I could not find this in my manual. Does plugging in my MH charge the coach batteries AND the chassis battery or just the coach batteries? And when I'm camping I see a lot of elaborate sewer hoses...
In our setup the shore power charges only the house batteries, but I also use a small charger plugged into the 120 VAC to keep the stater battery charged up.
I have seen only one case where the park required a sewer hose support.