rnicovic@polyslo.CalPoly.EDU (Ralph Nicovich) (10/03/89)
I know this question has been asked before, but recently the issue came up again. I have users in three separate buildings that are next to each other. Each is no more than 400 (cable) feet from the center one. The users wish to interconnect the buildings with "ethernet". My suggestion was to use a Cabletron twisted pair repeater. I wanted to stay away from a real "yellow" ethernet because I believe there is a very real ground loop safety issue when doing this. I believe it is against the national electric code to do this since Ethernet is suppose to be grounded only in one place, and not at the entrance of each building. Note that the buildings are a machine shop, an ag. engr. building (welding,tractors etc.) and a lecture building. It would help if I could get responses from people that have had experiences with this (good or bad). Also any real live info on the safety issue, that I can forward to the people that really make the decision. Thanks in advance, Ralph Nicovich Cal Poly State University