The core requirement actually comes from 3.3.2 of IEC/EN 60446 (1999 - Basic and safety principles for man-machine interface, marking and identification - Identification of conductors by colors or numerals), which states the same requirement as referenced in IEC/EN 60204-1.
Nick Momcilovic From: [email protected] [mailto:[email protected]] On Behalf Of Nick Williams Sent: Tuesday, August 01, 2006 7:30 AM To: Asim Tirmizi Cc: [email protected] Subject: Re: - Green/yellow wiring for protective conductors (was Creepage and Clearance) EN 60204-1:1998 clause 14.2.2 states: Identification of the protective conductor The protective conductor shall be readily distinguishable by shape, location, marking or colour. When identification is by colour alone, the bicolour combination GREEN-AND-YELLOW shall be used throughout the length of the conductor. This colour identification is strictly reserved for the protective conductor. For insulated conductors, the bicolour combination GREEN-AND-YELLOW shall be such that on any 15 mm length one of the colours covers at least 30 % and not more than 70 % of the surface of the conductor, the other colour covering the remainder of the surface. Where the protective conductor can be easily identified by its shape, position or construction (e.g. braided conductor), or where the insulated conductor is not readily accessible, colour coding throughout its length is not necessary but the ends or accessible positions shall be clearly identified by the graphical symbol 417-IEC-5019 or by the bicolour combination GREEN-AND-YELLOW. Exactly the same wording is used in clause 13.2.2 of the 2006 edition of the standard. There is no other LVD standard in common use with which I am familiar that contains similar wording. Regards Nick. At 3:34 pm -0700 31/7/06, Asim Tirmizi wrote: >Content-Type: text/html >X-MIME-Autoconverted: from 8bit to >quoted-printable by alphaone.ieee.org id >k6VLrtce009392 > >Greetings > >I did a search on the CE website and came across the following link: > ><http://www.ce-mag.com/archive/02/09/lamothe.html>http://www.ce-mag.com >/archive/02/09/lamothe.html > >The author mentions that the color for protective earthing in Europe >shall be 30% yellow and 30% green. I've looked through EN 60950 and UL >60950 and don't see that distinction. It only says the grounding wire >should be yellow and green. I've even looked through some of our CB >scheme reports, no distinction has been given for what the color >combination of the insulation should be other than yellow and green. > >Can somebody point me to a document or standard which actually says >that some specific country in EU requires a grounding wire to be 30% >green and 30% yellow? > >Regards, >Asim > > - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] 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] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] 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] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________
