I spoke to magnum this am.
Glen the tech guy, said no way to run this inverter whole house with a 50 amp service.
I will need a sub panel.
If the coach was 30 amp, no problem.
The biggest reason for the hybrid is, there is no 50a campgrounds in the whole province of Manitoba.
With the hybrid, I can tell it I have 30a shore, and if it needs more, the batteries will load share the rest.
So my only option is a sub panel.
The sub panel will have both ac, the fridge, and a couple outlets.
Other option is to re wire the coach to 30a.
2016 Sabre 36QBOK
2015 Ram 3500 CUMMINS