We size the PV DC breakers for the Max input amperage rating of the MPPT, not the wire size, correct?
With a Max Input Current Draw = 18A per MPPT, would it be better to go 16amp DC breaker or 20amp? Someone posted go close and a bit over, but I just didn't want to risk damaging the AIO. I know you stay under for the volts calculated for temp, but wasn't sure about the current. The panels will be single series wired and rated at no more than Isc = 13.70 A at STC, I couldn't find the Imp for the highest rated panel, but the ELECTRICAL DATA at Nominal Module Operating Temperature (NMOT) was less then the stated 13.70A.
Similarly, how would I size the SPD? 20KA, 40KA?
With a Max Input Current Draw = 18A per MPPT, would it be better to go 16amp DC breaker or 20amp? Someone posted go close and a bit over, but I just didn't want to risk damaging the AIO. I know you stay under for the volts calculated for temp, but wasn't sure about the current. The panels will be single series wired and rated at no more than Isc = 13.70 A at STC, I couldn't find the Imp for the highest rated panel, but the ELECTRICAL DATA at Nominal Module Operating Temperature (NMOT) was less then the stated 13.70A.
Similarly, how would I size the SPD? 20KA, 40KA?
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