![]() It's much better to watch the video above to have a realistic 3-way wiring diagram. Here's a 3-way wiring diagram I made back in the 1990s on a very crude version of Microsoft Publishing software. 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. A common application is in lighting, where it allows the control of lamps from multiple locations, for example in a hallway, stairwell, or large room. That's the best part.Ĭonnecting the traveler wires is caveman simple and idiot-proof. In building wiring, multiway switching is the interconnection of two or more electrical switches to control an electrical load from more than one location. It makes no difference what wire goes on what screw at each switch. This will prevent accidental electrocution and reduce. Watch the video above to see how easy it is to connect them. Ensure that the circuit for the room you are working in has been flipped off. 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. In alternative designs, low-voltage relay or electronic controls can switch electrical loads, sometimes without the extra power wires.3-way switch diagram requires you to look for this all-important black screw. Double pole, double throw (DPDT) switches allow control from three or more locations. When the load is controlled from only two points, single-pole, double-throw (SPDT) switches are used. In contrast to a simple light switch, a single-pole, single-throw (SPST) switch, multiway switching uses buttons with one or more additional contacts, and two or more wires are run between the switches. A common application is in lighting, where it allows the control of lamps from multiple locations, for example, in a hallway, stairwell, or large room. ![]() In building wiring, multiway switching is the interconnection of two or more electrical switches to control an electrical load from more than one location. You can create a detailed diagram like this one or create a simple outline of the layout. In this wiring diagram, the fixture is connected to the switches with three-wire cables. Another way to wire a three-way switch is when supply comes at the switch, goes to the fixture, and terminates at the other switch. ![]()
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