Please excuse my ignorance, but I thought the NEC applied to the building wiring?

If we have a "plain vanilla" industrial rental unit, and I install a Bridgeport vertical mill, does the NEC care whether I use a properly sized and installed cord drop or EMT? Personally, I have been involved with enough remodels and moves to realize that nothing, including the building, is permanently installed.

Seperately, do you have to use the designed "Drop cable" with the multiple bundles of ground wires or could any service cable rated cable (SO, SJO, SOOW, etc.) be used?




[This message has been edited by LarryC (edited 09-25-2006).]