Hi Ianm,
Have you installed your inverter??
I'm currently going through this planning phase. I have my 5kw Sunsynk and Hubble AM2 batteries. My wiring diagram is similar to yours. Just wanted to know if it all worked out well (if you installed).
One question I still have, the Neutral Earth Bond Contactor, I see you have the Earth as going to the DB Earth, did that work fine. Also, is installing the Neutral Earth Bond Contactor a requirement in SA?? I notice @Leshen also always install these.
Some advice on this would be welcome.
Regards