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    AMChinook's Avatar
    AMChinook Posts: 3, Reputation: 1
    New Member
    		  
    #1

    Jul 23, 2010, 10:05 AM
    220v 20 amp plug neutral
    If I use a 20 amp 250V plug in a 125V application, which post is neutral? Is it the vertical (like a normal 125V plug) or the horizontal?
    JoeTime's Avatar
    JoeTime Posts: 4, Reputation: 2
    New Member
    		  
    #2

    Jul 23, 2010, 10:40 AM

    If you are going to use a 250v "plug" incorrectly as a 125v then just make sure your prongs match the receptacle wiring. You really should use the correct parts for the job.
    AMChinook's Avatar
    AMChinook Posts: 3, Reputation: 1
    New Member
    		  
    #3

    Jul 23, 2010, 10:55 AM
    Thanks for your answer. I'm attaching a cord to a sprinkler pump (1.5HP) that is convertible between 125/250V. It's currently set to 250V and I will be using it that way. So for now, there is no "neutral". However, if I chose to change to 125V in the future (by changing a jumper within the pump), there will be a neutral. But you're quite right; in that case, I can wire the receptacle that I use then so the neutral is correct.

    I was just wondering if there was a "standard" for which prong of this plug should be neutral.

    Thanks again.
    stanfortyman's Avatar
    stanfortyman Posts: 5,598, Reputation: 279
    Electrical & Lighting Expert
    		  
    #4

    Jul 23, 2010, 12:27 PM

    NO, there absolutely is NO "standard" because there is NO neutral in a 240v circuit.

    DO NOT do what you are proposing. Either wire it for 240v, or 120v, and use the correct parts for each.

    DO NOT incorrectly wire a 240v receptacle for 120v. Period.
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
    Uber Member
    		  
    #5

    Jul 24, 2010, 04:33 AM
    If you use a 250 volt device for a 120 volt circuit, you will violate the UL listing, and the National Electric Code.
    AMChinook's Avatar
    AMChinook Posts: 3, Reputation: 1
    New Member
    		  
    #6

    Jul 24, 2010, 07:47 AM

    I'm properly admonished. I'll do it the proper way...

    It's good to know this forum has a professional level of input.

    KInd regards
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
    Uber Member
    		  
    #7

    Jul 24, 2010, 10:33 AM
    Professionals? Where? Lasts weaks I cuden spells elektrision, now I ares one.
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