It is interesting issue. The mains sockets are not required to apply safety classes but in terms of safety classes, it is class 2. Since it requires to have earth connection (I believe not "Must be earthed" and it is functional requirement for the mains sockets, not safety requirement with respective of extension sockets box), the class 2 USB socket within the same box cannot be marked double square symbol. Is there any supporting criteria for it?
Regards, Scott On 28/7/13 5:20 PM, "John Woodgate" <[email protected]> wrote: > In message <ce1af51b.1bc3d%[email protected]>, dated Sun, 28 Jul 2013, > Scott Xe <[email protected]> writes: > >> It appears the extension sockets are of class 2 > > No, they are not. These safety classes do not apply to mains sockets. > But since they MUST be earthed, the double-square symbol is completely > inappropriate. - ---------------------------------------------------------------- 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]>
