Wire a Attic Exhaust Fan to a Thermostat Control
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Wiring a Attic Exhaust Fan Electrical Question: How can I control an attic fan (120 volt) with 2 wires (black and white) with a regular 24 volt thermostat. I am having an issue with how to wire a White Rodgers Emerson model # 90 113 SPDT Relay which is mounted to a 4×4 box. How […] |
Wiring a Attic Exhaust Fan
Electrical Question: How can I control an attic fan (120 volt) with 2 wires (black and white) with a regular 24 volt thermostat. I am having an issue with how to wire a White Rodgers Emerson model # 90 113 SPDT Relay which is mounted to a 4×4 box.
How to Wire Attic Exhaust Fan
Lou asks:
I am trying to control an attic fan (120 volt) with 2 wires (black and white) with a regular 24 volt thermostat.
I am hving issue with how to wire White Rodgers Emerson model # 90 113 SPDT relay which is mounted to a 4×4 box.
I have 18 4 thermostat wire along with 12 2 wire for power and the 2 attic fan wires (black and white) connected to 4×4 box.
I have 5 wires coming from SPDT, (2 Black with 1 of black marked common, white, red, and brown).
I was told by rep from Emerson that white wire from SPDT was the hot wire.
I just need to know where to connect which wires to SPDT.
Thank you for your help.
This electrical wiring question came from Lou in Staten Island, Texas.
Dave’s Reply:
Thanks for your electrical wiring question Lou.
How to Wire a Attic Exhaust Fan
Application: How to Wire a Attic Exhaust Fan.
Skill Level: Intermediate to Advanced – Best performed by a Licensed Electrical Contractor, or Licensed HVAC Contractor.
Electrical Tools Required: Basic Electricians Pouch Hand Tools, Voltage Tester, and appropriate Safety Gear.
Estimated Time: Depends on the personal level experience, ability to work with tools, install electrical circuit wiring, and the available access to the project area.
Electrical Safety: Identify the electrical power source to the Attic Exhaust Fan, turn it OFF and Tag with a Note before working with the electrical wiring.
Electrical Wiring Parts and Materials: Electrical parts and materials for the Attic Exhaust Fan should be approved for the specific project and compliant with local and national electrical codes.
Electrical Codes and Inspections: Installing or changing home electrical wiring should be done according to local and national electrical codes as adopted in Staten Island, Texas. A permit and inspections may also be required.
How to Wire a Attic Exhaust Fan in a Attic
This electrical wiring project is about How to Wire a Attic Exhaust Fan to a thermostat and control relay.
Attic Exhaust Fan Thermostat Control Wiring
Attic Exhaust Fan Thermostat and Control Relay
A Basic Control Circuit
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- Lou, from the information you have provided, see the basic control circuit wiring diagram above, which shows a typical control circuit.
- It is important to note how sizing all of components is vitally important.
- Also be aware that the controls and electrical wiring should be installed inside an electrical box or enclosure so that there are no exposed wires.
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Installing Attic Electrical Wiring
Is it standard for electrical wiring to be strung in a disorderly fashion in the attic? Methods of Proper Attic Electrical Wiring.
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I am installing a whole house fan that runs on 120v 250 watts max. The fan comes with 2 grounded plugs, 1 to fan, one to damper system to simply plug into an existing outlet in the attic…
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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.
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