ask the electrician
Electrician Training Electrical Certification wiring recessed light fixtures Electrical Wiring Electrical Troubleshooting and Electrical Repairs wire outdoor light fixture Home Electrical Wiring Diagrams
wiring home generator and transfer switch wiring a 220 volt range cord outlet Wiring for GFCI Outlets Wiring Outlets and a Switched Outlet Wiring and Installing Ceiling Fans and Remote Controls wire dimmer switch wiring diagrams for switches wiring a dryer cord and 220 outlet circuit breaker panel
Electrical Wire and Cable

Question – Ceiling Fan Light Kit Wiring

Can a dimmer switch be installed on a ceiling fan light?

Electrical Video #1

Electrical Wiring Tips

Helping You to Wire It Right!

See more Home Electrical Wiring Videos

Check out my YouTube Channel, and Subscribe!

See the Electrical Wiring Video #2 Below:

I want to install a ceiling fan at a location where the light was controlled with a dimmer switch. In the switch box there is a black wire, white, red and a bare (ground) wire. The dimmer switch is connected black from switch to black in box, red to white, and green to ground. In the ceiling box, there are two black wires and two white wires. The white wires are tied together. What is the correct wire configuration for wiring the ceiling fan with a light kit.

[ad#block]Please read all of this.
From the information you sent it sounds like you have a junction box somewhere between the switch box and the ceiling fixture box. Without a voltage tester or continuity tester, we can only guess at two possible wiring configurations.
#1 IF there was ever a ceiling fan attached to this ceiling fan box, THEN here is what it seems to be:
At the Switch Box:
The Black is the 110 Volt Hot coming in.
The Red and White are Switch Legs leading up to the fixture box through a junction box.
At the Ceiling Fixture Box:
The Whites should be the Neutral, only if you know that they were attached to the original fixture.
If that is the case, then the other two Black wires would be the Switch Legs at the switch box.
#2 IF there was NEVER a Ceiling Fan attached to this Ceiling Box before THEN here is what it seems to be:
At the Switch Box:
As the dimmer was wired before, Black to one terminal of a Switch and the White to the other terminal of a Switch.
At the Ceiling Fixture Box:
The two Black wires: one would be Hot and one would be Neutral
Again – the exact identification of your wiring can only be verified with a test instrument as stated above.
As for your Ceiling Fan:
A normal dimmer cannot be used to control both the fan and the lights because it will harm the fan motor. I would suggest you use a standard single pole switch and use the pull chains on the ceiling fan to operate the lights and the fan motor speeds.
You will need to make sure the ceiling fixture box is approved for a ceiling fan. Many older fixture boxes are not approved for this due to a lack of support capabilities. You may need to go to the hardware store and purchase the correct box depending on the wood framing structure support with the ceiling joists that you have in your ceiling, and you may need to install a wood support block in the ceiling if there is access to the area.
I will be adding a few pages to the web site specifically about ceiling fans soon.
Given this information, my advice is to be sure to test the wires. If the dimmer is “on” and the two black wires produce 110 volts, then the #2 example is possibly the wiring configuration.
Test to be sure. If you are not sure about any of this please call a qualified licensed electrician.

The following may also be helpful for you:

Electrical Wiring Video #2

Home Electrical Wiring Videos about this Topic and More

Check out my YouTube Channel, and Subscribe!

Learn more with my Home Electrical Video Course:

Basic Home Electrical Wiring by Example

Dave's Guide to Home Electrical Wiring:

» You Can Avoid Costly Mistakes! «

Here's How to Do It:
Wire It Right with the help of my Illustrated Wiring Book

Great for any Home Wiring Project.
  electrical wiring  

Complete Guide to Home Electrical Wiring

Perfect for Homeowners, Students,
Handyman, Handy Women, and Electricians
Wiring GFCI Outlets
Wiring Home Electric Circuits
120 Volt and 240 Volt Outlet Circuits
Wiring Light Switches
Wiring 3-Wire and 4-Wire Electric Range
Wiring 3-Wire and 4-Wire Dryer Cord and Dryer Outlet
How to Troubleshoot and Repair Electrical Wiring
Wiring Methods for Upgrading Electrical Wiring
NEC Codes for Home Electrical Wiring
....and much more.

Be Careful and Be Safe - Never Work on Energized Circuits!
Consult your Local Building Department about Permits and Inspections for all Electric Wiring Projects.

More articles about Switch Questions and Home Electrical Wiring:
« Previous Next »
Question – Cabin Wiring Methods Question – Ceiling Fan Installation and Dimmer Switches