Wouldn't the 220V taps be rated for less current since typically the secondaries are rated for the same current regardless of input voltage? I guess what I'm getting at is that if you have a 12V/1A secondary the primaries would be 120V/.1A and 220V/0.05A, or something like that, right? I might have this all wrong, if so, please feel free to tell me. I feel like an atheist preaching about God right now.