For 30amp Trailer, install 30 or 50amp service to pole?

enblethen wrote:
I would need to know what is available. If system where install is going is 120/240 four wire, I would install 50 amp and use the adapter. If system only has 120 volts available then, 30 amp three wire.

Thank you.

I'm not sure. It's a pole we had put in with a large breaker box. My current 30amp outlet for my other trailer is a separate outlet my electrician/car pretender buddy put in.

I would think 120/240 but not 100%