I am new to this community and I did read the manual for the Multiplus II 120. It shows a three inverter / 3-phase configuration with shared neutral on page 33.
It might be obvious but can it be configured as a 2 inverter / 2 phase configuration with shared neutral? This would require a 120deg phase offset between the two inverters.
P.S. I would use the split phase unit but I like to have 48V batteries.
Thanks for your patience with a nooby...