F80 Code Requirements 5

Question 1

According to the NEC, what is the maximum voltage permitted between conductors for receptacles installed in dwelling unit bedrooms?

Accepted Answer

250 volts

Answer

The NEC does not restrict receptacle voltage in bedrooms to 120 volts; standard 250-volt receptacles are permitted for appliances such as window air conditioners.

Question 2

Under NEC 300.14, at least how much free conductor length must be left at each outlet, junction, or switch point for splices or connections?

Accepted Answer

6 inches

Answer

NEC 300.14 requires a minimum of 6 inches of free conductor length, measured from the point it emerges from the raceway or cable sheath.

Question 3

Per NEC 250.119, which color is reserved exclusively for equipment grounding conductors when conductors are 6 AWG or smaller?

Accepted Answer

Green

Answer

NEC 250.119 designates green or green with yellow stripes as the identification for equipment grounding conductors 6 AWG and smaller.

Question 4

What does the NEC require regarding arc-fault circuit interrupter (AFCI) protection in a newly constructed single-family dwelling?

Accepted Answer

AFCI protection is required for all 120-volt, 15- and 20-ampere branch circuits in all rooms

Answer

NEC 210.12(A) now requires combination-type AFCI protection for all 120-volt, 15- and 20-ampere branch circuits throughout dwelling units.

Question 5

Under NEC 230.70, where must the service disconnecting means be installed?

Accepted Answer

At a readily accessible location either outside or inside nearest the point of entrance

Answer

NEC 230.70(A)(1) requires the service disconnecting means to be installed at a readily accessible location either outside or inside the building, nearest the point of service entrance.

F80 Practice Test

F80 Practice Test

F80 Code Requirements 5