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Tool Talk Discussion Board

Re: Ground for a welder


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Posted by John T on February 25, 2013 at 13:55:04 from (71.52.99.130):

In Reply to: Re: Ground for a welder posted by JOB on February 25, 2013 at 08:42:05:

Good post, I will try to explain it for you in simple terms so as to NOT loose you, here goes.

If its an AC Buzz Box Welder its an isolation transformer and if theres no leaks or shorts the ONLY voltage difference is between the leads, stinger and the groung clamp, none with respect to mother earth or the concrete floor or structural building steel from either lead. Thats notwithstanding inductive and capacitance which can create some other potentials but those are low energy. Soooooooooo if one part of a farmers body is in contact with say the stinger or metal its in contact with and another part of the body is in contact with the ground clamp or metal or water or earth etc its in contact with THAT VOLTAGE CAN CAUSE A CURRENT FLOW and it only takes maybe 30 TO 50 milliamps across the ticker to cause it to de fibrillate and YOU DIE. If you put one hand on the stinger and another on the ground clamp theres a voltage difference and current can flow.......Same if youre lying on the wet ground or up againstg a metal farm implement etc that either the stinger or ground are contacting you can get shocked

Got it???????

John T


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