Non-metallic (NM) sheathed cable is one of the essential wiring methods found in Chapter 3 of the National Electrical Code (NEC) — see Art. 334. NM cable is used by electricians for wiring ...
A. If Type NM cables pass through factory or field-made openings in metal framing members, the cable must be protected by listed bushings or listed grommets that cover all metal edges. The protection ...
Add Yahoo as a preferred source to see more of our stories on Google. You don't need to be an electrician to understand the basics about how your home is wired. A general understanding of how cables ...
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