Hi. I'm looking for a 12V inverter with modest (~500W) power output that can be used to power an off-grid cabin with an existing electrical installation. The installation has a distribution board powered by a generator; the earth-neutral bond is made at the board, and connected to a set of earth stakes. I want to replace the generator with a battery-powered inverter (or provide a way to choose between them using a transfer switch).
So I need an inverter that can operate with earth and neutral bonded, and which will not impress AC voltages on the battery side when operating. I understand that many modern, transformerless inverters have no galvanic isolation between the AC and DC sides, so grounding the neutral connection will cause AC voltages to appear on the battery wiring -- if it doesn't actually blow up the inverter.
The 'Phoenix' inverters seem to be suitable for my application, because the documentation states that there is complete isolation between the DC and AC circuits. But I thought I'd better check.