NEC Wiring and Protection 3

Question 1

Per NEC 210.11(C)(1), what is the minimum number of 20-ampere small-appliance branch circuits required for receptacle outlets in a dwelling kitchen?

Accepted Answer

Two

Answer

NEC 210.11(C)(1) requires two or more 20-ampere small-appliance branch circuits for kitchen, pantry, breakfast room, and dining room receptacles.

Question 2

What minimum branch circuit is required by NEC 210.11(C)(2) to supply dwelling unit laundry receptacle outlets?

Accepted Answer

One 20-ampere circuit

Answer

At least one 20-ampere branch circuit must supply the laundry receptacle outlets, and it must have no other outlets.

Question 3

Under NEC 210.52(A)(1), receptacles in dwelling habitable rooms must be installed so that no point along the floor line of any wall space is more than how far from a receptacle?

Accepted Answer

6 ft

Answer

No point along the floor line may be more than 6 ft from a receptacle, which effectively gives a maximum spacing of 12 ft.

Question 4

Dwelling kitchen countertop receptacles must be placed so that no point along the wall line is more than how far, measured horizontally, from a receptacle outlet?

Accepted Answer

24 in.

Answer

NEC 210.52(C)(1) limits the distance to 24 in., so receptacles end up no more than 48 in. apart.

Question 5

Which of the following is NOT a standard ampere rating for fuses and inverse time circuit breakers per NEC 240.6(A)?

Accepted Answer

75 A

Answer

Table 240.6(A) lists 70, 80, and 90 A as standard ratings, but 75 A is not listed.

NEC Practice Test

NEC Practice Test

NEC Wiring and Protection 3