Ahhhh ok, I have had it wrong in my head the whole time. I always thought the moment 230V went into the earth cable due to a fault it made the Earth cable now at 230V to earth but because it is earhered to soil it just brings it all to 0V to the soil.

Apologies I have had it wrong in my head the whole time.

Reason is I see in the UK when the do like EV charges they don't continue the PME earth from the DB and use a rod for if there was a fault and such like a neutral being broken etc. Same as if they do a outbuilding which is metal and earhted to solid earth they then TT the earth of that out building and some use the supply earth so if there was an Earth fault in the main house it won't bring the metal work to a higher portion to try earth.



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