Flexible Cable Used for PV Battery Interconnection

For PV systems, where used for battery interconnections, flexible cables identified as hard-service use and moisture resistant in Article 400, must be a minimum size of _____ AWG.

a) 1/0
b) 2/0
c) 3/0
d) 4/0

See answer and applicable Code reference

The correct answer is: b) 2/0

The installation requirements for solar photovoltaic (PV) systems are outlined in Art. 690 of the 2011 NEC. As noted in the first sentence of Sec. 690.74, "Fle

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