Dear Folks: Generally with wire runs being short from battery to inverter (in this case SMA SI) we prefer the largest conductor possible.
Inverters don't like being choked off by wire loss when big loads or significant charging needs the amps. 2 X 2/0 sounds like a great minimum to me, and yes I am a fanatic. Yet the wire run being short means the cost for wire is not huge. Our battery based inverters tend to run very well. C. Energetically, Christopher LaForge Great Northern Solar 77480 Evergreen Road, Suite #1 Port Wing, WI 54865 715 774 3374
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