I fought with DTE over this when I wanted power to my barn. They kept wanting me to piggyback the mains on my 200 amp main panel in the house. Not what I had in mind. Long story short, I finally asked for an application for new service. I went around work reading the data tags for the 3 Hp Bridgeport, the nice Hardinge lathe, the small Haas turning center, Lincoln TIG, 8 Hp 2-stage compressor, 2 post hoist, etc. If I ever though "that would be cool to have", I put it on the list. I put all that "fantasy island" stuff on the app, and turned it back in. After they came off the ceiling, they told me I was not zoned commercial. Itold them I am "an automotive hobbyist" and that all that stuff was for my hobby of building, re-building, and modifying MY car. Key to the whole deal = MY car. Not friends cars, not cars you fix up and sell. MY car. They will charge you for commercial service, but it's worth it.