Chapter 2 NEC- Review questions

All conductors of a(n) ____ branch circuit shall originate from the same panel board.

multiwire

At least one receptacle outlet shall be installed in ____' or longer hallways of dwelling units.

10

A current flow of ____ mA will most likely cause the heart to stop pumping.

100

Branch-circuit conductors shall be ____ AWG or larger.

14

The required 125 V, 1 Ø, 15 A or 20 A receptacle on rooftops for heating, air- conditioning, and refrigeration servicing shall be within ____' of the equipment.

25

The required dwelling unit outdoor receptacles shall be not more than ____ above finished grade level.

6'6''

______ conductors are the conductors from the service point to the service disconnecting means.

service conductors

At least one receptacle outlet shall be installed within 36" of the outside edge of each bathroom basin in all dwelling units.

true

T or F. All 125 V, 15 A and 20 A receptacles installed in the dwelling bathroom shall be GFCI.

true

T or F. All receptacles in dwelling unit crawl spaces at or below grade shall be GFCI-protected.

true

T or F. All receptacles which serve counter tops in dwelling kitchens shall be GFCI.

true

T or F. Branch circuits with not over 120 V between conductors are permitted to supply auxiliary equipment of electric-discharge lamps.

true

Branch-circuits EGCs smaller than 4 AWG shall have a continuous outer finished that is either green or green with one or more _____ stripes unless it is bare.

yellow

A(n) _____ load is a load where the waveform of the steady-state current does not follow the wave shape of the applied voltage.

nonlinear load

A wall switch shall be provided at each floor level for a lighting outlet installed in an interior dwelling stairway with ____ or more risers between floors.

6

In dwelling units, a GFCI-protected receptacle is required when located within ____ ' from the inside edge of the bowl on the sink. (a #)

6

Receptacle outlets installed in a dwelling for specific applicances shall be located with _____ ' of the appliance.

6

T or F. A GFCI receptacle or circuit breaker is set to trip at 10mA.

False

The main concern in ___ branch circuits is that the neutral shall never be opened while the circuit is energized.

multiwire

For an area to qualify as a bathroom, a ____ shall be present. (A) tub, (B) basin, (C) toilet, (D) shower, write the word not the letter.

basin

The _____ is that portion of the electrical circuit between the last overcurrent device and the outlets or utilization equipment.

branch circuit

_____ is 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.

demand factor

T or F. No point along the wall line for a dwelling unit countertop shall be more than 48" from a receptacle outlet.

false

______ conductors are all circuit conductors between the service equipment and the final branch-circuit over current device.

feeder

In general, the grounded conductor of a branch circuit shall be identified by a continuous white or _____ outer finish.

grey