[ScottG]

I have a detached garage as well. When we replaced the 60 year old breaker box, we also replaced the drop to the garage, and added a panel in the garage. Ran a drop from a 50 amp breaker in the main panel, with 220 to the garage. Used the same type cable as the drop from the pole to the main panel at the house. I stupidly didn't run it underground when I had the chance, so you might want to do that, if it's possible.