A question For you workshop owners
When I built my shop in November, I placed a receptacle 4-5 inches above my bench which occupies one 23' wall (it's 16' long). Those outlets are 3 feet away from eachother. On the opposing walls, I put the outlets at the same heighth, or about waist level. Same 3' spacing (actually it's 32"). With some up by the ceiling. You can never have enough outlets, hence the name 'convenience outlets'. It's a pain to cut the sheetrock out for them all, but you can't ever have enough outlets.
I stress, YOU CAN NEVER HAVE ENOUGH OUTLETS!
While your at it, run some COAX and CAT5 (for computer networking). You don't have to hook them up right now, but who knows what the future will bring? I've got CAT5 in 3 places in my walls.
If you opt for CAT5, remember if you have to cross electrical wire, do it perpindicular, not alongside.