[RE-wrenches] How to find Ground fault on ungrounded system.

The system is Fronius Primo, trip on fault code meaning ground fault in the array.I disconnect the arrays from the combiner it measures 400+ corresponding to Voc @ temp. My Fluke multimeter the same about 5 volts to ground off both ends of the disconnected array. When I connect the inverter

[RE-wrenches] SOC, FNDC, and LFP batteries

Hello All, Does anybody have any insight in getting the SOC to report accurately on the Outback FNDC when using batteries that have a minimal voltage curve? I have several systems with LFP batteries that have both a eGauge (communicating directly with the battery BMU) and a FNDC and I get wildly d