OTOH, I think the more general issue is all the other equipment (domestic appliances, etc.) which is not capable of operating on both voltage ranges - that could really be a safety issue in many cases.
John Allen W. London, UK -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Peter Tarver Sent: 06 May 2013 22:04 To: [email protected] Subject: RE: [PSES] UL warning regarding a wall receptacle > From: Pete Perkins > Sent: Monday, May 06, 2013 11:48 > > snip < > > I already have a mixed line voltage > and USB wallplate adaptor that is very handy. What voltages are mixed in your cover plate or are you referring only to line voltage and USB/SELV? Since small device SMPS for USB charging are quite small these days, I must assume the cover plate USB power source has the SMPS built into it. For this scenario, it's readily conceivable that adding this functionality could be safely accomplished. I did a quick search on UL's database and found three companies with "Combination tamper resistant receptacle with USB outlets" in their listings for outlets. In such cases, I suspect the USB portion requires no field wiring and that the USB portion replaces one outlet from a duplex configured device. Is this accurate? Regards, Peter 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 < <mailto:[email protected]> [email protected]> All emc-pstc postings are archived and searchable on the web at: <http://www.ieee-pses.org/emc-pstc.html> 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/> http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: <http://www.ieee-pses.org/> http://www.ieee-pses.org/ Instructions: <http://listserv.ieee.org/request/user-guide.html> http://listserv.ieee.org/request/user-guide.html List rules: <http://www.ieee-pses.org/listrules.html> http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas < <mailto:[email protected]> [email protected]> Mike Cantwell < <mailto:[email protected]> [email protected]> For policy questions, send mail to: Jim Bacher: < <mailto:[email protected]> [email protected]> David Heald: < <mailto:[email protected]> [email protected]> ----- No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.2805 / Virus Database: 3162/6303 - Release Date: 05/06/13 - ---------------------------------------------------------------- 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]>
