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. “Hot or ...

In the past, smart switch users in older homes that lack neutral wiring had to cough up the cash for a wireless hub to make their switches work, but C by GE recently announced new—and hubless—smart ...