Hi, OK, I wasn't going to say anything, but.
1. A UL Listed product complies with all of the applicable requirements. Usually from a standard. 2. A UL Recognized Component does not comply with all of the applicable requirements. That is why they have Conditions of Acceptability. Whether the product is a complete unit or a component is immaterial to whether it is UL Listed or Recognized Component. If it meets all of the applicable requirements, it is Listed. If not, it is a Recognized Component. Now, sometimes UL cheats on this and calls it Classified. Medical equipment is Classified to UL 2601-1. This is mostly because UL does not require you to meet all of the requirements. They say the FDA (US Government agency) covers them. Ned Devine Entela, Inc. Program Manager III Phone 616 248 9671 Fax 616 574 9752 e-mail ndev...@entela.com -----Original Message----- From: Peter Merguerian [mailto:pmerguer...@itl.co.il] Sent: Thursday, May 11, 2000 9:49 AM To: Grant, Tania (Tania); emc-p...@ieee.org; 'Jon Keeble' Subject: RE: UL certification and Underwriter Laboratory 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, tgr...@lucent.com <mailto:tgr...@lucent.com> >Lucent Technologies, Intelligent Network Unit >Messaging Solutions Group > > >---------- >From: Jon Keeble [SMTP:j.kee...@fairlightesp.com.au] >Sent: Wednesday, May 10, 2000 4:05 PM >To: emc-p...@ieee.org >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 >j.kee...@fairlightesp.com.au >_________________________________ > >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: > majord...@ieee.org >with the single line: > unsubscribe emc-pstc > >For help, send mail to the list administrators: > Jim Bacher: jim_bac...@mail.monarch.com > Michael Garretson: pstc_ad...@garretson.org > >For policy questions, send mail to: > Richard Nute: ri...@ieee.org > > >------------------------------------------- >This message is from the IEEE EMC Society Product Safety >Technical Committee emc-pstc discussion list. > >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: > Jim Bacher: jim_bac...@mail.monarch.com > Michael Garretson: pstc_ad...@garretson.org > >For policy questions, send mail to: > Richard Nute: ri...@ieee.org > > Peter Merguerian Managing Director Product Testing Division I.T.L. (Product Testing) Ltd. Hacharoshet 26, POB 211 Or Yehuda 60251, Israel Tel: 972-3-5339022 Fax: 972-3-5339019 e-mail: pmerguer...@itl.co.il website: http://www.itl.co.il ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson: pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson: pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org