Wow so many replies! I am glad I asked the question. Thanks for all the answer and discussion, I learned a lot.
Yes I have all of my question answered, and then some.
My 16 micro is enphase iq7A, it seems to be supporting UL1741SA. That is enabled by specifying the "
CA Rule21 201902 VV VW FW" profile right? ( forgot where I read about that )
I did get some quotes for powerwall / enpower, and they are.. pricy. I just DIY my own PV system, trying to save on the cost, so I also plan to find battery solution that would allow DIY route.
Right now I am leaning toward outback skybox. The all in one option does give a lot of appeal, and the fact that it allows connecting PV panel directly as a dc inverter is also nice - Maybe when I get to the time of expand PV installation, I can just hook a few more panel onto outback to help charge battery and also supply the house.
So right now my plan goes like this:
Code:
Main panel ===== surge load panel === outback === essential panel === PV
|======== pass through ========|
|== Future EV charger
|== Table saw
I will move several circuit to the essential panel, including most of the interior light, a few kitchen appliance plugs, network / PC / security cameras and fridge / freezer.
The surge load panel should have a interlock so the main-> surge load panel breaker and the passthrough / backfead breaker can't be switched on at the same time. So even if I enable that backfeed, at most I power the surge load panel. ( maybe I should move the soon to be installed heatpump to that surge panel ? decision decision.. )
Basically I gave up on backfeeding to the main panel, and try to move all circuit I need battery backup to the essential panel.
Battery choice likely will be the DIY Li-Fe 48V batteries.
Hopefully the plan looks right now. If anything that still looks out of place, please don't hesitate to point out!