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    the1elvis's Avatar
    the1elvis Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Apr 10, 2008, 07:13 PM
    Electric motor wiring
    This is a 480v 240v motor it is wired 480v there are 9 termial points there are 3 jumpers they run from top to middle my t leds are on botton where do I move the jumpers to make it 240v
    Scleros's Avatar
    Scleros Posts: 2,165, Reputation: 262
    Hardware Expert
    		  
    #2

    Apr 10, 2008, 07:37 PM
    Quote Originally Posted by the1elvis
    this is a 480v 240v motor it is wired 480v there are 9 termial points there are 3 jumpers they run from top to middle my t leds are on botton where do i move the jumpers to make it 240v
    Here is a visual Wiring Diagram reference for common configurations. You might want to confirm the connections with a meter before applying power. For low voltage the motor coils are wired in parallel, for high voltage they are in series.

    Also, Ugly's Electrical Reference is a handy reference for such things.
    stanfortyman's Avatar
    stanfortyman Posts: 5,598, Reputation: 279
    Electrical & Lighting Expert
    		  
    #3

    Apr 11, 2008, 10:16 AM
    Three phase work IS NOT DIY work.

    HIRE A PRO to do this!!
    Washington1's Avatar
    Washington1 Posts: 798, Reputation: 36
    Senior Member
    		  
    #4

    Apr 11, 2008, 02:38 PM
    Nor is single phase in some cases! :)
    eric34's Avatar
    eric34 Posts: 56, Reputation: 1
    Junior Member
    		  
    #5

    Apr 11, 2008, 11:32 PM
    I agree with Wash and Stan. I have seen too much poor DIY work end up cost more in the end not to mention unsafe.
    But on other hand if you are interested in how it works, The windings are wired in series for the 480v and wired in parellel for the 240v. Putting 240v across each winding(Basic Ohms Law)
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