Does anyone have any experience wiring gantry cranes? I have a crane to wire but don't agree with the installers method of connecting the load conductors to the buss bars feeding the rolling hoist. He wants to leave my 8x8x4 junction box, mounted at the top of one of the columns, with 4 individual #8 THHN conductors and connect them to the ends of the 4 buss bars.
Art 610.11B does seem to allow individual conductors for short lengths, but common sense says 480v wiring of this sort should be enclosed. Is this commonly done? I told the plant manager that after the crane guy hooked it up and tested it, I was going to lock it off until I modified it to what I felt was a safe installation. This hoist is above a injection molding machine and these conductors could easily be reached by mold changers working on the press. Thankfully, I have the blessings of the plant manager, but I am just trying to insure I am not crying wolf. Any insight would be appreciated
Thanks,
Dave
