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

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Per NEC 2020 Table 250.66, what is the minimum copper grounding electrode conductor for a service with 2/0 AWG copper ungrounded service-entrance conductors?

8 AWG copper 6 AWG copper 4 AWG copper 2 AWG copper

Correct Answer:

4 AWG copper

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