[CaptainGizmo]

There is an Outback PSX-240-RELAY Auto Transformer, an Outback Hub 4, MATE2M Controller/Display and two VFX2812 Inverter/Chargers.  I don't know if the auto transformer is used to produce 240VAC, generator balancing, inverter balancing or???

Jim,

Yes, the OUTBACK PSX-240 AutoTransformer can be used as a STEP UP or STEP DOWN transformer. And, in our case, it's used to STEP UP the 110v to 240v.

I'll include the schematic of configuration in case you don't have it.