Decoding Colors: What Is The Black And Red Wire In Electrical Wiring?
Black and red wires are both hot (live) wires: the black wire is the standard current-carrying conductor that feeds outlets, lights, and most appliances, while the red wire is a second hot wire used for switch legs, three-way switches, and 240-volt circuits like your dryer or range. In U.S. residential wiring, if a wire is …