Electrician prep test

Metal raceways and metal piping within ___ ft of the inside walls of an indoor spa or hot tub, and not separated from the indoor spa or hot tub by a permanent barrier, shall be bonded together.

10

In Class I, Division 1 locations, conduit seals shall be installed within ____ in. from the endosure or as required by the enclosure marking.

18

An in-sink waste disposer can be cord-and-plug-connected, but the cord shall not be less than 18 in. or more than ____ in. in length.

36

For listed explosionproof equipment, factory-threaded NPT entries shall be made up with at least threads fully engaged.

4½

For equipment rated 1,200A or more and over 6 ft wide 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.

6½

Motors, generators, or other rotating electrical machinery identified for Class I, Division 2 locations can be used in Class I, Division 1 locations.

False

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

Junction boxes connected to conduits that extend directly to forming shells of swimming pool no-niche luminaires shall be provided with number of grounding terminals that is at least _____ the number of conduit entries.

One more than

The NEC allows a lighting outlet on the wall in a clothes closet when it is at least 6 in. away from storage space.

True

The grounding conductor connection to the grounding electrode shall be made by

any of these

At least _____125V, single-phase, 15A or 20A, duplex receptacle(s) shall be provided in each elevator machine room and elevator machinery space.

one

An enclosure constructed so that moisture will not enter the enclosure under specific test conditions is called".

watertight

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.

3

Fire alarm cables that are not terminated at equipment other than a connector and not identified for future use with a tag are considered abandoned.

True

Flexible cords and flexible cables are permitted for the electrical connection of permanently installed equipment racks of audio systems to facilitate access to equipment.

True

A(n) ". ___ enclosure is constructed or protected so that exposure to the weather will not interfere with successful operation.

weatherproof

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.

1,000A

Surface-type cabinets, cutout boxes, and meter socket enclosures in damp or wet locations shall be mounted so there is at least ____ in. airspace between the enclosure and the wall or supporting surface.

1/4

For installations of resistors and reactors, a thermal barrier shall be required if the space between them and any combustible material is less than

12

Conductors supplying several motors shall not be sized smaller than ____ percent of the full-load current rating of the highest rated motor, plus the sum of the full-load current ratings of all other motors in the group, plus the ampacity of other loads.

125

The voltage at the line terminals of a fire pump motor controller shall not drop more than percent below the controller's normal rated voltage under motor-starting conditions.

15

In one- and two-family dwellings, the grounding electrode conductor for CATV systems shall be as short as practicable, not to exceed ______ft in length.

20'

The minimum thickness of sealing compound in Class I locations shall not be less than the trade size of the conduit or sealing fitting and, in no case, shall the thickness of the compound be less than

5/8

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

6

Surface-mounted fluorescent luminaires in clothes closets shall be permitted on the wall above the door, or on the ceiling, provided there is a minimum clearance of ____ in. between the luminaire and the nearest point of a storage space.

6

Edison-base fuseholders shall be used only if they are made to ассept ___ fuses by the use of adapters.

Type S

The _____ shall conduct or witness a test of the complete emergency system upon installation and periodically afterward.

authority having jurisdiction

The motor ___ currents listed in Tables 430.247 through 430.250 shall be used to determine the ampacity of motor circuit conductors and short-circuit and ground-fault protection devices.

full-load

GFCI protection shall be required for all 125V receptacles not exceeding 30A and located within 6 ft measured from the inside walls of a hydromassage bathtub.

horizontally

Where installed to reduce electrical noise for electronic equipment on the grounding circuit, a metal raceway can terminate to a(n) ___ nonmetallic fitting(s) or spacer on the electronic equipment. The metal raceway shall be supplemented by an internal insulated equipment grounding conductor.

listed

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

single

Fire alarm cables identified for future use shall be marked with a tag of sufficient durability to withstand

the environment involved

Three-way and four-way switches shall be wired so that all switching is done only in the circuit conductor.

ungrounded

Accessible portions of abandoned CATV cable shall be removed unless tagged for future use.

True

3-conductor SJE cable (one conductor is used for grounding) has a maximum ampacity of _____ for each 16 AWG conductor.

13A

Each doorway leading into a transformer vault from the building interior shall be provided with a tight-fitting door havinga minimum fire rating of ____hours.

3

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

At least one 15A or 20A, 125V receptacle on a general-purpose branch circuit shall be located a minimum of _____and a maximum of 10 ft from the inside wall of a spa or hot tub installed indoors

6 ft

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

The conductors, including splices and taps, in a surface nonmetallic raceway havinga cover capable of being opened in place, shall not fill the raceway to more than percent of its cross-sectional area at the point of the splice or tap.

75

Equipment bonding jumpers on the supply side of the service shall be no smaller than the sizes specified in

Table 250.102(C)(1)

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

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

True

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

True

Type MC cable installed through, or parallel to, framing members shall be protected against physical damage from penetration by screws or nails by 14 in. separation or protected by a suitable metal plate.

True

Luminaires shall maintain a minimum clearance from the closet storage space of

all of these

The intersystem bonding termination shall

all of these

Conductors of ac and dc circuits, rated 1,000V or less, shall be permitted to occupy the same ____ provided that all conductors equal to the maximum voltage applied to any conductor. have an insulation rating

any of these

The two to six disconnects for a disconnecting means for a building supplied by a feeder shall be

grouped

Ground-fault protection of equipment shall ___in any fire pump power circuit.

not be installed

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

The total marked rating of a cord-and-plug-connected room air conditioner, connected to the same branch circuit which supplies lighting units, other appliances, or general-use receptacles, shall not exceed ____ percent of the branch-circuit rating.

50