I am looking at using an AutoTransformer on the AC Out of my split-phase inverter setup for load balancing 120v loads across the 240v supply... I am having difficulty finding information on where specifically the ground-relay connector on the AT connects to on the MultiPlus. I am not finding this information either on the AT Install manual, or the MultiPlus install manual.
As shown in this attachment at the bottom half of the page under "Wiring diagram: MTR-32", you can see the L-in, N-in, and Ground-in wire connected to the Power Input, in between that and the AC Out however, is an additional 2 wire relay connection with + and - wires... This part I can find no information where this connects to on the MultiPlus. Can anyone provide any information?