In message <e6acec5be8405b4e936c9e9bccac10241b6...@bb-corp-be1.corp.cubic.cub>, dated Thu, 10 Aug 2006, "Price, Ed" <[email protected]> writes
>My question is, why does this appliance have a polarized blade power >connector? Oriental designer not sufficiently familiar with honorable US Code. >I am assuming that the input power pins go directly to the primary of a >transformer, so why should we worry about which side is "high" or >"return"? We need not. >Could wallwarts be designed using identical power blades, allowing the >option of a 180-degree rotation installation? Many are, I believe. Not UK ones, of course (all 3-pin, even if the earth 'pin' is plastic, to work the shutter). All Continental European ones probably are, because few countries use non-reversible plugs. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk 2006 is YMMVI- Your mileage may vary immensely. 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 email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________
