Hello Tania and All Members, Al is well said, but allow me to add one additional fact.
UL also Lists COMPONENTS which an electrician might use in the field; for example closed-loop connectors, quick-disconnet connectors, splicing connectors, fixture wiring, circuit breakers, outlet boxes, etc. These components undergo more rigorous testing than normal components and are always provided with installation instructions limiting the usage; for example a splicing connector may specify the exact crimping tool and the # and size of all the combination of wires to be spliced by that connector. Best Regards At 18:50 10/05/2000 -0700, Grant, Tania (Tania) wrote: > >John, > >The 'UbackwardsR' mark' is but one of many UL marks. This is the UL >Recognition Mark;-- there are also UL Listing Marks, UL Classification >Marks, and perhaps others that I have forgotten. And you are correct that >only UL can issue UL marks. However, UL can do this based on CB Scheme >reports, provided you have also complied with the U.S. National Electrical >Code requirements, which are spelled out as deviation in the UL1950 >standard. You should be looking at the UL1950, 3rd edition, which is also >harmonized with the Canadian Standards Association and its Electrical Code. >(Kill 2 birds with one stone!) > >Generally speaking, the UL Listing Mark is for end-use product, such as >coffee pots, computers, and finished things one can generally buy in the >store that perform a function. UL Recognition Marks are for components >and incomplete assemblies that are to be placed inside end-use products, >where their recognition still has to be evaluated in this final application. >For example, power supplies, such as UPS, electronic load boxes, or desk >type boxes with power cords which are used for test equipment, would be UL >Listed. However, power supplies (transformer/capacitor/choke/etc. >circuitry mounted on a printed circuit card) that are sub-assemblies of >assorted computer products, would be UL Recognized. That means that this >power supply would be further tested in you end-use product to be sure that >you are not overloading it, and that you are using it within its rated >specifications. > >You might find the following web sites helpful. > > http://ulstandardsinfonet.ul.com/ ><http://ulstandardsinfonet.ul.com/> > > http://www.ul.com/ <http://www.ul.com/> > >Tania Grant, [email protected] <mailto:[email protected]> >Lucent Technologies, Intelligent Network Unit >Messaging Solutions Group > > >---------- >From: Jon Keeble [SMTP:[email protected]] >Sent: Wednesday, May 10, 2000 4:05 PM >To: [email protected] >Subject: UL certification and Underwriter Laboratory > > >I work for an Australian company that has always assumed that 'having UL' >means 'having the 'UbackwardsR' mark'. > >The facts as I understand them are >(1) a UL1950 certificate is required >(2) only an NRTL can issue this certificate >(3) The CB scheme was created to allow people in countries like Australia > to achieve accreditation in other countries (including the US) through >their local test house >(4) the mark of any test house qualified to issue a UL1950 certificate is >all that is required > >In our case, there are people in neighboring countries that >(1) participate in the CB scheme >(2) recognize some Australian test houses (none of which can issue UL1950) >(3) are qualified to issue 1950 > >Our marketing department is fearful that not having the 'UbackwardsR' mark >will raise questions in >the mind of prospective customers. > >I'd be very appreciative of some candid feedback. > > > > >----------------------------- >Jon Keeble >Fairlight >Hardware Engineering Manager >02 8977 9931 >[email protected] >_________________________________ > >The bounds of Time, Space or Mechanics should never stand >in the way of a perfectly good idea....... > >------------------------------------------- >This message is from the IEEE EMC Society Product Safety >Technical Committee emc-pstc discussion list. > >To cancel your subscription, send mail to: > [email protected] >with the single line: > unsubscribe emc-pstc > >For help, send mail to the list administrators: > Jim Bacher: [email protected] > Michael Garretson: [email protected] > >For policy questions, send mail to: > Richard Nute: [email protected] > > >------------------------------------------- >This message is from the IEEE EMC Society Product Safety >Technical Committee emc-pstc discussion list. > >To cancel your subscription, send mail to: > [email protected] >with the single line: > unsubscribe emc-pstc > >For help, send mail to the list administrators: > Jim Bacher: [email protected] > Michael Garretson: [email protected] > >For policy questions, send mail to: > Richard Nute: [email protected] > > Peter Merguerian Managing Director Product Testing Division I.T.L. 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