It is recommended to adopt series first, then parallel. Match PV voltage within 60–150VDC (MPPT range) by series connection, then connect multiple series branches in parallel. Do not exceed the max PV input current 120A.
Recommended Cable Sizing (PV DC Side)
For Series Strings (≤15A/string): Use 10AWG (6mm²) PV wire (DC 1000V, 30A rating).
For Parallel Main Lines (Total ≤120A):
≤50A: 8AWG (10mm²)
50–80A: 6AWG (16mm²)
80–120A: 4AWG (25mm²)
By vevor