Hmmmmmm, This question centers around whether two separate ground cables equals double protection.
Safety standards call for single fault testing. For Class I equipment, one of the single fault test conditions is removal of the ground connection. I'm curious how most test labs would reconcile the two statements above. My guess is that they would interpret removal of ground to mean removal of all ground connections. So putting on an extra ground wire wouldn't help. It would just make the safety engineer disconnect another wire to perform the test. Seems to me that there would be no way to talk them in to this one. No matter how many ground wires you put on, or how well you secure them, they could always say, "What if the product is used in a building or environment with an unreliable ground?" or "How can you garantee that the product's ground potential will always be equal to the potential of the floor where the user is standing" I don't have a comeback for that. If anyone does have a comeback; I'd nominate them for the "Safety Compliance Engineer Hall of Fame" ;-) (I'd also want them to be my lawyer.) !!!!!!!!!PLEASE NOTE THE NEW EMAIL ADDRESS!!!!!!!! Chris Maxwell Design Engineer NetTest 6 Rhoads Drive, Building 4 Utica,NY 13502 email: chris.maxw...@nettest.com phone: 315-266-5128 fax: 315-797-8024 ------------------------------------------- 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: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: pstc_ad...@garretson.org Dave Heald davehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on "Virtual Conference Hall,"
