This answer is based on the 2017 NEC. A. Exposed Type NM cable must closely follow the surface of the building [Sec. 334.15(A)]. Nonmetallic-sheathed cable must be protected from physical damage by ...
The conductors, including splices and taps, in a metal surface raceway having a removable cover shall not fill the raceway to more than ____% of its cross-sectional area at that point. Article 386 ...
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