I have a generic off grid 8kw 48v solar inverter that only outputs single phase 240v (L1 / L2 / G). I would like to use it to charge a Tesla, but the US mobile charger (UMC) doesn't like it. At first I was getting a ground loss error, but I was able to get past this by bonding L2 to ground rod. That said, the US UMC is still throwing an adapter fault because it can't properly detect the outlet. It's capping charging at 8a because of this.
I suspect it doesn't like the single phase output and wants 180 degree inverted legs. If I were to run L1 / L2 through an autotransformer, do you think the UMC would work at higher current? I don't care about the neutral / split phase - I just want to be able to pull close to the inverter's max through the autotransformer @ 240v for Tesla charging.
I would run the inverter's AC output directly to the autotransformer, then from autotransformer to load center, and then bond N to G in the load center to appease the UMC's ground check.
Will the Victron 100A model be able to handle close to 8kw @ 240v? If not, then do I have to go the isoloated transformer route?
