What's a "ring circuit" ?
Ralph McDiarmid Product Compliance Engineering Solar Business Schneider Electric From: Richard Nute [mailto:[email protected]] Sent: Saturday, December 03, 2016 12:01 PM To: [email protected] Subject: Re: [PSES] British question, about a BS1363 plug-in power supply I understood the fuse in the U.K. plug was to protect the power cordage. In the U.K., outlets are supplied by a ring circuit rather than a branch circuit, therefore the power cord could exceed its ampacity (a U.S.A. term). So, if no power cord, no need for a fuse in the plug. I wonder if the power supply has a fuse to protect the power supply. If so, would this count as the plug fuse? Rich From: John Woodgate [mailto:[email protected]] Sent: Saturday, December 03, 2016 5:01 AM To: mailto:[email protected] Subject: [PSES] British question, about a BS1363 plug-in power supply I received a 5 W SMPS plug-in power supply as part of a multi-unit product. It has interchangeable pins for EU, US, Australian and UK sockets, but it has no fuse. I think this is illegal and intend to notify Trading Standards, as the overall product is marketed by a prominent European company and is widely offered on the Internet. Is there any exemption at all for the requirement that a BS 1363 plug in any form must have a fuse? - ---------------------------------------------------------------- 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]> 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 List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <mailto:[email protected]> Mike Cantwell <mailto:[email protected]> For policy questions, send mail to: Jim Bacher <mailto:[email protected]> David Heald <mailto:[email protected]> ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. ______________________________________________________________________ - ---------------------------------------------------------------- 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]> 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 List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <mailto:[email protected]> Mike Cantwell <mailto:[email protected]> For policy questions, send mail to: Jim Bacher <mailto:[email protected]> David Heald <mailto:[email protected]> ________________________________ This message was scanned by Exchange Online Protection Services. ________________________________ - ---------------------------------------------------------------- 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://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 <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
