December 5, 2011 By Dave Rongey ©2007-2012Author - Licensed Electrical Contractor Filed under Exhaust Fan Wiring
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Wiring Bathroom Exhaust Fan Switches |
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Understanding Bathroom Exhaust Fan Switch Wiring
- I wasn’t paying close attention when I was taking the old one out.
- Now am not sure how to put it back together.
- In the picture the switches come in on the left, the other circuit continues out on the right.
Thanks!
JP
This electrical question came from: JP, a Handyman from Traverse City, MI
See more about Home Wiring for Michigan
Additional Comments: Great website! Deep content, good links, easy to navigate.
Thanks!
Dave’s Reply:
Thanks for your electrical question JP.
The Deep Dark Secrets of Bathroom Exhaust Fan Switch Wiring
- Bathroom electrical wiring secret number one – don’t tare everything apart without identifying the wires first.
- The wiring will need to be identified for the incoming and out going power, then the switch legs.
- Once these are identified then the electrical wiring connections and switch wiring will be very straight forward.
- Hook it all back up, take a warm shower and enjoy your exhaust fan.
The Following links will assist you with your electrical question:
Electrical Panel Circuit Listing
electrical circuit

Electric Circuit Listing
The size of the home electrical service panel is designed by calculating the square footage of the home and factoring in the code requirements for the electrical circuits that are required.
For more information about Bath Exhaust Fan
Bath Exhaust Fan
Bathroom Exhaust Fan
- Installing a bath exhaust fan
- Replacing your existing bathroom exhaust fan
This link is helpful as a Handyman
Do-It-Yourself Electrical
Be Careful and Be Safe - Never Work on Energized Circuits!
Consult your Local Building Department about Permits and Inspections for all projects.
For Best Results Consult a Licensed Electrical Contractor in Your Area



I have a exhaust fan in my bathroom,I don’t use it ,so I want to install a small ceiling fan. Can I disconnect wiring to exhaust fan and use this wiring on the ceiling fan ,so I can use the same wall switch?