My 2000 watt MSW has been a good size for the uses that you stated. I have 3 group 27 deep cycle batteries, and that is the MINIMUM that I would recommend with that size inverter. If I had the space, I would upgrade to 4 T-105 batteries.
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2008 Itasca 37H
2011 & 2012 Len & Pat's "One lap of America"
27K miles & 41 states in 13 months
Yellowstone Lake 6-1-2012
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