Chat or rant, adult content, spam, insulting other members, show more. Harm to minors, violence or threats, harassment or privacy invasion, impersonation or misrepresentation, fraud or phishing, show more. Yahoo Answers. How do I hook up a three way switch?
Show less A 3-way light switch allows you to control a light source from two separate points. Note: there are several ways to install a 3 Way Light Switch. The methods shown here are some of the safest and most versatile, though not the only options. To wire a 3 way light switch, you'll need 2 3-way light switches, 2 2-wire non-metallic cables, 1 3-wire non-metallic cable, and 2 6-inch grounding wires. First, run a 2-wire cable from the wall power to the black screw on 1 of the switches. Then, connect the 2 switches by splitting the 3-wire cable apart and attaching each of the 3 wires to one of the other 3 screws on each switch.
Three-way switches require a three-wire cable: the power wire, the neutral wire, and the traveller or switch wire. The cable should also have a ground wire, or a total of four wires in the cable. The system also requires three-way switches. The switches are wider than regular single-pole switches and they have three terminal screws on the side sometimes back of the switch housing. Two terminals will be on one side of the switch housing; one terminal on the other side.