Electrical wires and screw terminals have a color code, which helps you match ... and some devices, like outlets and lamps, ...

of electricity from the power source (electrical panel) to a device like a switch, outlet, light fixture or appliance.” There’s no NEC requirement that hot wires be black or any other color ...

John Carlsen has more than a decade of experience testing and reviewing home tech products, with a major focus on smart home security. He earned his BS in journalism from Utah Valley University.