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  1. #1
    Join Date
    Nov 2003
    Posts
    3,029

    Unhappy Cruizer..Backfeeding line power to Bobcat 225G..

    Cruizer..

    here is a problem I saw posted on another site... think the guy did some major damage... what do you think..??

    ""Oops!!. Can Someone help me!!
    I have a Miller 225G welder/generator I have been using the generator lately to heat up a hot water tank which comes from the 220 on the generator to a 240v heating element just exactly like what is in your hot water heater! Being how I don't have a thermostat after about an hour when it is heated up plenty I shut the welder down unplug the cord and plug in another cord hooked to the same heating element into my 120v wall outlet to just maintain temperature!! So here is the oops!! The one time I forgot to unplug the 220v cord from the welder so it was charged from the 120v from the wall!! Now it barely turns over and builds what I would explain it as back pressure al
    almost like the Onan motor itself is turning backwards!!
    Please Help!!!! ""
    .

    *******************************************
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  2. #2
    Join Date
    Oct 2004
    Location
    Edmonton, Alberta
    Posts
    7,589

    Default

    Well you stuck a neutral and ground into a live (hot) line. Think your power windings and half your rotor windings are cooked. Machine is cooked (unless its under warranty and don't tell anybody)...

  3. #3
    Join Date
    Nov 2003
    Posts
    3,029

    Default

    Quote Originally Posted by cruizer View Post
    Well you stuck a neutral and ground into a live (hot) line. Think your power windings and half your rotor windings are cooked. Machine is cooked (unless its under warranty and don't tell anybody)...
    Not me... but I figured he cooked it...
    .

    *******************************************
    The more you know, The better you know, How little you know......

    “The bitterness of poor quality remains long after the sweetness of low price is forgotten”

    Buy the best tools you can afford.. Learn to use them to the best of your ability.. and take care of them...

    My Blue Stuff:
    Dynasty 350DX Tigrunner
    Dynasty 200DX
    Millermatic 350P w/25ft Alumapro & 30A
    Millermatic 200

    TONS of Non-Blue Equip, plus CNC Mill, Lathes & a Plasmacam..

  4. #4
    Join Date
    Oct 2004
    Location
    Edmonton, Alberta
    Posts
    7,589

    Default

    Oh, well you can tell him from me that its cooked...

  5. #5
    Join Date
    Mar 2010
    Posts
    485

    Default

    Classic thread.

    As the old saying goes,

    "A fool and his (welder repair money) are soon parted".

  6. #6
    Join Date
    Feb 2012
    Posts
    224

    Default

    I don't understand how he did that. Did he make up a double male plug cord or dead mans cord.

  7. #7
    Join Date
    Aug 2008
    Location
    Orange, TX
    Posts
    1,181

    Default

    Quote Originally Posted by H80N View Post
    "Now it barely turns over and builds what I would explain it as back pressure almost like the Onan motor itself is turning backwards!!
    Please Help!!!! ""
    I concur with cruiser that he fried the stator. Have seen the same symptoms described with generators that have fried and shorted stators. In fact have an exact example in the shop at the moment awaiting a replacement stator.

    I highly doubt the rotor is bad because it's inducing its magnetic field that is bucking the shorted stator windings hence the reason the engine "barely turns over". Again, seen the same exact symptoms with straight generators.
    MM200 w/spot controller and Spoolmatic 1
    Syncrowave 180 SD
    Bobcat 225G Plus LPG/NG w/14-pin*
    *Homemade Suitcase Wire Feeder
    *HF-251D-1
    *WC-1S & Spoolmatic 1
    PakMaster 100XL
    Marquette "Star Jet" 21-110

  8. #8
    Join Date
    Nov 2003
    Posts
    3,029

    Question

    It struck me as a strange but interesting problem...

    do not know if the poster will ever tell us the resolution...

    he seemed pretty embarassed at his lapse and the subsequent mayhem...
    .

    *******************************************
    The more you know, The better you know, How little you know......

    “The bitterness of poor quality remains long after the sweetness of low price is forgotten”

    Buy the best tools you can afford.. Learn to use them to the best of your ability.. and take care of them...

    My Blue Stuff:
    Dynasty 350DX Tigrunner
    Dynasty 200DX
    Millermatic 350P w/25ft Alumapro & 30A
    Millermatic 200

    TONS of Non-Blue Equip, plus CNC Mill, Lathes & a Plasmacam..

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