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    steelheadwill's Avatar
    steelheadwill Posts: 5, Reputation: 2
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    #1

    Nov 3, 2009, 04:09 AM
    Connect 240V 3 prong motor to generator W/ 240 4 prong outlet?
    As summarized, I'd like to run a 240 volt motor with 3 prong twistlock plug off my
    Generator that has a 240V 4 prong twistlock outlet,
    Have purchased a 4 prong dryer plug & cord. Not sure what function the extra lead performs, any help is greatly appreciated, Thanks...
    steelheadwill's Avatar
    steelheadwill Posts: 5, Reputation: 2
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    #2

    Nov 3, 2009, 04:11 AM

    Apologies, searched for previous posts,
    Couldn't find any until I posted Question, Thanks
    steelheadwill's Avatar
    steelheadwill Posts: 5, Reputation: 2
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    #3

    Nov 3, 2009, 04:43 AM

    Posts did not clearly answer my question,
    Answers would be appreciated!!
    medic-dan's Avatar
    medic-dan Posts: 321, Reputation: 23
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    #4

    Nov 3, 2009, 08:43 AM

    On the generator you have 4 leads. Two are hots, a neutral, and a ground. On the motor you should have, two hots and a ground. A 240v motor does not need a neutral, some appliances, or if you want to run anything 120v, you will need a neutral.

    Why did you get the dryer plug/cord?

    To just run a motor get the proper 4 prong twist lock plug that fits your generator and put it on the cord to the motor. You do not connect anything to the neutral connection, leave it blank.
    steelheadwill's Avatar
    steelheadwill Posts: 5, Reputation: 2
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    #5

    Nov 4, 2009, 05:12 AM

    Thanks MEDIC-DAN,
    Got the 4 prong dryer cord as that is what fits the generator, just needed to be sure what
    leads went to what prongs,
    I gather that red=hot, black=hot, green=ground, and white=blank.
    Appreciate your help!!
    jandsvista's Avatar
    jandsvista Posts: 1, Reputation: 1
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    #6

    Dec 21, 2011, 09:54 PM
    I have a welder I'm wanting to run on a 240v 4 prong plug. The welder runs on a 240v 3 prong. Do I just to the same thing? Use the 2 hots and not neutral wire?
    steelheadwill's Avatar
    steelheadwill Posts: 5, Reputation: 2
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    #7

    Dec 22, 2011, 03:14 AM
    I would first check you welders amperage draw,
    https://www.askmehelpdesk.com/electrical-lighting/wiring-3-prong-plug-4-prong-outlet-226475.html
    Most Household circuits can't handle it.
    If your circuits are capable, search for an answer to your wiring question or post a new thread.
    My knowledge doesn't cover your specific question.
    Happy (and SAFE( Holidays!
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