NEC Equipment for General Use 3

Question 1

Under NEC 400.12, which use of flexible cord is NOT permitted?

Accepted Answer

As a substitute for the fixed wiring of a structure

Answer

NEC 400.12 prohibits flexible cords from being used as a substitute for the fixed wiring of a structure.

Question 2

What is the minimum size fixture wire permitted by NEC 402.6?

Accepted Answer

18 AWG

Answer

NEC 402.6 states fixture wires shall not be smaller than 18 AWG.

Question 3

A 20-ampere, 125-volt receptacle installed outdoors in a wet location must have what type of enclosure or cover?

Accepted Answer

A listed, extra-duty in-use (bubble) cover

Answer

NEC 406.9(B)(1) requires 15- and 20-ampere receptacles in wet locations to have an enclosure that is weatherproof whether or not a plug is inserted, and it must be listed as extra duty.

Question 4

Per NEC 404.8(A), switches and circuit breakers used as switches must be installed so the center of the operating handle in its highest position is no more than how high above the floor or working platform?

Accepted Answer

6 ft 7 in (2.0 m)

Answer

NEC 404.8(A) limits the highest handle position to 2.0 m (6 ft 7 in) above the floor or working platform.

Question 5

In a dwelling unit, which receptacles must be listed tamper-resistant under NEC 406.12?

Accepted Answer

All nonlocking 15- and 20-ampere, 125- and 250-volt receptacles in the areas specified

Answer

NEC 406.12 requires all nonlocking 125-volt and 250-volt, 15- and 20-ampere receptacles in dwelling units to be tamper-resistant, with limited exceptions.

NEC Practice Test

NEC Practice Test

NEC Equipment for General Use 3