[rames14]

Just be aware, unless you have soft start, you need 50 amps (6000 watts/leg - 12,000 watts total) for you to run as if you are on 50 amp shore power. You won’t have a problem with less, unless two AC’s and the microwave are running. So, a 3500 watt is way undersized. Only you can determine what you “need”. By managing power, many run on 30 amp. You just have to manage your power.