Last week I bought a Campbell Hausfeld 60 gallon 230V air compressor which is supposed to be hard wired. The compressor came with little to no instructions on how to wire in to existing fuse box. I want to use an existing box I had previously wired in my garage for my 220V Lincoln welder with 20 amp double pole fuse. I asked at Lowes how to wire and their master electrician confirmed that I have all the proper 12/2 wiring, 20 amp double pole fuse block, etc. but now I need to know how to make connections. This seems simple but I must admit Im stumped and dont want to screw anything up. Does black wire go to black connection, white to white and green to green? I hooked it up this way with compressor switch in off position and it came on ???