Eliminating the neutral: Three-phase string inverters don't require a neutral conductor for operation as they output balanced three-phase power. . I have solar hybrid inverter at home that's connected to the mains using both, the line and neutral wires. This works. . I have an EPEVER UP5000-HM8042 inverter. (also a separate common Earth Connection). To a Developer or Owner: A neutral. . It's possible there is no "neutral", in the sense of where 0 volts, relative to the two outputs, would be but without the inverter make and model that's just guessing. Obviouly with a delta connected. . Does your inverter have a common neutral and does your transfer switch switch the neutral? The answer to the latter is probably no, so it comes down to whether or not neutral input on your inverter is the same as neutral output.
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