[AT] Welder shocks

[Dennis Johnson]

Cecil,

Isn't touching g the ground cable when in reverse polarity the same as touching the electrode on straight polarity???

Thanks
Dennis


Sent from my iPad

> On Jun 17, 2017, at 7:31 AM, Cecil Bearden <crbearden at copper.net> wrote:
> 
> I was welding on my new trailer yesterday to install a box for the 
> chains and binders etc.  I have several rebuilt Lincoln Idealarc 250 
> AC/DC welders I bought from a Vo-Tech.  While I know not to hold on to 
> the electrode or holder and touch the ground, this welder was shocking 
> me from the ground side.  It was about 95deg with 80% humidity, I was 
> sitting on the ground, and had leather gloves on.  The trailer was 
> hooked t o the ground cable, and the trailer jacks were down, but on 
> gravel.  This is the first time I have been shocked off one of these 
> Lincolns.  I used to have an old Craftsman AC welder that I had to drive 
> a rod in the ground and tack weld it to the work when welding to prevent 
> shock.    The reason this one hurt so bad this time, I tore my rotator 
> cuff for the 3rd time last week, and I that hand was the contact with 
> the trailer.  It caused such a violent muscle spasm that I couldn't 
> finish up from the pain in my shoulder.   I guess I need to drive in a 
> ground rod and hook a battery jumper to the ground or trailer.    If I 
> hooked a grounded cable to the work side of the welder, would that do 
> the same thing, or should it be at the trailer or work?  I should also 
> supply some additional information.  The welder is connected to the 
> power with a 50 ft 6/3 cable, and I was welding on DC reverse 
> polarity.   I keep this welder on reverse polarity.
> 
> I know some of you guys have had this same problem.  This trailer is my 
> tractor hauler, it has a hydraulic tail and hydraulic jacks and I just 
> mounted a 9500 lb winch on the front, and am trying to get a wireless 
> control that will work.   I need to go pick up a 4010 John Deere with a 
> loader that has been sitting about 5 years and it has both a rear tire 
> flat and a front one.
> 
> Cecil in OKla
> 
> 
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