Kitchen Exhaust Fan Wire
Electrical Question: How are the wires connected for a kitchen exhaust fan?
- The exhaust fan has three wires out of the winding: red wire, black wire, green wire.
- The way it is wired now when the switch is ON the air exhausts out of the kitchen.
- When the switch is OFF the fan blows air into the kitchen. The result is that the fan motor can blow in both directions.
- Can you explain the proper wiring for the two terminal connections, or provide a diagram that shows the wiring connections with the main circuit power.
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.
- Important: Not all exhaust fans are alike, so be sure to consult the documentation provided with your exhaust fan for specific circuit requirements and wiring instructions.
EXAMPLE: The following is an example of How to Wire a 120volt Kitchen Hood Exhaust Fan.
- Wiring a Kitchen Hood Exhaust Fan
- Typically there is an electrical circuit cable that is stubbed out of the wall just below the cabinet above the range or stove top.
- Locate the circuit breaker that controls the power to this cable and turn the circuit off before installing the exhaust fan.
- Note: The circuit cable used for the kitchen exhaust fan is typically fed from one of the kitchen outlet circuits.
- Use a voltage tester to ensure that the circuit power has been shut off before proceeding.
- The 120volt circuit wires include a green or bare ground wire, white neutral wire, and a black power wire.
- A junction box is located inside the exhaust fan with a blank cover over it. Remove the blank cover.
- The typical 120volt exhaust fan has a green ground wire, white neutral wire, and black power wire.
- A half inch opening is provided for the cable to enter into the junction box. Note: A plastic bushing or a cable connector should be installed to protect the circuit cable.
- Guide the circuit cable into the junction box of the exhaust fan while installing the exhaust fan to the cabinet.
- Once the exhaust fan is installed and secured into place, remove any excess lengths of cable and wire but be sure to allow enough wire to make the wire connections. Strip off one inch of insulation from each wire to prepare the wires for connections.
- Important: If a green ground wire is not provided with the exhaust fan then a green ground screw will be provided inside the junction box where the circuit ground wire must be attached.
- Connect the matching pair of wires together from the exhaust fan to the circuit cable. Trim off any excess or uneven length of wire. Install a twist on wire connector to each connection.
- Replace the blank cover over the junction box inside the exhaust fan.
- Restore the circuit power to the exhaust fan.
More about Electrical Wiring for a Kitchen Hood Exhaust Fan Over the Stove

- Kitchen Hood Exhaust Fan
- A kitchen exhaust fan located over the range or cook stove will provide a well ventilated kitchen to prevent odors from entering other areas of the home.
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.
Kitchen Exhaust Fan Wire
Electrical Question: How are the wires connected for a kitchen exhaust fan?
- The exhaust fan has three wires out of the winding: red wire, black wire, green wire.
- The way it is wired now when the switch is ON the air exhausts out of the kitchen.
- When the switch is OFF the fan blows air into the kitchen. The result is that the fan motor can blow in both directions.
- Can you explain the proper wiring for the two terminal connections, or provide a diagram that shows the wiring connections with the main circuit power.
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.
- Important: Not all exhaust fans are alike, so be sure to consult the documentation provided with your exhaust fan for specific circuit requirements and wiring instructions.
EXAMPLE: The following is an example of How to Wire a 120volt Kitchen Hood Exhaust Fan.
- Wiring a Kitchen Hood Exhaust Fan
- Typically there is an electrical circuit cable that is stubbed out of the wall just below the cabinet above the range or stove top.
- Locate the circuit breaker that controls the power to this cable and turn the circuit off before installing the exhaust fan.
- Note: The circuit cable used for the kitchen exhaust fan is typically fed from one of the kitchen outlet circuits.
- Use a voltage tester to ensure that the circuit power has been shut off before proceeding.
- The 120volt circuit wires include a green or bare ground wire, white neutral wire, and a black power wire.
- A junction box is located inside the exhaust fan with a blank cover over it. Remove the blank cover.
- The typical 120volt exhaust fan has a green ground wire, white neutral wire, and black power wire.
- A half inch opening is provided for the cable to enter into the junction box. Note: A plastic bushing or a cable connector should be installed to protect the circuit cable.
- Guide the circuit cable into the junction box of the exhaust fan while installing the exhaust fan to the cabinet.
- Once the exhaust fan is installed and secured into place, remove any excess lengths of cable and wire but be sure to allow enough wire to make the wire connections. Strip off one inch of insulation from each wire to prepare the wires for connections.
- Important: If a green ground wire is not provided with the exhaust fan then a green ground screw will be provided inside the junction box where the circuit ground wire must be attached.
- Connect the matching pair of wires together from the exhaust fan to the circuit cable. Trim off any excess or uneven length of wire. Install a twist on wire connector to each connection.
- Replace the blank cover over the junction box inside the exhaust fan.
- Restore the circuit power to the exhaust fan.
More about Electrical Wiring for a Kitchen Hood Exhaust Fan Over the Stove

- Kitchen Hood Exhaust Fan
- A kitchen exhaust fan located over the range or cook stove will provide a well ventilated kitchen to prevent odors from entering other areas of the home.
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.
Wiring a Range Hood Exhaust Fan
Electrical Question: I am installing a new range hood exhaust fan, how can I get power to it?
- I’m putting in a new range hood and I’m wondering how to access the house power.
- Would it work to add a junction box to the house conduit and run the Romex extension from there?
- That looks like three black together, three white together, and three grounds together. What do you think?
This electrical wiring question came from: Paula, a Handy woman from New York, NY.
Additional Comments: Thanks for the help.
Dave’s Reply:
Thanks for your electrical wiring question Paula.
How to Locate Electrical Power for a Range Hood Fan

Application: Wiring a Kitchen Exhaust Fan onto an Existing 120 volt Circuit.
Skill Level: Intermediate to Advanced – Best installed by a Licensed Contractor or Certified Electrician.
Tools Required: Depends on the exact scope of work. Electricians Tools including a Pouch Hand Tools and Voltage Tester.
Estimated Time: Depends on the personal level experience and ability to work with tools and access to the wiring.
Precaution: Identify the existing circuit, turn it OFF and then Tag it with a Note before performing any wiring.
Notice: Installing additional electrical wiring should be done through the local building authority, installed according to applicable local and national electrical codes, with a permit, and have the required inspections.
Locating Power for a Range Hood Fan
- Paula, if the installed electrical wiring is in conduit then any added electrical wiring should be in conduit as well.
- This would be verified by calling your local building department.
- The existing conduit and wiring in question would require identifying each circuit to understand what these existing circuits serve and if they would have the additional capacity or even allow being branched off of. Some dedicated circuits should not be tapped into.
- A typical range hood exhaust fan may be fed from one of the 120 volt kitchen appliance circuits. There may also be a 120 volt outlet behind the range which can be used to supply the power as well.
More about Wiring a Range
Wiring a Range

- Wiring a Kitchen Range Power Cord
- Fully Described Electric Range Installation with a typical 220 Volt electric power cord wiring system. You may find yourself with either a 3-wire or 4-wire electric range.
- Lets look at how the electric range is wired and what to do if your cord does not match the plug.
Electrical Junction Boxes

- Electrical Junction Boxes for Home Wiring
- Understanding electrical junction boxes and what they are used for.
- Home electrical wiring is the process of installing electrical wire to a location that will serve electrical devices or an appliance.
- One very important component is the box where the wire will be installed.
- The type and size of the home wiring electrical boxes will depend upon the circuit size, application and its location.
For more information about Home Wiring
Home Wiring

- Home Wiring
- Basic Home Wiring Diagrams with Pictures
This link is helpful as a Handy Woman
Do-It-Yourself Electrical
Wiring a Range Hood Exhaust Fan
Electrical Question: I am installing a new range hood exhaust fan, how can I get power to it?
- I’m putting in a new range hood and I’m wondering how to access the house power.
- Would it work to add a junction box to the house conduit and run the Romex extension from there?
- That looks like three black together, three white together, and three grounds together. What do you think?
This electrical wiring question came from: Paula, a Handy woman from New York, NY.
Additional Comments: Thanks for the help.
Dave’s Reply:
Thanks for your electrical wiring question Paula.
How to Locate Electrical Power for a Range Hood Fan

Application: Wiring a Kitchen Exhaust Fan onto an Existing 120 volt Circuit.
Skill Level: Intermediate to Advanced – Best installed by a Licensed Contractor or Certified Electrician.
Tools Required: Depends on the exact scope of work. Electricians Tools including a Pouch Hand Tools and Voltage Tester.
Estimated Time: Depends on the personal level experience and ability to work with tools and access to the wiring.
Precaution: Identify the existing circuit, turn it OFF and then Tag it with a Note before performing any wiring.
Notice: Installing additional electrical wiring should be done through the local building authority, installed according to applicable local and national electrical codes, with a permit, and have the required inspections.
Locating Power for a Range Hood Fan
- Paula, if the installed electrical wiring is in conduit then any added electrical wiring should be in conduit as well.
- This would be verified by calling your local building department.
- The existing conduit and wiring in question would require identifying each circuit to understand what these existing circuits serve and if they would have the additional capacity or even allow being branched off of. Some dedicated circuits should not be tapped into.
- A typical range hood exhaust fan may be fed from one of the 120 volt kitchen appliance circuits. There may also be a 120 volt outlet behind the range which can be used to supply the power as well.
More about Wiring a Range
Wiring a Range

- Wiring a Kitchen Range Power Cord
- Fully Described Electric Range Installation with a typical 220 Volt electric power cord wiring system. You may find yourself with either a 3-wire or 4-wire electric range.
- Lets look at how the electric range is wired and what to do if your cord does not match the plug.
Electrical Junction Boxes

- Electrical Junction Boxes for Home Wiring
- Understanding electrical junction boxes and what they are used for.
- Home electrical wiring is the process of installing electrical wire to a location that will serve electrical devices or an appliance.
- One very important component is the box where the wire will be installed.
- The type and size of the home wiring electrical boxes will depend upon the circuit size, application and its location.
For more information about Home Wiring
Home Wiring

- Home Wiring
- Basic Home Wiring Diagrams with Pictures
This link is helpful as a Handy Woman
Do-It-Yourself Electrical
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