ac500 split phase connection

I have 2 ac500 and 4 b300s. I have 50 amp plug to charge up both of the ac500. On the output side if I am running split phase can I hook up to the 50 amp plug on 1 ac500 to 1 breaker box and the other ac500 to another breaker box. Or do I have to use fusion box or the split phase output cable that goes back into just one 50 amp service.

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@John2
After setting the split-phase mode, you can use a single output port separately. If you don’t need the split-phase output cable, you don’t have to set the split-phase mode.

Kindly be reminded that the difference in load between the two AC500s should not be too large, otherwise, there will be a significant difference in battery levels between the two main units.

Can I charge both the units off one 50 amp service without being in split phase mode.

Sorry for late reply.
If you are trying to charge each AC500 separately, you will need a 50A charging cable.