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Kitchen Exhaust Fan Wiring

How are the wires connected to a kitchen exhaust fan? How to wire a kitchen exhaust fan that is installed above the kitchen range or cook top stove.

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Kitchen Exhaust Fan Wire
Electrical Question: How are the wires connected for a kitchen exhaust fan?

This electrical wiring question came from: Steve located in Texas.

Dave’s Reply:
Thanks for your electrical wiring question Steve.

How to Wire a Kitchen Exhaust Fan

Application: Wiring a Kitchen Exhaust Fan.
Skill Level: Intermediate to Advanced. This electrical wiring project is best performed by a Certified Electrician or a Licensed Electrical Contractor.
Tools Required: Basic Electricians Pouch Hand Tools and a Voltage Tester.
Estimated Time: Depends on personal level experience, ability to work with tools and the access to the wall switch for the exhaust fan and if a larger switch box will be required.
Precaution: The kitchen exhaust fan circuit should be identified, turned OFF and Tagged with a Note before working with the wiring.
Notice: Modifying existing wiring or installing additional bathroom electrical wiring should be done according to local and national electrical codes with a permit and be inspected.

How to Wire a Kitchen Exhaust Fan

Specific to this Electrical Question: The wiring for the exhaust fan as described in this question may not be typical or standard due to the described problem. Therefore I recommend a close evaluation of the exhaust fan and the provided installation instructions and wiring diagram. If it is found that the exhaust fan is faulty or is not compatible with your application then a replacement may be desired.

EXAMPLE: The following is an example of How to Wire a 120volt Kitchen Hood Exhaust Fan.

More about Electrical Wiring for a Kitchen Hood Exhaust Fan

kitchen exhaust fan

More about  How to Wire a Kitchen Hood Exhaust Fan

How to Install Kitchen Electrical  Wiring

Kitchen Electrical Wiring

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

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Great for any Home Wiring Project.
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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
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How to Troubleshoot and Repair Electrical Wiring
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NEC Codes for Home Electrical Wiring
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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 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

9 Responses to “Kitchen Exhaust Fan Wiring”
  1. Randall Long says:

    I have a gas range and needed power for the igniters & clock, but it was not recommended to tap into the gcfi counter outlets, so I wired up and bypassed the GFCI in the junction box.
    Now I have counters with GFCI and the range off the GFCI but both are on the same 20 amp breaker. Dose this sound right or do I need to redue before the inspection.
    Thanks R.Long, Fernwood,ID.

  2. Dave Rongey says:

    Hi Randal,
    Typically a range igniter outlet may be fed from one of the 20 amp GFCI counter top appliance circuits. You can verify this with your electrical inspector, but this should not be a problem.
    I hope this helps,

  3. harry says:

    I have the same question as Shivkiranm has above. I am looking for the diagram and how to connect the fan. Thanks in advance

  4. Dave Rongey says:

    Hi Harry,
    Wiring a Kitchen Exhaust Fan
    Could you please provide more information about the specific kitchen exhaust fan that you have?
    Such as:
    The Manufacturer.
    The Model Number.
    The Voltage.
    Also, describe if the exhaust fan has a one or two speed motor, and if there is one or more light bulbs inside the unit.
    This information will be very helpful,

  5. Harry says:

    Hello Dave
    Thanks for your quick response.
    Lets see if I can answer all your questions.
    1. Its a Crompton Greaves Exhaust Fan.
    2. Not sure about the model number but it looks Crompton Greaves Clean Air Exhaust Fan Old one.
    3. The standard voltage here is 240 volts.
    4. There is no Bulb. No led in the FAN.
    Its a Old model Exhaust Fan which was working fine till yesterday and I had to remove the wiring and remove the fan as had some renovation work going on. Now the work is done and I forgot the connection.
    The Fan works like a two way. It has a low and High Switch. When the fan is in low state it does exhaust the air out, and when on high it blows the air in like a fan.
    The Fan has 3 wires coming out: Red, Green, and Black.
    The Switch has 3 connectors to connect the wires.
    I am not sure where to connect the main wires ( 240 volts + Neutral ) in the switch along with the fan wires.
    I am all confused and to add more to it. There is one copper wire nailed to the outside of the window not sure if it has to do something with the fan wires.
    Please help me out with the connections of the 3 fan wire as it should work the same way as it use to work. Both ways Fan + Exhaust.
    Thanks in advance.

  6. Dave Rongey says:

    Thank you for the information about your Exhaust Fan Harry.
    Based on your information and the limited information available about the Crompton Greaves Clean Air fan I would think that if the rotation of the fan is incorrect then the two circuit wire connections could be reversed to correct the rotation. The home electrical system is 240 volts and the earth ground, so the green wire would be the earth connection.
    I cannot speculate about the copper wire that is outside the window, however since it is a copper wire it would be good to perform electrical testing to help obtain a positive purpose and identification.
    I hope this helps,

  7. Harry says:

    Hello Dave.
    Thank you for the information. But i was looking for the diagram on how to connect the fan to the two way switch. so that it can work like two way as mentioned above.
    I am aware that the green wire is earthing, but I am looking for the connection to the switch.
    Thank You

  8. Dave Rongey says:

    Hi Harry,
    Wiring Two Switches to Control an Exhaust Fan
    To wire the exhaust fan so it will operate from two separate switch locations please refer to the Three Way Switch Wiring Diagrams. Note: Here in the USA this type of control is identified as Three Way Switches, even though there are only two switches involved.
    The adaptation of three way switch control in a 240 volt circuit would be to wire one wire of the 240 volt circuit through the three way switches, or use a low volt control circuit which would control a 2-pole relay, and run the 240 volt circuit through the relay contacts.
    I hope this helps,

  9. Harry says:

    Thanks Dave will try that.