Not to be rude, but read page 1 where I stated exactly that. Will also confirmed with Signature Solar that all of their units are not bonded.
Your comment on first page:
"I'm not saying I know anything about anything, but I just pulled my Growatt SPF5000ES out of the box, and I have NO connectivity between ground and the marked Neutral (L2 for our use), either input or output.
I have a somewhat hard time believing that, if it were true, that nobody would have caught onto it by now, or even found out by accident.
How can you have a dead short between L2 and ground, and these things aren't blowing up all over the place everywhere?"
My question was not whether Ground was bonded to Neutral.
My question is whether Neutral (AC input) is always connected to Neutral (AC output), or if it gets disconnected by a relay.
A single-phase inverter might have Neutral hardwired, and a single pole disconnect isolating Line (AC input) from Line (AC output). That is how my Sunny Island (120V US model) is wired.
I'm sure Sunny Island (220V European model) also has a single-pole relay that only isolates Line, not Neutral. So I don't think it could be used in the US across L1, L2. At least not unless isolation transformers were used in grid side AC input and island side AC output.
So I'm trying to determine if this Growatt has 2-pole isolation or single pole isolation.