Hi Folks Sorry to be late in replying on this one - and not really trying to disagree - but I think you will find that the 125% rule is a "North American" convention and also followed by countries which use similar installation practice (i.e. that have plugs with quite small blades/pins!).
The same rule does not - to the best of my knowledge - apply in Europe (& certainly not in the UK) and other countries that follow European installation practice where derating is not required as our plugs are more substantially built! Therefore we can use a 13 (UK) or 16A (Europe) cable and 13A or 16A plug on an equipment rated at 13A/16A respectively, e.g: re it applies in respect of the EN60950 standard. Regards John Allen ----- Original Message ----- From: <richwo...@tycoint.com> To: <emc-p...@majordomo.ieee.org> Sent: Thursday, August 15, 2002 11:59 AM Subject: RE: requirements for ITE power cords > > George, the ITE safety standards require that the plug be rated for at least > 125% of the equipment rating. I believe that the US National Electrical Code > has the same requirement. > > Richard Woods > Sensormatic Electronics > Tyco International > > > -----Original Message----- > From: George Stults [mailto:george.stu...@watchguard.com] > Sent: Wednesday, August 14, 2002 6:28 PM > To: 'emc-p...@majordomo.ieee.org' > Subject: requirements for ITE power cords > > > > Hello Group, > > Recently my purchasing department asked me to recommend standards for power > cords. These are detachable power cords for ITE equipment, both 3-wire and > 2-wire. > Typically the cords are marked with one or more of CSA, UL, (Dentori T). > The ones we get are typically rated from 6 to 10 times the required current > for a given product. > > My question is, are there required or recommended power cord design margins > for current, voltage, power, temperature range, insulation, etc. spelled out > in IEC/EN 60950 or UL1950 or MIL-HDBK 217 or elsewhere? > > Thanks in advance > > George Stults > > > ------------------------------------------- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ > > To cancel your subscription, send mail to: > majord...@ieee.org > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Ron Pickard: emc-p...@hypercom.com > Dave Heald: davehe...@attbi.com > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > Jim Bacher: j.bac...@ieee.org > > All emc-pstc postings are archived and searchable on the web at: > http://ieeepstc.mindcruiser.com/ > Click on "browse" and then "emc-pstc mailing list" > > ------------------------------------------- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ > > To cancel your subscription, send mail to: > majord...@ieee.org > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Ron Pickard: emc-p...@hypercom.com > Dave Heald: davehe...@attbi.com > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > Jim Bacher: j.bac...@ieee.org > > All emc-pstc postings are archived and searchable on the web at: > http://ieeepstc.mindcruiser.com/ > Click on "browse" and then "emc-pstc mailing list" ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
