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Electric Motor Overload Switch

By Dave Rongey - Summary:

The Causes of Electric Motor Overload: Understanding Internal Motor Overload Protection, Contributing causes that will cause a motor to reach an over heated condition.

Electric Motor Protection

Electrical Question: My standing fan works whenever I turn on the switch, but soon after it will stop automatically.

This electrical repair question came from: Ken, a Homeowner from Minneapolis, Minnesota.

Dave’s Reply:
Thanks for your electrical repair question Ken.

Internal Motor Overload Protection

Application: Repair a Fan Motor.
Skill Level: Beginner to Intermediate – Best performed by a Licensed Electrician.
Tools Required: Basic Electricians Pouch Hand Tools and Voltage Tester.
Estimated Time: Depends on personal level experience, ability to work with hand tools and electrical troubleshooting skills.
Precaution: Identify the circuit, turn it OFF and then Tag it with a Note before performing any wiring or inspections. Electrical troubleshooting is best performed by a qualified electrical contractor.

Understanding the Internal Motor Overload

The Causes of Electric Motor Overload

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2 Responses to “Electric Motor Overload Switch”
  1. Dave Rongey says:

    Hi Jeremy,
    The motor will require a dedicated 220 volt circuit that is rated for the label specifications for LRA Amperage, and a control switch to turn it on and off. This would be the primary requirement that you will need to consider. It may be more economical to get a portable fan or 3 speed Box Fan which will run fine on a 120 volt circuit.
    I hope this helps you!

  2. jeremy says:

    Im tring to make a shop fan out of an old blower motor i pulled out of my heat pump. Its a ph 1. 2 speed motor rated for 208/230 is there any way to easily make this happen without rewiring the back of my house? Im tring to save money doing it myself and so far its getting frustrateing. I really dont want to buy another motor being i have this one.