Sounds like you fed 240 volts into a 120 volt RV. You screwed up. Expect some appliances to be ruined.
You need an electrician to install the correct receptacle in your garage and then an RV tech to repair the RV wiring and appliances.
lostnconfused wrote:
Ok I bought my first camper, and I know a little bit about electrical....
Apparently very little, you are lucky you didn't kill someone or burn your RV and garage to the ground. This is going to cost you, I suggest you refrain from working with anything electrical.