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The Red Wire and the Blue Wire


By Dave Rongey - Summary:

How to Connect the Red Wire and the Blue Wire for a Ceiling Fan – Installing an Outdoor Ceiling Fan Wiring an the Electrical Wiring Connections can be a little tricky especially when it comes to the red wire and the blue wire.


Ceiling Fans with Red and Blue Wires

Electrical Question: My outdoor ceiling fan has 3 wires, but box in ceiling also has red wire. What do I do with the red wire? I have whites connected, blacks connected and greens. I do not need the fan’s blue wire for light kit.

This electrical wiring question came from: Beverly, from Melbourne, Florida

Dave’s Reply:
Thanks for your electrical wiring question Beverly

How to Connect the Red Wire and the Blue Wire for a Ceiling Fan

Skill Level: Beginner to Intermediate.
Tools Required: Basic Electricians Pouch Hand Tools, a non-aluminum ladder and Voltage Tester.
Estimated Time: Depends on personal level experience, ability to work with tools and access to the ceiling fan.
Precaution: Identify the ceiling fan circuit, turn it OFF and  Tag it with a Note before working with the wiring.

Installing an Outdoor Ceiling Fan Wiring an the Electrical Wiring Connections can be a little tricky especially when it comes to the red wire and the blue wire.

Outdoor Ceiling Fan Wiring

  • If the ceiling fan does not have a light then the red wire and the blue wire may be capped off using a wire nut.
  • Most ceiling fans come pre-wired  with a blue wire therefore a light kit may be added as an option.
  • Some home are pre-wired with a separate red wire from the wall switch box to the ceiling fan box to allow from a separate switch that will control the light fixture.
  • The separate switch may also be a dimmer control that is compatible with the installed lamps.

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