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Thread: wire three phase motor with single phase power

  1. #1
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    wire three phase motor with single phase power

    How can i wire three phase motor with single phase power.

    motor has nine leads

  2. #2
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    You need to get a phase converter
    They say I shot a man named Gray and took his wife to Italy
    She inherited a million bucks and when she died it came to me
    I can't help it if I'm lucky



  3. #3
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    Quote Originally Posted by tmad13 View Post
    How can i wire three phase motor with single phase power.

    motor has nine leads

    Without a rotary phase converter, variable frequency drive, that accepts single phase input, or a static phase converter, 3 phase power will be required to run the motor.

  4. #4
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    Quote Originally Posted by tmad13 View Post
    How can i wire three phase motor with single phase power.

    motor has nine leads
    Well, technically you could WIRE a 3 phase motor with single phase power, it's just not going to run...
    __________________________________________________ ____________________________
    Many people are shocked when they discover I am not a good electrician...

  5. #5
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    180710-1633 EDT

    If you mechanically start it rotating, and sufficient torque can be provided relative to load, then it will run

    .

  6. #6
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    Quote Originally Posted by gar View Post
    180710-1633 EDT

    If you mechanically start it rotating, and sufficient torque can be provided relative to load, then it will run

    .
    Don't be giving out bad ideas... It will run but at what expense?
    They say I shot a man named Gray and took his wife to Italy
    She inherited a million bucks and when she died it came to me
    I can't help it if I'm lucky



  7. #7
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    Quote Originally Posted by Dennis Alwon View Post
    Don't be giving out bad ideas... It will run but at what expense?
    The cost of the motor when it burns up, plus the cost of down time while you replace it.
    __________________________________________________ ____________________________
    Many people are shocked when they discover I am not a good electrician...

  8. #8
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    May 2018
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    Boyertown, PA, USA
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    Quote Originally Posted by tmad13 View Post
    How can i wire three phase motor with single phase power.

    motor has nine leads
    Sell or return the 3ph motor, and buy the right motor for the available power and job it must do.

  9. #9
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    Vacaville CA USA
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    I recently did this for a gent who has a 3-phase, 3HP lathe and wanted variable speed operation. We bought a Variable Frequency Drive that is designed to accept single-phase power and deliver 3-phase. At low horsepower, these are not really expensive. You can do the same with larger motors and drives, just be sure the drive is designed to handle the job the motor is expected to perform.

  10. #10
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    Quote Originally Posted by gar View Post
    180710-1633 EDT

    If you mechanically start it rotating, and sufficient torque can be provided relative to load, then it will run

    .

    Growing up, my dad had a jointer that had a three phase motor but we only had single phase power. He had a small fhp motor to get it going then ran the three phase motor on single phase. He was a woodworker and ran it like that for years.
    Ethan Brush - East West Electric. NY, WA. MA

    "You can't generalize"

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