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Thread: Mystery Motor.

  1. #1
    Join Date
    Dec 2012
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    Rancho Cucamonga, CA
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    Mystery Motor.

    Does anyone know how o tell the size of a motor without any nomenclature? I could just take it in but wanted to know your thoughts. It's off an old condenser. I think it's probably a 1/4 horse.

  2. #2
    Join Date
    Jan 2006
    Location
    muncie Indiana
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    510
    746 watts equals 1 hp. This will get you close. Most motors have a power factor... This is the efficiency rating of the motor.

  3. #3
    Join Date
    Dec 2002
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    Houston,Tx.
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    15,850
    Quote Originally Posted by Justhowe View Post
    Does anyone know how o tell the size of a motor without any nomenclature? I could just take it in but wanted to know your thoughts. It's off an old condenser. I think it's probably a 1/4 horse.
    No mfg. name or model number on the unit?
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  4. #4
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    Oct 2010
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    Anderson, South Carolina, United States
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    There is a way to measure the rotor to tell what hp. Don't have the file but there is a thread on the subject from a couple months ago.

  5. #5
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    Oct 2010
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    Anderson, South Carolina, United States
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  6. #6
    Join Date
    Dec 2012
    Location
    Rancho Cucamonga, CA
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    22
    Thanks boys, that link helped a lot. I measured the loops and stack height and came up with 1/4 horse. It has eight poles and a stack of 1.6".

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