Hi John:
I believe the authors of 60950-22 expected that user-accessible parts would comprise SELV circuits rather than grounded parts. See 2.1.1 and 2.2 in 60950-1. Grounded parts would be subject to 5.1 in 60950-1. Best regards, Rich ----- Original Message ----- From: John Cochran <jcoch...@strongarm.com> Date: Sunday, September 7, 2014 1:42 pm Subject: RE: [PSES] UL 60950-1 clause 2.2.3 > Actually I need to meet the standard for outdoor enclosures, UL > 60950-22, and clause 6.1 refers back to UL 60950-1 clause 2.2.2 and > 2.2.3. The difference is the voltage limits are reduced, due to > contact resistance of the body being reduced when subjected to wet > locations. The clause states the voltage difference under a single > fault must not exceed 30 V ac, without any mention of current. Am > I reading this correctly? > > John Cochran > STRONGARM Designs > 425 Caredean Drive > Horsham, PA 19044 > PHONE: 215-443-3400 X193 > FAX: 215-443-3002 - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <emcp...@radiusnorth.net> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
