phemens wrote:
The original plan was 8 gauge wire run from the roof to the MPPT controller, roughly 25 feet, 4% loss at 24v, for the 3 panels in parallel. Am I correct in thinking that for the 2 new 72 cell 335w panels, would be better to wire in series at 48v (@9A)using say 16 gauge wire to the Victron 50A MPPT, and keep the 8 gauge for the single 24v 60 cell 250w panel to the existing 30A Rogue MPPT? If ever I added another panel to pair with the 250w, would run in series as well.
Are not those panels like 38 volts? They sound like residential panels like mine. Two in series I push 70 volts to the controller. I use 8 gauge some 4o plus feet..
