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Massachusetts Electrician Practice 14

Practice 14 for Electrician Exam learners in Massachusetts: 25 questions, explained answers, and a review routine.

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Question 1

1

A 3-phase, 4-wire feeder serves nonlinear (computer) loads. Per NEC 220.61(C) and 310.15(E), the neutral is:

Question 2

2

A 200 A feeder to a remote building runs an EGC. Per NEC Table 250.122, the copper EGC must be:

Question 3

3

A continuous load is served by a 30 A circuit. Per NEC 210.20(A), the maximum continuous load is:

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