Speakin of Grounds n Grounding:
I was an electrician in the USN for 12 yrs, and then got out and went back to NEB, worked construction and then went industrial, and up there, (not sure if it was in the NEC or a local ordinance) on all new installs you weren't allowed to use the "Mechanical" (conduit/pipe etc)as your ground conductor. you had to run a copper ground wire. Now I live in Tx, and the people down here look at me like I'm nuts, I am currently working in a large manufacturing facility, and from the panels/controllers I have opened up there is not one green ground wire in the entire facility. We have just started automating some of the machines, but we are having problems, mostly IMO due to our out dated pwr distribution system.
whats the consensus on this?