I have a customer telling me the following is possible, but I'm not seeing how it's possible...
This is in the USA.
Customer has a circa 1989 house boat with two 30A shore power inputs. He has a generator that outputs 120V/240V. One shore power input and one leg of the generator go into a single manual transfer switch. The output of the transfer switch feeds an AC load center that powers one half of the boat (the front). The second shore power input and second leg of the generator feed a second manual transfer switch, which feeds a second AC load center that powers the other half of the boat (the rear).
Forget the generator for a moment...
This customer says he has a friend who has two Multis, two shore power connections, and ONE Cerbo GX with his house boat with two 30A shore power inputs, one feeding each MultiPlus.
Questions:
1. Can I feed each Multi with two different 120V 30A inputs that might be in phase or out of phase, and when on shore power have each Multi pass it through to its respective AC load center AND be controlled with a single Cerbo? This doesn't appear to work when I test it in the shop with the Multis configured in single phase / parallel.
2. If I configure them in split-phase (2 phase 120 or 2 phase 180), then I could feed each AC load center from one of the phases, but since I don't know what the phases will be coming from the two independent shore power connections, I don't think this will work either.
I've told the customer we can do what he wants and pass-thru both shore power connections but he's going to need two Cerbo GXs since the inverters will act independently.
Is there a way to do what he wants using just one Cerbo? I maintain he can't (reliably) do this and will need two separate systems. Am I just missing something?
Thank you in advance for your thoughts.