Thanks George. I bring this up because I was on a job where this was done and I was concerned that the pipe was not properly bonded. IMO it's not. The guy who did it is one of these guys that can do no wrong no matter what you tell him and I've just given up trying. In my opinion it's a poor bond. I'm very concerned about the installation because the pipe feeds numerous pieces of commerical kitchen equipment (28 current-carrying conductors in all) and I'd hate to to later find out that someone died there because a ground fault did not clear when it should have. And because this job had no permits, there is no paper trail, and therefore no responsibility if a fatality occurs.