors

white or gray

When leads are supplied with lamp holders the conductor attached to the screw shell shall have a _______finish.

Shall be Permitted

When the Code uses the words " " it means the identified actions are allowed but not required, and they may be options or alternative methods.

power supply failure

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

12 /40

Where communications wires and cables and electric light or power conductors are supported by the same pole and are run paralled to each other in span , the·supply service drops of 0-750 volts running above and parallel to communications service drops shall have a minimum separation of _______inches at any point in the span, including the point of and at their attachment to the building, provided the nongrounded conductors are insulated and that a clearance of not less than_______ inches is maintained between the two services at the pole

36"

Where rear access is required to work on de-energized parts on the back of enclosed equipment, a minimum working Space of _______horizontally shall be provided

36 inches

Where rear access is required to work on de-energized parts on the back of enclosed equipment, a minimum working space of horizontally shall be provided.

Accessible non current-cariying metal parts are required to be connected to an equipment grounding·conductor.

Which of the following statements best describes the grounding requirements for central vacuum outlet assemblies?

Inverse time

_______ is a term indicating that there is an intentional delay in the tripping action of the circuit breaker, which decreases as the magnitude of the current increases