Journeyman Electrician’s Exam Journeyman Electrician's 5

Question 1

According to the NEC, what is the maximum distance between supports for rigid nonmetallic conduit (PVC) with a trade size of 1 inch?

Accepted Answer

4 feet

Answer

NEC Table 352.30(B) requires PVC conduit of 1-inch trade size to be supported at maximum intervals of 4 feet.

Question 2

What is the maximum number of 90-degree bends permitted in a single conduit run between pull points?

Accepted Answer

4

Answer

NEC 358.26 (and similar articles) limit the total bends between pull points to 360 degrees, which equals four 90-degree bends.

Question 3

Which of the following loads is considered a continuous load for circuit sizing purposes?

Accepted Answer

A lighting circuit energized for 8 hours per day

Answer

NEC 100 defines a continuous load as one where the maximum current is expected to continue for 3 hours or more; 8 hours of lighting qualifies.

Question 4

What is the required working clearance in front of a 120/240V panelboard mounted in a residential garage?

Accepted Answer

30 inches

Answer

NEC 110.26(A)(1) requires a minimum working clearance of 3 feet (36 inches) in front of electrical equipment rated 120V to 250V, Condition 1.

Question 5

When calculating service load for a residential dwelling, what demand factor applies to the first 3,000 VA of general lighting load?

Accepted Answer

100%

Answer

NEC Table 220.42 requires the first 3,000 VA of general lighting load in a dwelling unit to be calculated at 100% demand factor.

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