I know that electricity doesn’t just dissolve in the ground, it must return to the power source. But once the electricity is in the grounding device, how does it find its way back to the substation if it can be relatively far away?
Edit: I know ground isn’t used in normal working mode and where I live there’s no grounding in sockets.
In: 469
The source is also grounded, in North American residential this would be the centre tap of the supply transformer. High current to ground on ground faults only exists because the source itself is grounded. Those currents flow through the earth back to the source.
If the source were not grounded in any way, a single ground fault would not cause those high currents.
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