NM Residential Electrical Inspector Practice Questions - New Mexico CID Residential Electrical Inspector Examination Exam

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Per NEC 2020 310.15(E)(1), which statement correctly describes how the grounded (neutral) conductor of a 3-wire, single-phase, 120/240-volt dwelling feeder is treated when applying the ampacity-adjustment factors?

Never, because it only carries imbalance Only when it carries only the unbalanced load from the other conductors It is not counted as a current-carrying conductor when it carries only the unbalanced load from the other conductors Always, because it is a conductor in the raceway

Correct Answer:

It is not counted as a current-carrying conductor when it carries only the unbalanced load from the other conductors

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