What sized THWN copper conductors are required to supply a 120V/208V, 3 phase panelboard with 20.5 kVA of noncontinuous load and 25kVA of continuous load?

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What sized THWN copper conductors are required to supply a 120V/208V, 3 phase panelboard with 20.5 kVA of noncontinuous load and 25kVA of continuous load?

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