> Can someone perhaps tell the make/model of my inverter? Possibly, if someone went through and fingerprinted all the inverters. If it's a plain simple invert

> Can someone perhaps tell the make/model of my inverter? Possibly, if someone went through and fingerprinted all the inverters. If it's a plain simple inverter with no grid-tie capability (i.e. one that might be installed in a car), then it might not have any distinctive characteristics, particularly under load. Just plain simple 60Hz all the time. Lightly loaded, some inverters have a power-save mode where they alter the waveform to that it produces less wasted power in the MOSFET stage, but I don't know if that would show up as a distinctive sound. If it's a grid-tie-capable inverter, even if you're not using it in that mode, it probably has some distinctive characteristics. These units try to wibble their frequency around a little bit to see if anything "pushes back", as a way of ascertaining whether there's grid power present. They may also shift their frequency as a way of communicating with AC-tied solar panels on microinverters, analogous to how the grid's own frequency varies with load, but not so smooth. All of those behaviors would likely produce pretty distinctive sounds, and they may vary per model, and certainly per manufacturer.