250.36(B), in part says...... just about any size conductor will work.
...
The grounded system conductor shall have an ampacity
of not less than the maximum current rating of the grounding
impedance but in no case shall the grounded system
conductor be smaller than 8 AWG copper or 6 AWG aluminum
or copper-clad aluminum.
As was pointed out in post #2, and agreed to by the OP in post #3.250.36(B), in part says...
I wasn't implying you were incorrect... just posting the actual text. Saves other readers from opening their Code references...As was pointed out in post #2, and agreed to by the OP in post #3.
My answer was to the question of sizing other than code minimum.
but then it would also have to be good for the system fault current or would it?
The NEC does not contain any information on designing an HRG. Their only issue is the mechanical strength of the grounding electrode conductor.How do you size the ground conductor and resistor for a "High Resistance Ground" system on a 3 phase 13.8KV/480V-Wye transformer? ...