Ethernet cables are not exactly exciting. After all, they all look the same. One thing you might notice, though, is that they come in a variety of colors, like blue, yellow, red, green, gray, and even ...

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 ...