The GP is saying (IIUC) that you should have 2 outlets and opposite phases. But that’s exactly what split-phase looks like in house wiring, right? (Whether that’s how the inverter functions or not).
with 2 outlets he means 4 conductor terminals, and with "opposite phases" he means voltages in quadrature (so that power is in opposite phase, since out of phase voltages means in phase power)?
