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Electrical Wiring for a Bath Exhaust Fan

How to Install Bathroom Exhaust Fan Electrical Wiring – Fully Explained Photos and Wiring Diagrams for Bathroom Electrical Wiring with Code Requirements for most new or remodel projects.

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Electrical Wiring for a Bath Exhaust Fan

Electrical Question: I am installing a Hunter model number 83003 exhaust fan, light, night-light combo.

Thanks in advance for any help.
Background: Rick, a Homeowner from Pocahontas, AR.

Additional Comments: Very nice website, if it helps me out with my projects I will gladly donate when I have the extra funds. Right now its really tough.

Dave’s Reply:
Thanks for your electrical question Rick.

I have provided the following links that lead to fully detailed information on this website that will assist you with your electrical question:
How to Install Bathroom Exhaust Fan Electrical Wiring

Bathroom Electrical Wiring

Fully Explained Photos and Wiring Diagrams for Bathroom Electrical Wiring with Code Requirements for most new or remodel projects.

Electrical Wiring

Lighting For The Home
Lighting Electrical Codes

Light Switch Wiring
Wiring Diagrams

Electrical Wire for the Home

For more information about Bath Exhaust Fan
Bath Exhaust Fan

This link is helpful as a Homeowner
Do-It-Yourself Electrical

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The following may also be helpful for you:

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.

Learn more about Home Electrical Wiring
with my Online Video Course:
Basic Home Electrical Wiring by Example

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

Electrical Tips to Help You Wire it Right

The Safest Way to Test Electrical Devices and Identify Electric Wires!

The Non-Contact Electrical Tester
This is a testing tool that I have had in my personal electrical tool pouch for years, and is the first test tool I grab to help identify electrical wiring. It is a Non-contact tester that I use to easily Detect Voltage in Cables, Cords, Circuit Breakers, Lighting Fixtures, Switches, Outlets and Wires. Simply insert the end of the tester into an outlet, lamp socket, or hold the end of the tester against the wire you wish to test. Very handy and easy to use.

The Quickest Way to Check for Faulty Electrical Wiring!

The Plug-In Outlet Tester
This is the first tool I grab to troubleshoot a problem with outlet circuit wiring. This popular tester is also used by most inspectors to test for power and check the polarity of circuit wiring.
It detects probable improper wiring conditions in standard 110-125 VAC outlets Provides 6 probable wiring conditions that are quick and easy to read for ultimate efficiency Lights indicate if wiring is correct and indicator light chart is included Tests standard 3-wire outlets UL Listed Light indicates if wiring is incorrect Very handy and easy to use.

Strip Off Wire Insulation without Nicking and Damaging the Electric Wire!

The Wire Stripper and Wire Cutter
My absolute favorite wire stripping tool that I have had in my personal electrical tool pouch for years, and this is the tool I use to safely strip electrical wires.
This handy tool has multiple uses:
The wire gauges are shown on the side of the tool so you know which slot to use for stripping insulation.
The end of the tool can be used to grip and bend wire which is handy for attaching wire onto the screw terminals of switches and outlets..

The wire stripper will work on both solid and stranded wire. This tool is Very Handy and Easy to Use.

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FAQs Frequently Asked Questions and Comments

4 Responses to “Electrical Wiring for a Bath Exhaust Fan”
  1. Tanya says:

    Wiring a Bathroom Fan Light Heater Combo
    I guess what I am doing must be unique, because I can’t find information anywhere.

    So here goes, I have a small bathroom, I need 4 switches. In order to save space, I opted for 2 double switches. So, I have a two gang box with 4 switches.

    I have a bath fan/light/heater combo and a vanity light. The plan is to have one switch for each with a separate breaker for the combo unit. The other breaker will have the bath outlets and the vanity light.

    The hardest part is done. The combo works perfectly. Switch 1 (top & bottom) has the heater and the fan. Switch 2 bottom has the light. The one that should be easy is the one I am having problem with. This is a duplex light switch that I want to split, the vanity light will be on the top (from a different breaker) I have broken off the tab. On a typical switch you use both black wires, one on each screw, tie the whites together, tie the grounds together and ground it. By splitting it, I only have one screw for the hot…..WHERE DO I PUT THE OTHER HOT???

  2. Dave Rongey says:

    Wiring a Double Switch for a Bathroom Combo Fan
    Hi Tanya, Great Question.
    The side of the switch with the tab in place allows one circuit to supply power for both switches.
    When you removed the tab you should be left with two screws on each side of the switch, four screws total.
    The top and bottom switches may now be wired for two power circuits, the top switch for one circuit, the bottom switch for the second circuit. The circuit wires attach to the side of the switch where the tab has been removed.
    Side Note: Be sure to keep track of your neutrals and keep them separate for each circuit and the appropriate device, unless the two circuits are part of a multi-wire circuit where the neutral wire is shared. (I explain this in my book).
    I hope this helps you,

  3. Tanya says:

    OK, may be I did not explain it properly. For the second power source (the top), I have one HOT screw and two black wires. (As, I call it, power in, power out) and one neutral screw.

    Do I put one black wire in the screw and one in the back stab location? The MAIN question is…where or how do I attach the second black wire?

  4. Dave Rongey says:

    Hi Tanya,
    To be precise, you will need to provide the Brand and Model or Part Number of the switch you are wiring. A photo would also be helpful, which could be sent using the Question Form instead of the comment form.
    Please Note: It is possible that you have a double switch that does not allow two separate circuits, and is only limited to one power source, therefore you may need to locate a different switch.