The steps above describe installing a 3 way switch and provide a 3 way switch diagram utilizing one light fixture. A 4 way switch is always placed in between two 3 way switches.
Four Way Switch Wiring Diagrams One Light Wiring Diagram Source
Wiring diagram for 3 way switch with 4 lights. If you understand how to wire a 3 way switch youll have no issues with a 4 way switch. Theodore handsmith march 17 2019. An example of three way switch wiring with the line and load in the same 4 square electrical box. If you intend to add multiple lights with a 3 way switch use the 3 way switch for multiple lights diagram. 3 way switch wiring diagram. Wiring a 3 way light switch.
In the above diagram the white wire must be re identified as a hot wire at each switch location. 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. They all must be between the two 3 way switches. Take a closer look at a 3 way switch wiring diagram. The white wire between switches is not being used as a neutral. Wiring a 3 way switch with multiple lights in this circuit two light fixtures are shown but more can be added by duplicating the wiring arrangement between the fixtures for each additional light.
You can have an indefinite number of 4 way switches in a circuit. 3 way switch wiring diagram with line and load in the same switch box. 4 way switch wring diagram. With these diagrams below it will take the guess work out of wiring. Watch the 4 way switch video below and pay attention. With a pair of 3 way switches either can make or break the connection that completes the circuit to the light.
Here the source is at the first switch sw1 and 3 wire cable runs from there to the first light l1. Ideally a switch is an ideal conductor but realistically its got a little bit of resistance between both contacts. Wiring multiple lights on a 3 way switch. Pick the diagram that is most like the scenario you are in and see if you can wire your switch. Whether you must use a 4pdt switch or another switch in your pcb altium. This might seem intimidating but it does not have to be.
Wiring diagram for 3 way switch with 4 lights.