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First on the electrical wire color code is black. “Black wires are most used as ‘hot’ wires in residential systems,” says master electrician Allyson Saling with Frontdoor home services app. “Hot or ...

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Explanation: Section 427.22 requires heat trace cable on pipelines to have ground-fault protection of equipment, not personnel. Lupacchino is a senior design engineer with Gaylor Electric, Inc. in ...

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That addition to the NEC didn’t last long. In August, the NFPA Standards Council made the rare decision to override the code-making panel based on an appeal that had support from Honda, GM, Ford, ...

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