I don't intend this to be a rebuke to Doug but not everyone needs a 1000 watt inverter, personally I only run the 35watt TV off mine. I really want to change my 32" TV out for a brand and model that uses a wall brick so I can just wire it through a true 30 amp power point and eliminate the power draw of the inverter.
We usually dry camp on the beach or at "Q" and we can go three or four days on fully charged batteries. When our rig was built it had a home entertainment system and it was preped for satellite that ran off the 300 watt PSW inverter that Winnie installed so while that was 16 years ago, the systems of today don't take any more power than back then, maybe less.
The most important thing is to learn what you need, the ID tag on the electronics should have the input requirements. Write everything down and add them up, then add at least 10 percent to the answer to allow for the future. Then pick out the inverter you need.
