Stan:
Mine will run both on 30 amps, but often is not happy. Also not a good idea to under-power AC units.
CW also has a 20 amp + 30 amp jumper that will emulate 50 amps if they are out of phase and the 20 amp outlet is not a GFI (kinda unusual at campgrounds, I find). At home, you can just run a 20 amp line (out of phase) next to your existing 30 amp. Or, re-wire to a 50 amp, like I ended up doing.
Remember, your charger is what really pulls some amps. Turn it off if you're trying to save draw.
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2003 Alpine 40FDTS (400HP)
Long Beach, CA
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