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 ...

Learn how to follow the NEC and IEC standards for electrical wire color codes, and what to do if you encounter a different system. Plus, some safety tips and benefits.

Note: The figures for this article are not available online If you're installing or maintaining technology wiring systems, you'd better understand the Code rules that govern their installation, as ...

Test your knowledge of the NEC.Mike Holt is the owner of Mike Holt Enterprises (www.MikeHolt.com), one of the largest electrical publishers in the United States. He earned a master's degree in the ...