I am curious, does the EP800 have the same capability as the AC300 & AC500 of connecting an AC in to supply as a passthrough if the batteries are low SOC and there is no PV input. From the instructions, I see that you can “hardwire” an AC input but that setup is usually to connect to a subpanel/panel. With the AC300/500 you have an AC input that plugs directly into a standard AC outlet in the home and you can control the max Amps that the AC300/500 can use from that outlet; would I be able to hardwire a standard 120 V / 15 amp plug that would work in the same scenario.
Typically I would want to use the system off grid, however, I would like to have the option of supplying extra AC power during periods of low PV input. I would not want to hook up the EP800 directly to the Main Panel (Grid) but would like the capability to add an additional source of AC in (e.g. Home grid AC plug or Generator).
One last observation, it appears that the AC in is 240V (L1,L2,N, and G), can it be wired at 120 V, not using the L2?