Nec

Article 200 provides the requirements for _____.

Identification of terminals, grounded conductors in premises wiring systems, and identification of grounded terminals

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 branch circuits originate

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

By special permission, the authority having jurisdiction may waive specific requirements in this Code where it is assured that equivalent objectives can be achieved by establishing and maintaining effective safety.

True

Receptacles shall have the terminal intended for connection to the grounded conductor identified by a metal or metal coating that is substantially _____ in color.

White or green

A three-phase, 4-wire, _____ power system used to supply power to nonlinear loads may necessitate that the power system design allow for the possibility of high harmonic currents on the neutral conductor.

Wye-connected

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

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

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

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

Service-drop conductors shall have

sufficient ampacity to carry the load and adequate mechanical strength

Where rock bottom is encountered when driving a ground rod at an angle up to 45º, the electrode can be buried in a trench that is at least _____ deep

30 inches

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

300.5

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

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

180

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

30 A

Grounded conductors _____ AWG or larger can be identified by distinctive white or gray markings at their terminations.

4

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.

Bathrooms, rooftops, and kitchens

_____ in dwelling units shall supply only loads within that dwelling unit or loads associated only with that dwelling unit.

Branch circuit

Nonmandatory Informative Annexes contained in the back of the Code book are _____.

For information only and not enforceable as a requirement of the Code

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

The identification of _____ to which a grounded conductor is to be connected shall be substantially white in color.

Terminals

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

Utilities may include entities that are designated or recognized by governmental law or regulation by public service/utility commissions.

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

Service-entrance conductors can be spliced or tapped by clamped or bolted connections at any time as long as _____.

the free ends of conductors are covered with an insulation that is equivalent to that of the conductors or with an insulating device identified for the purpose, wire connectors or other splicing means installed on conductors that are buried in the earth are listed for direct burial, and no splice is made in a raceway

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 _____ shall have GFCI protection for personnel.

Bathrooms, rooftops, and kitchens

The Code covers underground mine installations and self propelled mobile surface mining machinery and its attendant electrical trailing cable.

False

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

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 at all termination, connection, and splice points in compliance with 210.5(C)(1)(a) and (b)

Ungrounded

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

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

Column A

_____ 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

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

None of these EX RMC, IMC,EMT

Grounding electrode conductors that are not subject to physical damage can be run exposed along the surface of the building construction if securely fastened to the surface on which it is carried.

True

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.

6

In dwelling units, GFCI protection shall be provided for all 15A and 20A, 125V, single phase receptacles installed within _____ ft from the top inside edge of the bowl of a sink.

6

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.

1,000 Amps

The screw shell of a luminaire or lampholder shall be connected to the _____.

Grounded conductor

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

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

Single-pole breakers with identified handle ties can be used to protect each ungrounded conductor for line-to-line connected loads.

True

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

12 Awg

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

15a

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.

2

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.

20

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

43

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.

5

Grounding electrodes of the rod type less than _____ in. in diameter shall be listed.

5/8

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

6

_____ shall not be used as grounding electrodes.

Aluminum and Metal underground gas piping systems

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

Are suitably protected from physical damage and terminate at a single circuit breaker or a single set of fuses that limits the load to the ampacity of the conductors

For the purposes of 210.71, examples of rooms that are not meeting rooms include _____.

Auditoriums, schoolrooms and coffee shops

Article 210 provides the general requirements for _____.

Branch circuit

The grounded conductor of an alternating-current system operating at 1,000V or less shall be routed with the ungrounded conductors and connected to each disconnecting means grounded conductor terminal or bus, which is then connected to the service disconnecting means enclosure via a(n) _____ that is installed between the service neutral conductor and the service disconnecting means enclosure.

Main bonding jumper

The GFCI protection required by 210.8(A), (B), (C), (d) and (E) shall be _____.

Readily accessible

120V, single phase, 15A and 20A branch circuits supplying outlets and devices installed in guest _____ of hotels and motels shall be protected by any of the means described in 210.12(A)(1) through (6).

Rooms and suites

Lightning protection system ground terminals _____ be bonded to the building or structure grounding electrode system.

Shall

In the NEC, the word(s) "_____" indicate a mandatory requirement.

Shall or shall not

Grounding electrode conductors of the wire type shall be _____.

Solid, stranded, and insulated or bare

Where more than one concrete-encased electrode is present at a building or structure, it shall be permitted to bond only one into the grounding electrode system.

True

Each multiwire branch circuit shall be provided with a means that will simultaneously disconnect all _____ conductors at the point where the branch circuit originates.

Ungrounded

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, and other identification allowed by 200.6(A) or (B) that distinguishes each system from other systems

The continuity of a grounded conductor shall not depend on a connection to _____.

a metallic enclosure, raceway, and cable armor

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

All 15A and 20A, 125V, single phase receptacles located outdoors of dwelling units, including receptacles installed under the eaves of roofs, shall be GFCI protected except for a receptacle that is supplied by a branch circuit dedicated to _____ if the receptacle is not readily accessible and the equipment or receptacle has ground fault protection of equipment (GFPE) [426.28 or 427.22].

electric snow melting or deicing equipment and pipeline and vessel heating equipment

The NEC applies to the installation of _____.

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

The NEC is _____.

for the practical safeguarding of persons and property

The Code provides rules for the minimum number of receptacle outlets required in a dwelling unit. The minimum required receptacle outlets shall be in addition to receptacle outlets that are _____.

part of a luminaire or appliance, controlled by a wall switch for use as required illumination, located more than 5 1/2 ft above the floor

Ungrounded alternating-current systems from 50V to 1,000V or less that are not required to be grounded in accordance with 250.20(b) shall have _____.

Grounded detectors installed and the ground detection sensing equipment connected as close as practicable to where the system receives its supply

All 15A and 20A, 125V, single phase receptacles installed in bathrooms of _____ shall have ground fault circuit interrupter (GFCI) protection for personnel.

Guest rooms, office buildings, and dwelling units

The white conductor within a cable can be used for a(n) _____ conductor where permanently reidentified to indicate its use as an ungrounded conductor at each location where the conductor is visible and accessible.

Ungrounded

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 combination AFCI located at the origin of the branch circuit and listed outlet branch circuit AFCI located at the first receptacle outlet of the existing branch circuit

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

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

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

Efficient use, convenience, and good service or future expansion of electrical use

Where service equipment consists of more than one enclosure, grounding electrode conductor connections shall be permitted to be _____.

Multiple individual grounding electrode conductors, One grounding electrode conductor at a common location, and a common grounding electrode conductor and taps

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.

18

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.

True

Where grounded conductors of different systems are installed in the same raceway, cable, or enclosure, the means of identification of the different neutrals shall be documented in a manner that is _____ or be permanently posted where the conductors of different systems originate.

readily accessible

Requirements for branch circuit GFCI protection for personnel are contained in 210.8 and requirements for _____ are contained in 422.5(A).

Appliances

The receptacle outlet required for indoor electrical service equipment shall not be required to be installed for _____.

One and two family dwellings

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 and the first disconnecting means