[AT] Welder shocks
charlie hill
charliehill at embarqmail.com
Thu Jun 22 08:42:59 PDT 2017
Cecil. to me this is a fairly clear. You were a better ground
than the ground cable. Either you didn't have a good earth ground
or your ground cable wasn't making good contact or possibly
the part of the trailer you were welding on didn't have a good ground
with the place that you connected the ground clamp. Electricity is
going to take the best path to ground.
Charlie
-----Original Message-----
From: Cecil Bearden
Sent: Saturday, June 17, 2017 8:24 AM
To: at at lists.antique-tractor.com
Subject: Re: [AT] Welder shocks
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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