NEC 90.4 grants authority to whom to interpret the NEC requirements and approve equipment or wiring that is not specifically covered by the Code?

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Multiple choice — select the best answer

AThe NFPA Technical Correlating Committee
BThe state legislature
CThe Authority Having Jurisdiction (AHJ)
DThe National Electrical Manufacturers Association (NEMA)

✓ Correct answer: C. The Authority Having Jurisdiction (AHJ) NEC 90.4 vests interpretive authority and the power to approve unlisted equipment or alternative methods in the Authority Having Jurisdiction. The AHJ may grant 'special permission' (written consent) for installations not specifically covered by the Code.

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Topic: Code Administration & Safety

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