[AT] Welder shocks

[Stephen Offiler]

Reverse is electrode-positive.

SO


On Sat, Jun 17, 2017 at 10:05 AM, Dennis Johnson <moscowengnr at outlook.com>
wrote:

> 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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