Question: What is the minimum size required for a copper grounded conductor of a 3 - phase, 3 - wire, corner - grounded delta system if

What is the minimum size required for a copper grounded conductor of a 3-phase, 3-wire, corner-grounded delta system if the ungrounded phase conductors are sized at 500 kcmil copper?
a.2 AWG
b.3 AWG
c.10AWG
d.500 kcmil
What is the minimum size required for a copper

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