The exact purpose of a red wire for a light fixture can vary. When you see a red wire in a light switch box it can mean two things.
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Red wire light fixture. Wrap the copper or silver ground wires from the light fixture around the ground screw. Then connect it to the supply ground wire of the junction box with a wire connector. While the light only has a black and white electrical wire some manufacturers include an addition wire. Or it could be the red wire is the wire going to the fixture and the black wires are the live wires. The red wire from the switch loop is connected to the hot terminal on the light and at the other end to the new switch. Well cover the easier scenario first.
Check the wire with a non contact voltage tester with the power and. At the fixture the white connects to the neutral terminal on the light. If you change a light fixture and find a red wire in the electrical box chances are the black wire from the fixture needs to go to the red wire in the box. Connect the black or red current wires and the white neutral wires. It could be there is or once was a three way switch in play. The red wire the red wire is most likely a spare wire that was intended to be used when wiring for a ceiling fan.
The red wire as a spare wire. If necessary use wire strippers to remove the insulation from the light fixtures electric wires. The wall switch typically when a ceiling fan is installed the red wire is most commonly used for the light and the black is commonly for the fan motor. How to connect the red wire for a ceiling light fixture. Red wire on the light fixture step 1 turn off the power to the light circuit then check the wires with a voltage tester to verify there is no voltage reading. Normally youll see a red wire in places you would expect a ceiling fan.
Wiring a new light from a switched outlet. Except in rare cases it is a hot wire or a switched hot wire. The white wire is capped with a wire nut in the new switch box. Open the package of wire nuts and installation screws that came with the new light fixture.
Gallery of Red Wire Light Fixture
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