thank you. So a little more to think about then. I thought hybrid inverters like the Solark 15k and the EG4 18k would be able to handle the AC coupling.
I went with the Outback, so I don't have specifics on if the two inverters you mention can AC couple. It can be a little more than just hoking the AC in to the generator port. Not sure what those specifics are. outback designed a seperate inverter for this.
The critical loads panel is to ensure the important things get power if there's not enough left in the battery?
The Critical loads panel is
1) What will be powered in case of power outage
2) Can be used for different inverter strategies.
-Where I'm at, the power company lets me use my power I generated for free before I sell to the grid at 1/3rd the rate they charge me.
-Another strategy is to drop the critical loads from the grid so that during peak hours, these loads are ran from the battery. When the battery no longer has enough power, it switches back to the grid. Not sure what happens if the inverter gets overloaded.
There's a bit of thinking that goes in a critical loads panel. I built it for my summer loads where the power consumption is 6 times what it is in the winter. My Critical loads gets nearly full use in the summer with the 4.5 kW 4 ton AC, but in the winter, hardy gets used at all.
Will be contacting EG4. Thanks
This is from the Outback Mojave Manual. I did not go AC Coupled so I did not look at many AC Coupled inverter. If you can do the work yourself with no permitting, than Hybrid may be the way to go, but that would involve disabling the IQ8s.