I just got the 200 amp electric line to the new shop. Now for the wiring. The shop has a 20 hp. bed mill and a 20 hp. lathe. Both machines have 100 amp 220 volt three phase mains. The shop will also have an EDM, surface grinder, tubing bender,welders, and etc.
My understanding is that electrical code requires a safety switch disconnect by each machine. I'd like to be able to run both the mill and lathe at the same time. I made a line diagram below of how I'm thinking of wiring all this up.
If anyone can make sense of my ASCII art, is this how you'd do it? Do you see any code violations to watch for?
200 amp line | | | [J box]---------[1 phase 200 amp load center] | | | {lights, plugs,etc.} | [200 amp switch] | | | [phase converter] | | [J box 3 phase] ------[100 amp switch] | | | [J box 3 phase] -----[100 amp switch] | | | | [100 amp switch]----[20 amp switch] | | [30 amp switch] etc.SWITCH is an enclosed safety switch with the indicated fuses J box is a junction box for connecting wires load center is a standard household type circuit breaker panel
----- wires | | wires
An apple a day keeps the doctor away. Two apples a day gets the doctor's OK. Five apples a day makes you a fruit grower, like me.
Karl Townsend in beautiful Dassel,MN