Hello,
I am running a PowMr 48v 5K Inverter, 2x48v 100ah Rack batteries and 6 x 320w 24v Renogy panels in an off grid cabin. 200a fuse on the battery, battery cutoff switch and 15a Breaker for the PV. Cabin was wired by previous owner. No ground rod was installed to the main lug QO panel...