Are you REALLY sure your "home" has a "50A" service drop from the electric company?
That would have to be one heck of a old house/building to have only 50A electrical service entrance..
Pretty much all newer construction homes are required a minimum of "100A" 120/240V service drop in order to get the electric company to hook up to your home..
Not all worlds are the same. The REA here out in the sticks put a 200 amp drop on the power pole where the line terminated. I checked with them about hook up. They said that i was on my own.
So I have a 200 service box in the home and a 100 in the barn.
Just saying, there are exceptions.