More fun then Saturday morning cartoons, as always electrical or legal questions draw more opinions then any other topic.
Just a GFCI 101 Technical Discussion for the non electricians and engineers out there for future reference:
The GFCI passes the Hot Ungrounded Conductor and the Neutral Grounded Conductor through a Torroidal coil. If allllllllllllll the outgoing hot current is returned via the Neutral (as it should) the electromagnetic induced voltage into the coil is canceled so theres no trip HOWEVER if some of the current is returned via a faulty leakage path (grounding conductor or a short or your body etc) and its around only 5 milliamps that's enough of an induced voltage signal to trip the GFCI. If a heater or other device were connected via a GFCI and there was indeed leakage current (like the equipment grounding conductor was returning some) it will trip and the heater wont work. IE use of a GFCI on a faulty circuit isn't the answer to the problem as it will open the circuit but NOT operate the heater YOU HAVE TO FIX THE PROBLEM then use of a GFCI is a good and safe thing plus NEC required in outdoor locations plus others.
If there a shock ONLY if the equipment grounding conductor is in place, there has to be a fault (heater or cord) or mis wiring or hot and neutral and ground are mixed or crossed somewhere or voltage is induced into the ground by which that conductor is energized at a potential higher then local mother earth so porky pig gets shocked OUCH.
HOWEVER which of those possible causes just cant be determined here over the internet by engineers or electricians or lay persons or Billy Bob SORRY
If you were to go back to the main distribution panel and insure a proper Neutral to earth bond and a ground to neutral bond and all was wired correct and there are no loose neutrals or grounds and no downstream re bond of Neutral and run a new dedicated circuit out and if applicable use the NEC livestock building rules and exceptions to bring the ground back down to earth potential AND THE HEATER AND CORDS ARENT FAULTY I bet that will cure the problem !!!!!!!!!!!!!!!!!!!!!!! I'm NOT in favor of home remedies like ground rods (attached to what and where???) or non NEC temporary band aid fixes that dont cure the actual cause and fault but do so if you please as some will stop the shock (but NOT cure the cause).
Nowwwwwwwwww as to which of the possible causes (heater, cord, mis wiring, loose connections, induced voltage, is the problem) HARD TO SAY BY ANYONE NOT BEING THERE
Yall keep safe now an d Happy New Year
John T too long retired EE and rusty but still believe the above holds true but NO warranty lol consult trained professional electricians or Billy Bobs at your own choice
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