John, EN 60065 standard is applicable. As explained by Donald, the | and O is restricted to all pole switch only. However, it seems to apply to isolating switch. For normal consumer products, it comes with mains plug so power on and off switch is not mandatory requirement according to the standard. On some circuit designs, they still employ a single pole power on and off switch for the convenient to the customer to switch off the unit if the unit is not used for a long period of time. It is debatable what is right marking on such switch. Any advice/comments on such scenario?
Thanks, Scott From: [email protected] [mailto:[email protected]] On Behalf Of John Woodgate Sent: Friday, September 14, 2007 8:11 PM To: [email protected] Subject: Re: I O power switch In message <[email protected]>, dated Fri, 14 Sep 2007, Scott Xe <[email protected]> writes: >I have learnt that a single pole power switch is not allowed to be >marked with | for On function and O for Off function and only double >pole switch can be used such symbol to distinguish the type of switch. >If a single pole power switch is used, what is appropriate marking for >it. Is there any standard to set this rule? There is no such restriction in IEC 60417, but there may be in some product safety standards. Which product safety standard applies to your product? -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk There are benefits from being irrational - just ask the square root of 2. John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - 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 ______________________________________________________________________
