How to check inverter output.

a grid tie inverter will not function unless it is connected to the grid.  so if you are merely checking with the unit outside but not connected properly, it should not function, nor show any voltage.

to actually check if it were working, it would have to be properly installed, and then a clamp on ammeter would have to be applied to the black wire, either inside or outside, as long as the circuit is closed.  with a 120w module, you may see anything at 1a or below for ampacity, but any current at 120vac would indicate that it was functioning.

if you were not going to install it by the way, those units still fetch a few people looking to pay top dollar for them.

james
altE staff