How to Wire a Single-Switch Ceiling Fan

Most new ceiling fans can be wired to either a single switch or a double switch. With single-switch wiring, power to the fan is controlled by a standard single-pole wall switch, like a regular light switch. The fan has power when the switch is on, while the fan speed and the light (if the fan has one) are controlled by pull chains on the fan itself or by a remote-control device. With double-switch wiring, a fan with a light is connected to a double wall switch that controls power to the fan and the light separately.

Brushed Metal Ceiling Fan
credit: jimbycat/iStock/GettyImages

If you're replacing an old fan or light fixture and the wiring in the fixture box contains only two or three wires (black, white, and green or bare copper), you must use single-switch wiring for the new fan; double-switch wiring requires a circuit with four wires (black, red, white and green/bare copper). However, some fans can be controlled by special switches that offer double-switch control at the wall. These typically are wired in the single-switch configuration.

Woman using pull chain on ceiling fan
credit: Philip Schmidt
Wiring a ceiling fan is a simple electrical project.
Switching off circuit breaker
credit: Leigh Schmidt
Switch the circuit breaker to the OFF position.

Step 1

Turn off the power to the fan circuit by switching off the appropriate breaker in your home's service panel/breaker box.

Testing wires for power with voltage tester
credit: Leigh Schmidt
Test the circuit wires for power with a voltage tester.

Step 2

Confirm the power is off by testing the appropriate wires in the fan or fixture electrical box. If there is an existing fan or fixture mounted to the box, detach the motor unit or cover, as needed, without touching any wires.

Use a non-contact voltage tester to check each wire in the box for voltage. If the tester indicates voltage anywhere in the box, return to the service panel and turn off the appropriate breaker (you may need to turn off more than one breaker). Test the wires with the wall switch in both the ON and OFF positions. Remove the old fan or fixture, if applicable.

Stripping wire end with wire strippers
credit: Leigh Schmidt
Trim and strip the wire ends with wire strippers, if necessary.

Step 3

Straighten each circuit wire coming from the box, and make sure it is in good condition, with about 1/2 to 3/4 inch of insulation stripped from the end. If necessary, trim any damaged portion of wire and re-strip the end, using wire strippers.

Grounding wires for circuit, fan, and electrical box
credit: Leigh Schmidt
Ground the circuit, fan, and metal electrical box.

Step 4

Connect the ground wire from the ceiling fan (often this is connected to the fan's hanger bracket) to the circuit ground wire and to the electrical box (if it is metal), using a pigtail wire to connect to the box. Join the three wires with an appropriately sized wire connector. Secure the pigtail wire to the box with a grounding screw or clip.

Joining fan and circuit wires with wire connectors
credit: Leigh Schmidt
Join the wires with wire connectors.

Step 5

Connect the remaining ceiling fan wires to the circuit wires following the fan manufacturer's wiring diagram. In a typical installation, the white (neutral) fan wire connects to the white (neutral) circuit wire, and the black (hot) fan wire connects to the black (hot) circuit wire. If the fan includes a light, there will be another hot wire, often colored blue or red (but it may be a different color); connect this and the black fan wire to the black circuit wire, using a single wire connector.

Mounting fan unit to fan bracket
credit: Leigh Schmidt
Tuck the wires into the box before mounting the fan motor unit.

Step 6

Tuck the wires into the box carefully. Complete the fan installation as directed by the manufacturer.

Single-pole switch wiring
credit: Leigh Schmidt
Connect each hot wire to one switch terminal.

Step 7

Complete the switch wiring, if you are replacing the old switch. In a typical installation, there are two cables in the box: One is the source cable providing incoming power; the other is the cable leading to the fan. Connect the black wire from each of the cables to one of the terminals on the switch (only one wire per terminal). Join the ground wires with a pigtail, and connect the pigtail to the ground screw on the switch. Use two pigtails if the box is metal, and connect one of them to the box. Connect the white wires together; they do not connect to the switch. Mount the switch to the box, and install the cover plate.

Switching on circuit breaker
credit: Leigh Schmidt
Switch on the breaker to restore power.

Step 8

Restore power to the circuit by switching on the circuit breaker. Test the fan for proper operation.

Philip Schmidt

Philip Schmidt

Philip Schmidt is author of Install Your Own Solar Panels, The Complete Guide to Treehouses, and 18 other home-related how-to books. A former carpenter, he has been a full-time writer and editor for over two decades, teaching DIYers about houses and everything we do with them.