Free2RV, I have the 50 amp service on my 3100 with 2 AC units, I can run the front or back on a 30 amp cord hooked to the 30 amp plug, with 30 amp you have to watch what you turn on, as a rule if I'm using the Microwave, I shut down AC, if the wife uses her hair iron, shut down AC. we run the back AC most the time because it is a lot more quiet. I carry a 50 amp cord and a 30 amp cord, works better that way, had an adapter burn up on me one time.