KENT

Nice purchase, I bet you'll have some great times with her.

 

120 volt and 50 amp would be the best, especially if you'll be running the air conditioner/s.

 

I don't have an answer for your battery switch question but someone will pipe in here with one before too long.

Put this question on the forum.  The blog is for continuing stories of your travels.  You will get many responses on the forum.  Better information on the forum....

why would you need all of the ac units on at the same time , in your yard , I plug mine in to 20 amp and have not had a problem , fridge on to pre cool and front ac to cool off coach to drive , ac only needs to be on for an hour to cool , fridge over night

 

I set mine up with a 30 amp 120volt receptacle.  I have the option to run the A/C or heater if I have a guest stay in it.  I' don't think you need 240 volt.  I leave it off  but turn the breaker on once a week for a few hours to put a charge on the batteries.  

I have a barn I built to allow for full hookups when I am home.  All my rigs have always needs 50 amp 120 volts and some have gone as far as saying 50 amp 240 will do damage.  I also have added a full time battery charger with maintainers built into them since it helps extend the battery life.  They will ramp up battery voltage on a set schedule to prevent sulfation and run much more economically then the inverter's chargers.  WIth this format I have gotten six and seven years out of my batteries and find these chargers run pennies per month to operate.