150 Voc limit using panels with 35v Vmp and 42v Voc means 150/42 = 3 panels in series is the limit?
So to double the array wattage to 1200w and stay inside the 150 Voc you need to double the length and width of the three panels, because you can't use six of those others in series, but that doubles the amps, but you want to stay inside the 45amps limit
Or run another three-panel string in parallel but that doubles the amps, but you want to stay inside the 45amps limit.
I have got myself all confused again. :( They said 600w and 45a was the limit.
