The generator must run to use both A/C units. This is by design as the 30 amp power cord can't handle the higher power use. You must rewire for 50 amp cord if you want both units running together. I don't think the cost is worth the conveinence. I try for shadier areas to minumize needing both units.
"Sometimes I wonder if the world is being run by smart people who are putting us on, or by imbeciles who really mean it." Mark Twain
AIR 22749 WBCCI 2349 NOVA TAC TN-6
1989 345 LE Classic Motorhome