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

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Per NEC 2020 250.52(A)(3), a concrete-encased electrode shall consist of at least 20 feet of bare copper conductor not smaller than 4 AWG, or at least 20 feet of one or more bare or zinc-galvanized or other electrically conductive coated steel reinforcing bars or rods of not less than which diameter?
Correct Answer:
½ inch

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