I am building an array to power my barn. The first array will be 4 200W panels with an open circuit Voltage of 22.8V per panel. Each Rack will have 4 200W panels in series @91.2V.The feed wire from the first array to the barn is 70' We have a lot of 6AWG wire so was planning to run 6 AWG from first rack to barn. When we expand we were thinking of picking up the main barn feed in the combiner box at the first array.
If we do this and have only +&- feed into structure can we split that feed into two smaller MPPT's once in the barn?
If we do this and have only +&- feed into structure can we split that feed into two smaller MPPT's once in the barn?