Three Way Switch Wire Diagram
White black and red plus a bare ground wire. The cable should also have a ground wire or a total of four wires in the cable.
Feed a length of 14 3 type nm cable or 12 3 if youre connecting to 12 gauge wire between the two boxes.
Three way switch wire diagram. All of the switches shown below are 3 way. The system also requires three way switches. How to wire a 3 way light switch and connect it to a light fixture is one of those diy projects a homeowner can tackle.
By doing it yourself you can also save a lot of money and make a significant improvement to your home. Interested in a 4 way switch wiring diagram. With these diagrams below it will take the guess work out of wiring.
Family handyman in the diagram above the incoming hot wire attaches to the first switchs common dark colored terminal. The 14 3 cable has three insulated conductors. Its likely youll also need to replace the existing switch box with a larger one to accommodate the extra wires for the three way switch.
3 way switches have three terminals one common usually black color and one pair of travelers usually brass color. With this easy to follow 3 way wiring diagram changing from a single pole to a 3 way switch allows you to turn a light on from multiple locations such as at the top and. Pick the diagram that is most like the scenario you are in and see if you can wire your switch.
Typical 3 way switch wiring nm cable. Wiring diagram 3 way switch with light at the end in this diagram the electrical source is at the first switch and the light is located at the end of the circuit. The power wire the neutral wire and the traveller or switch wire.
Take a closer look at a 3 way switch wiring diagram. A 3 wire nm connects the traveler terminals of the first and second 3 way switch together. 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.
Like the diagram above. This three way switch wiring diagram shows how to wire the switches and the light when the power is coming to the light switch. Three way switches require a three wire cable.
The hot wire from light always goes to the common terminal of the second switch. With conventional wiring the common wire from one switch connects to line the common wire from the other switch connects to the load lights. The black line wire connects to the common terminal of the first 3 way switch.
What is common in the diagrams above and with any 3 way switch circuit is that the power hot wire coming into the circuit will always go to the common terminal of the first switch. Traveler wires are interchangeable on each switch. In the 1st diagram below a 2 wire nm cable supplies power from the panel to the first switch box.
Three wire cable runs between the switches and 2 wire cable runs to the light. This might seem intimidating but it does not have to be.
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