Do you mean like this:
View attachment 79263
It seems to me that this would only work if the inverter has a common neutral. I know that some inverters (Like Schnider and Solark) have common neutral and I am pretty sure the Growatts do
not.
BTW: IMHO, inverters should all either dynamically generate the NG-Bond as appropriate or have a common Neutral... but alas, that is not the case.
Essentially, yes (Although the output neutral should continue and connect to the Critical Loads Box Neutral bar)
Isn't what you've drawn giving the inverter that common Neutral?
I completely agree with your call that a dynamically created NG bond is better (and it's what I do in manual transfer switch jobs that I install) but this inverter doesn't have that capability, and bringing in a whole heap of extra relays and contacts (or, points of failure) doesn't seem worth it, when you can just bond the neutrals and use the one NG bond at the main switchboard.
Yer?
Also, in Australia, you can't use contactors to create that NG bond, and be compliant with code (in on-grid installs). Rightfulyl so, because of the multiple points of failure for something so critical to the safety of the installation. So again, this is a better way to handle that.
In my attached pic (remember I'm from Australia) Red (and Blue) is Active, Black is Neutral.
edit: To comment on your "common Neutral" part. If we were to do this, wouldn't it create a parallel path between the neutrals? Which could overload one of them, in certain run conditions?
I feel like you only want to do this, if the neutrals are NOT bonded at the inverter.