Equipotential grounding versus parallel grounding

If you are an electrician working with high voltage equipment (anything rated more than 750 volts) then you should really understand the concept of equipotential grounding and how it differs from parallel grounding. I'll be using 3-phase high lines with a neutral as an example because it's easier to visualize, but once you've got the concept the same theory can be applied when working with high voltage metal-enclosed switchgear as well.

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