The white wire from the switch connects to the black wire from the circuit power supply cable. The common screw of a 3 way switch is the odd color screw distinctly different in color from the other 2 main connection screws.
How To Wire A 4 Way Switch
Wiring a 3 way light fixture. The easiest way to add another light fixture is to connect the additional light to an existing lighting fixture that is controlled by the three ways switches. The ground wires all connect together as you have described however the neutral wire of the circuit and the return wire from the three way light switches must be properly. A 3 wire nm connects the traveler terminals of the first and second 3 way switch together. This is a scenario where you have 2 light switch locations that control a single light fixture unless. Wire black to black and white to white. The existing 2 wire black and white romex can still be used to connect a 3 way switch 2 and the light fixture.
The following will assist you with 3 way switches. The white wire from the circuit power supply cable is the grounded leg conductor aka. If your 3 way light switch 2 is connected between the power supply and the light fixture as is most common. Turn off the circuit breaker at the main panel that supplies power to the three wire cable intended for the. The ground wire is the bare copper wire and should be connected to the green grounding screw in the crossbar. The common terminal of the second 3 way switch connects to the light fixture s.
And make sure all of your ground connections are completed and securely fastened. There are several wiring scenarios for wiring 3 way switches. If the wiring to the switches has not been altered then it would be best to test the wiring at the light fixture box to identify the connections for the light fixture. At the ceiling box the ungrounded conductor aka. Have a helper hold the rest of the fixture while you connect the wires. In this diagram power enters the fixture box.
Red and blue wires link traveler terminals of both switches. Test the wires to verify that no power exists using a voltage tester. Connect the wires as they were in the old fixture. Place one probe of the tester on the. The black hot wire connects to the far right switchs common terminal. Finish your work and test.
Neutral for the fixture. Hot from the fixture connects to the black wire from the switch. The key is to identify where the power source is located. This 3 way light switch wiring diagram shows how to do the light switch wiring and the light when the power is coming to the light fixture. The black line wire connects to the common terminal of the first 3 way switch. Traveler wires are interchangeable on each switch.
How to attach a two wire lighting fixture to a three wire supply step 1.
Gallery of Wiring A 3 Way Light Fixture
