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Understanding Electrical Wire Color Codes

First on the electrical wire color code is black. “Black wires are most used as ‘hot’ wires in residential systems,” says ...
Electrical Construction & Maintenance

Code Q&A: Protection Options for Type NM Cable

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 ...