What is the purpose of equipment grounding on the first line-to-ground fault? What will happen to the person touching the metal enclosure assuming the single-line-to ground fault happened inside the metal enclosure if there is no equipment grounding? Will he be electrocuted? should touch potential be calculated? or since the fault current does not return back to source, the touch potential is irrelevant for the first line-to-ground fault in ungrounded systems?
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