NM Electrical Inspector (General) Practice Questions - New Mexico CID Electrical Inspector (General) Examination Exam

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A second building on a property is supplied by a 120/240-volt feeder that includes an equipment grounding conductor. Under NEC 250.32(B), how must the inspector require the grounded conductor and equipment grounding conductor to be treated at the second building?

The grounded conductor must be bonded to the enclosure and to a local electrode at the second building in all cases The equipment grounding conductor must be connected to the building disconnect enclosure and to the local grounding electrode system, and the grounded conductor must not be connected to the enclosure or electrode system, except as permitted for existing installations No local grounding electrode is ever required at the second building The feeder equipment grounding conductor may be omitted if a ground rod is driven at the second building

Correct Answer:

The equipment grounding conductor must be connected to the building disconnect enclosure and to the local grounding electrode system, and the grounded conductor must not be connected to the enclosure or electrode system, except as permitted for existing installations

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