Hi...
EMS (Electrical Management System)
Yes, when my Powertech 8Kw starts up the EMS shows the GEN SET light, this I know. I will need to get out to the coach at some point and take a look at the shed lights. I know they are OFF when on shore power.
I do not think I personally would run all three A/C's off the generator.
But that's me.
I will need to get back to you but maybe someone else will in the mean time.