Black Wires 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 ...

Traders work on the floor at the New York Stock Exchange (NYSE) in New York City, U.S., March 20, 2025. REUTERS/Brendan McDermid/File Photo Wall Street's main indexes declined on Friday as ...