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Ground lead arcs when I connect, and auto idle kicks up

Whenever I connect the ground lead it arcs and the engine speeds up like I'm welding, but I can't weld. Its like both leads are hot.

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  • kkbolejack Feb 07, 2009

    machine is mounted to a truck and welding is being done on the workbench on the back. ground lead is attached to the metal I'm welding. Problem just started after 600 hours of welding with this setup.

  • Anonymous Mar 21, 2014

    When you touch wire to metal it arcs everytime without pulling trigger, but no wire feeds

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  • 11 Answers

Hi
what are you connecting the ground lead to?

Is the welding machine phisicaly in contact to what you are welding ?

Can you electrically insulate the welding machine from everything, say stand it on a sheet of timber?

Regards
Rob

Posted on Feb 07, 2009

  • Robert Lee Feb 08, 2009

    Hi

    try welding off the truck, so run some welding cables so that everything is isolated from the truck.

    does the welder opperate normally now?

    if it does then someware there is a short between the "hot" terminal of your welder and the chassis of the truck,

    so when you connect the ground cable to the bench( which is the chassis of the truck) the welder "thinks" its welding.



    does the welder have an aux supply for power tools?

    if there is anything pluged into this is it faulty take it out



    do you have a test meter (Volts, Amps, Ohms)?

    this would help in tracing the fault.



    are the welding cables in good condition, no bare copper showing along their length?



    try al this then come back to me



    regards

    rob



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