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Thread: What happens if I bridge L1 and L2 on a 120 genset

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  1. #1
    DIY Senior Member chefwong's Avatar
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    Default What happens if I bridge L1 and L2 on a 120 genset

    Dual EU2000i.
    To power a 220 on the transfer switch.
    Power is enough on the genset.

    Will a cheater cord of L5-30P coming off the genset to a L14-30 with L1 and L2 Bridge going back to the transfer switch be OKAY - as long as I'm withing the power capabiities ?

    So the Genset cable from Genset to Transfer Inlet - 5-30P to L14-30 would be
    1 Hot to L1/L2 on the Inlet side.
    Last edited by chefwong; 12-01-2012 at 12:54 PM.

  2. #2
    Jack of all trades DonL's Avatar
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    Quote Originally Posted by chefwong View Post
    Dual EU2000i.
    To power a 220 on the transfer switch.
    Power is enough on the genset.

    Will a cheater cord of L5-20P coming off the genset to a L15-20 with L1 and L2 Bridge going back to the transfer switch be OKAY - as long as I'm withing the power capabiities ?
    The Breaker will Pop ?

    Try it and give us a report.

    I would like to know.
    Theory only works perfect in a vacuum.

    Cyber Security Protection for Windows C:\ > WWW.WinForce.Net

  3. #3
    Licensed Electrical Contractor Speedy Petey's Avatar
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    You can do it, just make sure you disable any 240V loads powered by the transfer switch.

    Also, it is an L14-20 female cap you need, not L15-20.

  4. #4
    Retired Defense Industry Engineer jadnashua's Avatar
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    We may be misunderstanding the terms, but if you have any common neutral circuits, you could easily overload the neutral and potentially burn something up. This could happen if you used x-3 to power two circuits where the neutral is common via a dual-gang breaker. ANd, obviously, it wouldn't work if there were any 240vac circuits.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

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    Jack of all trades DonL's Avatar
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    Doing something like this could produce Smoke.

    Please post your Video.

    Why not get the proper equipment and do it safe and correct ?
    Theory only works perfect in a vacuum.

    Cyber Security Protection for Windows C:\ > WWW.WinForce.Net

  6. #6
    DIY Senior Member chefwong's Avatar
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    I bought 2 eu2000 Gas Sipping Gensets.
    I don't expect to use them except maybe every 2-3 years....
    I do plan to excercise them though.

    I don't need a genset that uses 3-6 gallons a day .
    The defeated the whole purpose for ~my needs~.

    Hence the 2 gas sipping inverters.

    I'm not opposed to a 220 genset IF I need it for the 220 application.

    But for all intents and purposes, I was just checking in to see if bridging the L1/L2 on the plugs so the transfer switch sees the 220 load....would it Work or what issues are there from a safety standpoint if I do it this way.

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