Electrical – How to wire a new light fixture with a red wire

electrical

When replacing an old chandelier with a new ceiling, there was one red wire, two white wires tied together and two black wires tied together.

I had capped the red wire and tied in the remaining wires to their respective colors. When I had turned on the power, the light had turned on even though the dimmer switch had been turned off.

How do I correct this?

Best Answer

Most often the red wire in a lighting circuit is a switch leg. Very likely there is a black/white pair coming in from the panel, black/white/red going to the switch box, and then black/white continuing from the switch box to some other outlet.

If this is the case, the black is the hot wire from the panel and will be attached to one side of the switch, the red will be attached to the other side of the switch, and returns power to the light box when the switch is on.

Personally I would take things back apart and test it out with a meter to confirm, but you can also take off the switch cover and check which color wires are hooked up to it. If it follows the pattern I described, then moving the black wire of your new fixture over to the red wire in the box should solve the problem.