Journeyman Electrician’s Exam Wiring Methods and Materials 3

Question 1

Per NEC 314.28(A)(1), for a straight pull through a pull box, the box length must be at least how many times the trade size of the largest raceway?

Accepted Answer

8 times

Answer

6 times

Answer

4 times

Answer

12 times

Question 2

Per NEC Table 314.16(B), what is the cubic inch volume allowance for each 12 AWG conductor in a box fill calculation?

Accepted Answer

2.25 cubic inches

Answer

2.0 cubic inches

Answer

2.5 cubic inches

Answer

3.0 cubic inches

Question 3

Per NEC 314.16(B)(4), each device yoke or strap (such as a switch or receptacle) counts as how many conductors for box fill?

Accepted Answer

Two conductors equivalent

Answer

Zero—devices are not counted

Answer

One conductor equivalent

Answer

Counted per number of terminals used

Question 4

Per NEC 300.4(A)(1), when boring holes through wood framing to route cables or conduit, the edge of the hole must be at least how far from the nearest edge of the framing member?

Accepted Answer

1-1/4 inches

Answer

1 inch

Answer

1-1/2 inches

Answer

2 inches

Question 5

Per NEC 110.26(A)(2), what is the minimum headroom required in working spaces around electrical equipment operating at 600V or less?

Accepted Answer

6.5 feet

Answer

5.5 feet

Answer

6 feet

Answer

7.5 feet

Question 6

Per NEC 314.28(A)(2), for an angle pull in a pull box, the distance from each conduit entry to the opposite wall must be at least:

Accepted Answer

6 times the trade size of the largest conduit, plus the sum of other conduits on the same wall

Answer

8 times the trade size of the largest conduit

Answer

4 times the trade size of all conduits combined

Answer

12 times the trade size of the largest conduit