The question of whether a MultiPlusand Phoenix VE.Direct can be connected to a Venus GX has been discussed and answered. So my question deals with exactly how to connect the AC side. What I would _like_ to have happen is for the Phoenix VE.Direct to power small loads while the MultiPlus24/3000/70 has it's inverter disabled via the Venus. Then when I need a large load, such as a microwave/AC, enable the MultiPlus. To that end:
1) should the two generator AC outputs be connected in parallel, or
2) Should the Phoenix VE Direct 24/500 AC output be connected to the MultiPlus AC1 Input? Would the Phoenix AC then "flow through" the MultiPlus
Background: I have an RV system which is mounted completely external to the RV. I use a 24V 200AH LiFePo4 battery, MultiPlus 24/3000, dual SmartSolar 100/30 and a Venus GX. Shore power comes into the system through a dedicated 30A connector to the MultiPlus AC1 input, then the AC output goes to a hardwired dualphase 50A connector. So I use a 30A cable from shore to the Power Box, then a 50A back into the RV. No holes, no modifications to the RV. If I have 50A available, I'll bypass my power box and just run 50A split phase into the RV directly.
When I'm completely on battery power, I have two use cases for the 110V: A) High power typically running the microwave at 1600W. The MultiPlus and battery handle that without batting an eye. Works fabulously. B) Low power -- maybe 20-50W. Essentially, i'm charging a computer, running a small LCD television, mood lighting on the built-in electric fireplace (no heat -- that's 800W/1100W).
I'm 99% B (low power), 1% A (high power). The problem is that the MultiPlus self consumption and power inefficiencies generating 50W of power mean I'm using 100W-120W 24/7 and I would like to avoid that. At the same time, while I'm an EE and can handle a MacGuyver'ed system, my wife cannot.
Ideally, I'd like to have both inverters on, have the Phoenix on 24/7, generating enough power for the Multiplus to detect it, then have the Multiplus boost when it sees the Phoenix power lagging (i.e overpowered)
Ideas and suggestions are very welcome.