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Im looking at building a 48v system with 12 300 w panels. The problem is I cant run them all in series OR parallel I will have to combine the 2. I know that with batteries you must do things in 1 (12v),2 (24v),4 (48V). Is there any similar rules for the panels like say 3 in series and vs 4 in series? Im thinking of 3 parallel setts 4 panels in series would this work? If not what are the rules on this?