LouKrasz wrote:
If I use a step-down transformer that steps 220 volts to 110 volts from a panel with two 15 amp breakers, will I be safe to plug in our RV and use the air conditioner without tripping the breaker continuously or doing damage to the appliances or circuitry in the trailer?
Not sure WHY you are asking the question the way that you are but.....
It appears that you don't have a good grasp on how "50 amp" service really works.
It IS 220 service; two 110 feeds and a neutral. EACH 110 feed is designed for 50 amps, wire size, plugs and main breakers. No transformer is needed.
Like another post said, if you are putting in a new circuit in a building, you NEED to "engineer" it to the same 50 amp spec's as the campgrounds do. Same receptacle, same wire size and a twin 50 breaker.