A PV system combiner box contains six source circuits, each with an Isc of 8A.

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A PV system combiner box contains six source circuits, each with an Isc of 8A. The output conductor is 6 AWG THWN-2 copper rated at 90°C. What is the maximum allowable OCPD rating per NEC?

50A

60A

70A

80A

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A PV system combiner box contains six source circuits, each with an Isc of 8A.

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