Series Strings of different panels
I have an off-grid solar power system that is 24V. The panels do not say they are 24V panels, but list a voltage much lower, around 17.7V. There are 2 panels in series, one is an 80W, the other is 140W. There are 2 strings of these going into a combiner box. The 80W panel shows an Ioc of 4.82A, the 140W panel shows an Ioc of 8.68A. I have just been reading that this is a no-no. Should I re-string the two 80W panels in series and the two 140W panels into a separate series string into the combiner box?
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