I couldn't follow the link Peter gave. I think the official UL Public Notice for the issue is below. The receptacle does not comply with UL's requirements and should not bear the UL mark.
http://www.ul.com/global/eng/pages/newsroom/publicnotices/detail/index.jsp?cpath=/global/eng/pages/newsroom/publicnotices//detail/data/ul-warns-of-potentially-hazardous-receptacle-release-13pn-05_20130430080000.xml Regarding Peter's comments, mixing voltages would be allowed as long as you comply with the requirements. We now see receptacles with USB connectors that have UL. In most cases UL/NRTL's do not have blanket statements limiting designs. If designers figure out how to do it and still comply with the requirements, then they're good to go. Peter's comments are right on regarding the concerns - miss-wiring and separation of circuits. -----Original Message----- From: Peter Tarver [mailto:[email protected]] Sent: Monday, May 06, 2013 11:56 AM To: [email protected] Subject: [PSES] UL warning regarding a wall receptacle UL warning regarding a wall receptacle (socket outlet) http://www.nema.org/News/Pages/UL-Warns-of-Potentially-Hazardous-Receptacl e.aspx I'm not aware if mixing of voltages is allowed in a duplex receptacle (I suspect it is not, since wiring errors become more likely and segregation of wiring and other issues come into play in the device box). The marked manufacturer makes UL Listed outlets. Regards, Peter L. Tarver This email message is for the sole use of the intended recipient(s) and may contain confidential and/or privileged information. If you are not an intended recipient, you may not review, use, copy, disclose or distribute this message. If you received this message in error, please contact the sender by reply email and destroy all copies of the original message. - ---------------------------------------------------------------- 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 <[email protected]> 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://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]> - ---------------------------------------------------------------- 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 <[email protected]> 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://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
