Hello, I have start at new company this past week. We have ethernet products that are required to comply with the isolation requirements of IEEE802.3. We provide isolation of 2250vdc (1500vac) between the ethernet line and the secondary circuit and between the ethernet line and ground circuit.
Does anyone know why these lines are not required to be grounded? If both sides of a line are connected to IEEE802.3 compliant products, I think that if there is a fault between the building power wire and a ethernet wire, the fault voltage will just float on the ethernet wire since there is not path to ground. If there are other cables attached to the device, these cables will also float the power voltage and be subject to contact if not connected on other end. Do anyone know the background on this requirement or have any thoughts on if this is correct thinking? Thank you for your help, Jake __________________________________________________ Do You Yahoo!? Find a job, post your resume. http://careers.yahoo.com ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: [email protected] Dave Heald [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server.
