Isn't the safety aspect much more important than anything else? If you have socket outlets into which class 1 products can be plugged, then those socket outlets must have their earth contact connected back to the supply earth. Not to have this fails to achieve the requisite level of safety.
So the extension block has to be earthed, and its markings have to be clear on that point. Putting a class 2 symbol on the block might lead a (admittedly rather foolish) user to fit 2 core replacement mains cable, as that's what the symbol appears to allow. It's not just the safety of the extension block that matters; it's the safety of the assembly that results when the product is used as intended, i.e. by plugging things into it. Is there any downside in declaring the block as class 1, however convoluted an argument one can construct to do otherwise? Who might object to it, certainly from an enforcement point of view? As has already been said, if any part of a construction is Class 1, then that over-rides the fact that other parts of it are Class 2. John C -----Original Message----- From: John Woodgate [mailto:j...@jmwa.demon.co.uk] Sent: 28 July 2013 21:17 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Portable extension sockets In message <6D84212681374CC6A2AFB6A48202374A@Pete97219Compaq>, dated Sun, 28 Jul 2013, Pete Perkins <peperkin...@cs.com> writes: > In spite of John's statement about the reception within England, the >product that you are describing fits within the context of the ITE >standards in my opinion. I understand your point but it won't wash in Britain. Mains socket standards are dealt with by quite different people from TC108 people, and no way will they accept another standard (60950-1 or 62368-1) being applied. In any case the 13 amp system is based on legislation, not just BS 1363. For example, it is illegal to sell a consumer product without a 13 A plug fitted, but there is much more to the legislation than that. -- OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk Why is the stapler always empty just when you want it? John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - ---------------------------------------------------------------- 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://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 <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> - ---------------------------------------------------------------- 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://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 <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>
