Wiring diagram 3 way switch power to light. Typical 3 way switch wiring nm cable. Not all three way switches have these terminals placed in the same configuration so you have to pay attention to their colors and the instructions that come with the package when wiring them. The first step in any electrical project is to make sure there is no power going to the circuit you plan to be working on. With a pair of 3 way switches either switch can make or break the connection that completes the circuit to the light.
A 3 wire nm connects the traveler terminals of the first and second 3 way switch together. The black line wire connects to the common terminal of the first 3 way switch. With a pair of 3 way switches either can make or break the connection that completes the circuit to the light. On most 3 way switches two of the terminals are the same color typically silver or brass and the third terminal called a common terminal is a different often darker color.
Wiring of 3 way light switches 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. Wiring a three way light switch. Two very old three way switches. 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 wiring diagram with power feed via light. Now discussing 3 way light switch wiring diagram as also discussed above the color codes of the wires as having three insulated conductors as black as hot red as switch wire or called traveler and white as common wire as also shown when light is connected to both black and white wires. 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. Turn the power off at circuit breaker.
Two very old three way switches are depicted in the photo above. Below is a simple schematic diagram that can be applied to all three way electrical light switch connections. Power through switch light is controlled by two three way switches with the light between the switches and the power first going through a switch then to the light and onto the second three way switch. Wiring a 3 way light switch.
Basic 3 way switch diagram how to wire 3 way light switch step by step. 3 way switch schematic wiring diagram.