Three Way Switch Wiring Power At Light

Two very old three way switches.

Three way switch wiring power at light.

The ground wire goes through both switch boxes and the ceiling light box and it is connected at all junctions except the light with a pigtail short piece of wire and wire connector. Here we have a single light controlled by 3 way switches. 3 way switch schematic wiring diagram. When wiring a 3 way switch circuit we will be using a 3 wire cable known as romex coming from the source such as the breaker box.

The hot from the power source connects to the common terminal of the first 3 way switch sw1 and the neutral is spiced through sb1 to the second 3 way switch sw2 via the 3 wire cable c2 that also carries the travelers that connect the two switches where it is spliced through sb2 to the neutral terminal of the light. The following article explains how to perform three way switch wiring when the power source is at the fixture. This is only a wiring schematic and not the actual wiring method used for 3 way switch installations. In this light switch wiring diagram the power feed joins the circuit via the light fixture where a two wire cable c2 runs from the light to the first 3 way switch sw1 and a 3 wire cable c3 joins the two switches.

Two three way switches control one light with the electric power coming through the first switch flowing to the second switch and then to the light fixture. With a pair of 3 way switches either can make or break the connection that completes the circuit to the light. 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. If your 3 way light switch 2 is connected between the power supply and the light fixture as is most common.

The existing 2 wire black and white romex can still be used to connect a 3 way switch 2 and the light fixture. Wiring a 3 way light switch. Each 3 way switch in these examples are controlling the power source to the same load. Mike teaches you how to wire a 3 way switch.

The correct wire must be connected to the common screw of a 3 way switch otherwise the switches will not control the light fixtures correctly. Get more details at.