Your 28 amp compressor is close to what you have for a breaker. What size wiring did you run and how far to the compressor from the breaker box?
Attached is a picture of what I put in my garage just a few weeks ago. To be safe, I ran 8 gauge wiring, since I was around 50 feet from the box, by the time I went around the corner of the garage. I got my compressor for less than the price in this add.
http://www.northerntool.com/shop/too...5343_200455343