Well very frustrated. So I will vent a bit. We had a travel trailer with 30 amp 120 service, had and still have my Honda EU 3000 IS and it did a great job handling the travel trailer with the transfer...
Sounds like your "electrician" is a wire puller & not an "electrician".He is thinking your rv uses 230volts & doesn't understand thr rv uses (2) 110 circuits. My ELECTRICIAN buddy just rewired a 30a rv plug that a so called electrician wired up and when the owner plugged up his brand new motor home ,fried all the appliances.set it up like a range plug.