Run a 2 wireblackwhite cable between the new light box and the second set of switches. The two hot wires of three wire cable connect to a pair of.
How To Wire 3 Way Lighting Circuit
How to wire a three way switch circuit. Three way switches can be wired in a number of different ways depending on where they are located relative to the light fixture in the circuit cable runs. A 3 wire nm connects the traveler terminals of the first and second 3 way switch together. This might seem intimidating but it does not have to be. A three way switch is fundamentally different in its operation from a regular two way switch. In the 1st diagram below a 2 wire nm cable supplies power from the panel to the first switch box. You must completely forget about the notion of a switch being a simple openclosed circuit and look at the diagram of the circuitry of this modern alternative.
The black line wire connects to the common terminal of the first 3 way switch. 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. This 3 way switch wiring diagram shows how to wire the switches and the light when the power is coming to the light switch. Take a closer look at a 3 way switch wiring diagram. In this diagram the electrical source is at the first switch and the light is located at the end of the circuit. The goal is to place two switches at separate locations which control the exact same device.
Remove the white wire marked with black tape from the common screw of the left 3 way switch and splice it together with two short lengths pigtails of black wire with the same gauge. Wiring diagram 3 way switch with light at the end. 3 way switch wire diagram power to light switch. Three wire cable runs between the switches and 2 wire cable runs to the light. Use the smaller easier to work and less expensive 14 14 gauge copper romex cable if the circuit is protected by a 15 amp fuse or circuit breaker. Pick the diagram that is most like the scenario you are in and see if you can wire your switch.
Turn the power off at circuit breaker. With these diagrams below it will take the guess work out of wiring. Basic 3 way switch diagram how to wire 3 way light switch step by step. Typical 3 way switch wiring nm cable. Traveler wires are interchangeable. Very few three way circuits switch loads on a 20 amp circuit.
In this diagram the incoming hot wire attaches to the first switchs common dark colored terminal. For example they can be arranged so that the feed cable runs to the first three way switch then to the light fixture box then to the second three way switch. Reconnect one pigtail to the 3 way common screw. The black and red wires between sw1 and sw2 are connected to the traveler terminals. This entry was posted in indoor wiring diagrams and tagged 3 way circuit 3 way switch 3 way switch variation diagram do it yourself hot receptacle house wiring receptacle wiring wiring diagram.
Gallery of How To Wire A Three Way Switch Circuit
