On A 3-way, there’s an extra terminal, known as the “common.” Power is available in to the switch within the frequent, then two “traveler” wires hook up the initial switch to the next on the brass terminals. ” Insert the transmitter into a receptacle or light socket, and sweep the https://smartpowerpoints09630.aboutyoublog.com/39294134/the-best-side-of-safe-electrical-wiring