My shop is 30x34x10 with attic trusses and a 7x8' space up there. I am currently running a 1 1/2 hp Grizzly Cyclone which does an excellent job on my machinery. That machinery is a Sawstop, Dewalt 15" planer, 14" BS, 6' jointer, Router table, etc. No industrial stuff. In the 4 yrs the shop has been up I finally just stopped almost all work, except on my potato chip table top, and am doing another re-org. First step was to eliminate all the "stuff" whether hers or mine that doesn't support my shop work. Two weeks ago I found that I couldn't walk 4' without re-directing, turning sideways or doing a do-se-do with something. I got the Adirondack Guide Boat out, the unused exercise equipment and other things and it is opening up. I am tired of rolling the DC around and dealing with hoses and cords on the floor. My biggest mistake in the build was not putting electrical in the slab and overhead. All my 220 power in down fed from the attic so I could run a couple 220 drops along with the 4" DC drops. 6" ridgid pipe in the attic and along the ceiling and 4" flex drops. I am not sure the 1 1/2 hp DC can handle it. Oh, that was another mistake. Some equipment, DC, plasma machines and a few others, buy at least one size up from what you think you need. I am going to talk to Grizzly on this. Has anyone done this? How has it worked out? What am I missing? Much obliged for any suggestions.