Good feedback.
The reason I wanted to add a seperate line to connect the 3rd AC unit to a 30 amp when parked using shorepower, is because I did not want to overload the coach circuits.
Last year I had 2 roof ac's and 1 portable ac running, along with fridge, and other items,(no hairdryer or oven, just normal stuff) and the 50 amp protection box tripped and shut off all power to the RV.
So I think I was drawing to many amps and it shut down.
With the 3rd AC going to the 30 amp connection I remove the amps this unit draws through the coach circuits.
Make sense ?