I have a 2003 DS 50amp It is currently plugged in to my 30amp server at my house. Im using 2×25ft 50amp cords.At first it's show 111volt turn on the A/c it drops 108 or so. What could be causing this...
If those are true 50 amp extension cords, voltage drop should not be the problem on 30 amp power. Starting with 111 volts and dropping to 108 when you turn on the AC makes me think you have a supply source problem. Especially since it is ok with the generator. Make sure you have 120 vac at the outlet. And make sure the outlet wiring is good and the outlet contacts are not loose, worn, or corroded.