5,000 watts should be enough to run most everything in your RV but that is also what, 500 amps at 12 volts (rounded) so your batteries will last perhaps 20 mintues at full load, or less (10)
First: that inverter, does it offer power pass through? If so I'd use the built in transfer switch and install a sub panel
You put a fairly large breaker (50 amp would work but Id go 30) in the main panel, Tell the Inverter the main breaker is liek 25 amps (more on this later) if possible. Run heavy wire (30 amp is 10 or 8 ga, 50 is six) to and from the inverter, to a 2nd breaker box, this one you connecte the incoming wire to the bus (not to a "main breaker") transfer loads you want inverter powered (TV, Microwave, GFIC, Bedroom and possibly the fridge if residential) to this sub panel... Air Conditioners and water heater remain on the main panel.
If it is a stand alone.. You may still wish to do this using a 30 amp ATS and putting the inverter on the MAIN or LINE or SHORE, and hooking the line from a 30 amp breaker to the GENERATOR terminals (INtelletec makes good 30 amp transfers) this way
When you pull into a site, the inverter will be powering it's loads
You plug in 2 mintues (rounded) later your Progressive industries HW-50C surge protector applyes 120vac to everyhting.. 30 seconds later the transfer switch kicks over and the inverter is no longer powering anythign.
You lose power and it all falls back to INVERTER
You fire the generator, 30 seconds later the existing transfer switch transfers big ticket items,, The generator re-stablizes during the next 30 seconds and the inverter loads transfer.
I really like that configuration.
