Gentlemen, I have a question about a bonding scenario I saw today. Working in a new hospital, I walked by a row of sub panels, and the bonding caught my eye. The first panel in the row was feeding the next, and had a 2" ridgid nipple between them. On the end of each side was a bonding bushing with the wire just going through the nipple and bonding on each side. It was a punched hole, but I thought the wire should extend to the grounding bus.
In the electrical room, I looked at the panels in there and I saw a few panels with the same set up, but instead of the wire just going from bushing to bushing, they had on side bonded to the panel, and nothing on the other side.
I can't find anything in the book that says this is wrong, but it just looked wrong. Maybe its just another way of doing it. Any ideas? Gary