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Maine Electrician Practice 16

Practice 16 for Electrician Exam learners in Maine: 25 questions, explained answers, and a review routine.

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Question 1

1

A 208Y/120 V, 3-phase, 4-wire panel feeds a balanced 90 A line-to-line load plus 45 A of 120 V line-to-neutral load on phase A only. Per NEC 220.61, the neutral carries:

Question 2

2

Per NEC 250.102(D), a load-side equipment bonding jumper (around a flexible conduit) is sized per:

Question 3

3

Per NEC Table 310.15(B)(1), a 90 C-rated conductor in a 46-50 C ambient gets a correction factor of:

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