![]() The black feed wire that goes to the light fixture is connected to the single black screw on the other 3-way switch. The line wire is the one that is hot all the time. It's important to realize you must put the line wire on the single black screw on the one 3-way switch. That's the best part.Ĭonnecting the traveler wires is caveman simple and idiot-proof. It makes no difference what wire goes on what screw at each switch. Watch the video above to see how easy it is to connect them. The traveler wires go on the brass screws. They often call the other black wire that goes from the other 3-way switch to the light fixture the load wire as the light bulb(s) are the actual load or thing that's using the electricity. The black screw on a 3-way switch diagram is for the continuous hot wire that comes from the circuit panel or for the feed wire that runs up to the light fixture.Įlectricians call the continuous hot wire the line wire. What is the Black Screw For on a 3-Way Switch Diagram? The diagram below is based on the video you watched above. Then watch the longer video below to see how to connect all the wires.ģ Way Switch Wiring Video What is a 3 Way Switch Wiring Diagram?Ī 3-way switch wiring diagram is a simple drawing showing how to connect the wires to each of the four screws on the 3-way switch. Watch this very short 11-second video to see exactly WHAT a 3-Way switch is. 14/3 with ground or 12/3 with ground wire best to use between switches.continuous hot and light feed wire goes on black screw.The most important screw is the black one." 3 Way Switch Diagram TIPS "A 3-way switch has three screws plus the green grounding screw. 3-way switch diagram requires you to look for this all-important black screw.
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