Amund I don't think of a green wire as RF "ground." What are Y caps DOING? They are a return path for RF current that could otherwise get onto the mains and cause interference. How does RF current get onto the power conductors? Unbalanced switching noise? Yes, mostly. Capacitive coupling? Some. Inductive? Some. You can cut noise at the source, as well as at the enclosure. Maybe better - you have a shorter path there to the generator. Anyway, if you need to, put Y caps on the equipment side and reduce stray coupling to the mains side with spacing and shielding. Don't think of safety ground as a return for EMI.
Not to judge; we're often stuck with what we have, but that's my two cents worth. (grin) Cortland ------------------------------------------- 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: Ron Pickard: [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: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
