Practice test

Electrician Practice Exam 17

Expert electrician exam on multi-motor feeders, secondary taps, objectionable current, and panel rules. 25 timed questions with NEC explanations.

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These questions are for study practice only and are not official exam questions.

Question 1

1

A commercial building (standard method): 40,000 VA continuous lighting, receptacles 22,000 VA (220.44: 10k at 100% + 12k at 50%). What is the receptacle demand?

Question 2

2

Per NEC 250.30(A)(5), the SDS grounding electrode conductor connects the system grounded conductor to:

Question 3

3

Per NEC 240.21(C)(2), a 10-ft transformer secondary tap to a 200 A panel requires the secondary conductors to have ampacity at least:

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