Wiring a 3 way light switch is certainly more complicated than that of the more common single pole switch but you can figure it out if you follow our 3 way switch wiring diagram. 3 way switch schematic wiring diagram.
How Three Way Light Switches Work
Three way switch schematic diagram. Two very old three way switches are depicted in the photo above. Pick the diagram that is most like the scenario you are in and see if you can wire your switch. A wiring diagram is a streamlined conventional pictorial depiction of an electrical circuit. The diagrams below show the conventional wiring for 3 way switches. With a pair of 3 way switches either can make or break the connection that completes the circuit to the light. Assortment of 3 way switch wiring schematic.
In the 1st diagram below a 2 wire nm cable supplies power from the panel to the first switch box. See alternate 3 way switch wiring configuration for another way 3 way switches may be wired. With these diagrams below it will take the guess work out of wiring. Below is a simple 3 way schematic that can be applied to all three way electrical light switch connections. Typical 3 way switch wiring nm cable. The black line wire connects to the common terminal of the first 3 way switch.
A 3 wire nm connects the traveler terminals of the first and second 3 way switch together. Unfortunately not all 3 way switches are wired the conventional way. 3 way switch wiring diagram. This is only a wiring schematic and not the actual wiring method used for 3 way switch installations. It reveals the components of the circuit as streamlined shapes and the power and also signal links in between the gadgets. Take a closer look at a 3 way switch wiring diagram.
Two very old three way switches. Wiring a 3 way light switch. Traveler wires are interchangeable. This might seem intimidating but it does not have to be. If you have any problems with these switches it may be best to call an electrician.
Gallery of Three Way Switch Schematic Diagram
