diy solar

diy solar

single Parallel Array feed to multiple MPPT's?

B.Babs

New Member
Joined
May 6, 2022
Messages
21
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?
 
No.

You can't feed an array into two separate MPPT. They will never find the MPP as they fight each other for the array.

You can split the array wiring-wise and feed each MPPT half the array.
That requires additional trenching. We'll just put multiple pairs in the conduit when we bury it..
 
Back
Top