Cannot comment on BS7671 or IEC60364, but all North American building codes (e.g., NEC article 240) have overcurrent protection requirements for panels, cords, fixture wires, OCPDs, etc.
Also, ITE and A/V standards talk about this stuff. As usual, the test equipment community makes basic stuff confusing. At least I am confused... Brian -----Original Message----- From: John Woodgate [mailto:j...@jmwa.demon.co.uk] Sent: Friday, November 01, 2013 9:32 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Concerning EN 61010-1, §9.6 Overcurrent protection In message <435656780.4337510.1383321906804.javamail.r...@sz0110a.emeryville.ca.mail .comcast.net>, dated Fri, 1 Nov 2013, Mike Sherman ----- Original Message ----- <msherma...@comcast.net> writes: >If you think of "non-permanently connected equipment" as cord-and-plug >connected equipment, it is not uncommon for cord-and-plug connected >equipment to rely upon the facility mains overcurrent protection (i.e., >a circuit breaker in a distribution panel). Yes, it is, but the idea of requiring manufacturers of equipment to instruct users to install over-current protection in the building is not sensible. Such an instruction would not be acted on. And indeed, 9.6.3 seems to say that it is prohibited to a supply an over-current protection device as a separate object from the device to be protected. It is not clear how such a prohibition could be justified other than holding that the user might remove it. Is that more likely than the user not acting on the instruction to modify the building installation? There is another discussion going on elsewhere about similar texts in IEC/EN 60950-1 and IEC 62368-1. A general re-think about how to write the provisions in this are is required. -- OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk Nondum ex silvis sumus 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://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> - ---------------------------------------------------------------- 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>
