RE: Different shades of UL
Well, just briefly. The backwards UR is a component recognition. It can be used in a end unit only if the conditions of acceptability that are placed in the UL report are met. E. G. Power supplies would have obvious things like the end use product must provide and adequate fire enclosure etc. Less obvious might be the requirement for a specific amount of airflow across the power supply itself - this one can bite the unwary. The UL in a circle indicates a Listed product - those products that are fully ready for a user. Plug it in and go. A computer for example. (Inside of which is probably a recognized power supply - which is now properly housed and cooled) Then there is the ULc which means its a listed product and evaluated to bi-national standards for the US and Canada. (CSA has a similar mark) There are actually other forms of markings as well, the words Underwriters Listed for example could be used instead of the UL in a circle thing. Then there are Classified items such as sheet rock, roofing materials etc. Haven't a clue what that marking looks like. I suppose there are variants that I haven't mentioned but these are the essentials to your question I believe. Gary -Original Message- From: Chris Maxwell [mailto:chris.maxw...@nettest.com] Sent: Friday, February 22, 2002 6:40 AM To: EMC-PSTC Internet Forum Subject: Different shades of UL Hi all, I know that this has been covered before. But please indulge my ignorance. There are many different forms of UL marks, each with subtle differences. There is the UL in a circle. There is also the mirror lettered RU. There are also some subscripts denoting approval for Canada as well. There may be some other variations that I can't remember. Anyone care to blow a few minutes on a Friday afternoon to explain which symbol means what? Thanks, Chris Maxwell | Design Engineer - Optical Division email chris.maxw...@nettest.com | dir +1 315 266 5128 | fax +1 315 797 8024 NetTest | 6 Rhoads Drive, Utica, NY 13502 | USA web www.nettest.com | tel +1 315 797 4449 | --- 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...@mediaone.net 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...@mediaone.net 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
RE: Different shades of UL
A very quick and basic summary: Very roughly speaking, the UL marks can be interpretted as follows. (OK there are pages and pages of jargon attached to each but the quick messy answers are): the UL, UL listed and CUL listed products are those that have been tested at a UL test facility and passed the relevant applicable product tests (safety) for such a device. The CUL denotes listing is acceptable to UL and harmonised Canadian standards. The list info and file will outline the standard applied (maybe UL1950 / UL60950) and models of the equipment covered. Such listed devices are manufactured at UL inspected factory facilities. The mirror image logo is applied to components and parts for which UL have a manufacturing scheme. This means parts marked with the logo have been tested using UL inspected methods and under a UL checked quality system. This could be on a cable such a a VW-1 rated cord or a PCB with V0 Rating etc. Adopting logo marked parts for use in a UL listed product makes for easier tracability of critical components. There is also a UL listed Accessory which is for devices intended to be installed in a host (like a card for a PC). This is like the UL, CUL mark but requires installation instructions as part of the assessment. Hope this helps: Bill Ellingford Approvals and Compliance manager Motion Media Technology -Original Message- From: Chris Maxwell [mailto:chris.maxw...@nettest.com] Sent: 22 February 2002 14:40 To: EMC-PSTC Internet Forum Subject: Different shades of UL Hi all, I know that this has been covered before. But please indulge my ignorance. There are many different forms of UL marks, each with subtle differences. There is the UL in a circle. There is also the mirror lettered RU. There are also some subscripts denoting approval for Canada as well. There may be some other variations that I can't remember. Anyone care to blow a few minutes on a Friday afternoon to explain which symbol means what? Thanks, Chris Maxwell | Design Engineer - Optical Division email chris.maxw...@nettest.com | dir +1 315 266 5128 | fax +1 315 797 8024 NetTest | 6 Rhoads Drive, Utica, NY 13502 | USA web www.nettest.com | tel +1 315 797 4449 | --- 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...@mediaone.net 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...@mediaone.net 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
RE: Different shades of UL
You don't know the half of it. Check out the following: http://www.ul.com/mark/ Best regards, Brian Epstein Sr Regulatory Compliance Engineer Veeco Metrology 112 Robin Hill Rd Santa Barbara CA 93117 805-967-2700 x2315 brian.epst...@veeco.com mailto:brian.epst...@veeco.com -Original Message- From: Chris Maxwell [mailto:chris.maxw...@nettest.com] Sent: Friday, February 22, 2002 6:40 AM To: EMC-PSTC Internet Forum Subject: Different shades of UL Hi all, I know that this has been covered before. But please indulge my ignorance. There are many different forms of UL marks, each with subtle differences. There is the UL in a circle. There is also the mirror lettered RU. There are also some subscripts denoting approval for Canada as well. There may be some other variations that I can't remember. Anyone care to blow a few minutes on a Friday afternoon to explain which symbol means what? Thanks, Chris Maxwell | Design Engineer - Optical Division email chris.maxw...@nettest.com | dir +1 315 266 5128 | fax +1 315 797 8024 NetTest | 6 Rhoads Drive, Utica, NY 13502 | USA web www.nettest.com | tel +1 315 797 4449 | --- 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...@mediaone.net 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...@mediaone.net 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
RE: Different shades of UL
Chris Here is a great link that describes the different UL marks. http://www.ul.com/mark/index.html Kati Wenzel -Original Message- From: Chris Maxwell [mailto:chris.maxw...@nettest.com] Sent: Friday, February 22, 2002 8:40 AM To: EMC-PSTC Internet Forum Subject: Different shades of UL Hi all, I know that this has been covered before. But please indulge my ignorance. There are many different forms of UL marks, each with subtle differences. There is the UL in a circle. There is also the mirror lettered RU. There are also some subscripts denoting approval for Canada as well. There may be some other variations that I can't remember. Anyone care to blow a few minutes on a Friday afternoon to explain which symbol means what? Thanks, Chris Maxwell | Design Engineer - Optical Division email chris.maxw...@nettest.com | dir +1 315 266 5128 | fax +1 315 797 8024 NetTest | 6 Rhoads Drive, Utica, NY 13502 | USA web www.nettest.com | tel +1 315 797 4449 | --- 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...@mediaone.net 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
RE: Different shades of UL
Chris: you probably will get this question answered by many people. go to the following link and you will find all you need http://www.ul.com/mark/index.html Jim Allan Manager, Engineering Services Kentrox LLC 1619 N Harrison Parkway Sunrise, FL, 33323 E-mail james_al...@milgo.com Phone (954) 846-3720 Fax (954) 846-6282 -Original Message- From: Chris Maxwell [SMTP:chris.maxw...@nettest.com] Sent: Friday, February 22, 2002 9:40 AM To: EMC-PSTC Internet Forum Subject: Different shades of UL Hi all, I know that this has been covered before. But please indulge my ignorance. There are many different forms of UL marks, each with subtle differences. There is the UL in a circle. There is also the mirror lettered RU. There are also some subscripts denoting approval for Canada as well. There may be some other variations that I can't remember. Anyone care to blow a few minutes on a Friday afternoon to explain which symbol means what? Thanks, Chris Maxwell | Design Engineer - Optical Division email chris.maxw...@nettest.com | dir +1 315 266 5128 | fax +1 315 797 8024 NetTest | 6 Rhoads Drive, Utica, NY 13502 | USA web www.nettest.com | tel +1 315 797 4449 | --- 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...@mediaone.net 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...@mediaone.net 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
RE: Different shades of UL
UL has a page entitled UL's Marks -- What they look like and what they mean http://www.ul.com/mark/ Richard Woods Sensormatic Electronics Tyco International -Original Message- From: Chris Maxwell [mailto:chris.maxw...@nettest.com] Sent: Friday, February 22, 2002 9:40 AM To: EMC-PSTC Internet Forum Subject: Different shades of UL Hi all, I know that this has been covered before. But please indulge my ignorance. There are many different forms of UL marks, each with subtle differences. There is the UL in a circle. There is also the mirror lettered RU. There are also some subscripts denoting approval for Canada as well. There may be some other variations that I can't remember. Anyone care to blow a few minutes on a Friday afternoon to explain which symbol means what? Thanks, Chris Maxwell | Design Engineer - Optical Division email chris.maxw...@nettest.com | dir +1 315 266 5128 | fax +1 315 797 8024 NetTest | 6 Rhoads Drive, Utica, NY 13502 | USA web www.nettest.com | tel +1 315 797 4449 | --- 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...@mediaone.net 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...@mediaone.net 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
RE: Different shades of UL
Chris, See attached link which might be helpful to you. The information may be found in UL's site http://www.ul.com TGIF! PETER S. MERGUERIAN Technical Director I.T.L. (Product Testing) Ltd. 26 Hacharoshet St., POB 211 Or Yehuda 60251, Israel Tel: + 972-(0)3-5339022 Fax: + 972-(0)3-5339019 Mobile: + 972-(0)54-838175 http://www.itl.co.il http://www.i-spec.com -Original Message- From: Chris Maxwell [mailto:chris.maxw...@nettest.com] Sent: Friday, February 22, 2002 4:40 PM To: EMC-PSTC Internet Forum Subject: Different shades of UL Hi all, I know that this has been covered before. But please indulge my ignorance. There are many different forms of UL marks, each with subtle differences. There is the UL in a circle. There is also the mirror lettered RU. There are also some subscripts denoting approval for Canada as well. There may be some other variations that I can't remember. Anyone care to blow a few minutes on a Friday afternoon to explain which symbol means what? Thanks, Chris Maxwell | Design Engineer - Optical Division email chris.maxw...@nettest.com | dir +1 315 266 5128 | fax +1 315 797 8024 NetTest | 6 Rhoads Drive, Utica, NY 13502 | USA web www.nettest.com | tel +1 315 797 4449 | --- 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...@mediaone.net 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 The UL Mark.htm Description: Binary data
RE: Different shades of UL
Chris, Your best bet is to get it from the source at: http://www.ul.com/mark/ Best regards, Dave Lorusso Director of Product Integrity General Bandwidth, Inc. 12303 Technology Blvd. Austin, TX 78727 512-681-5480 (phone) 512-681-5481 (fax) dave.loru...@genband.com www.genband.com -Original Message- From: Chris Maxwell [mailto:chris.maxw...@nettest.com] Sent: Friday, February 22, 2002 8:40 AM To: EMC-PSTC Internet Forum Subject: Different shades of UL Hi all, I know that this has been covered before. But please indulge my ignorance. There are many different forms of UL marks, each with subtle differences. There is the UL in a circle. There is also the mirror lettered RU. There are also some subscripts denoting approval for Canada as well. There may be some other variations that I can't remember. Anyone care to blow a few minutes on a Friday afternoon to explain which symbol means what? Thanks, Chris Maxwell | Design Engineer - Optical Division email chris.maxw...@nettest.com | dir +1 315 266 5128 | fax +1 315 797 8024 NetTest | 6 Rhoads Drive, Utica, NY 13502 | USA web www.nettest.com | tel +1 315 797 4449 | --- 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...@mediaone.net 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...@mediaone.net 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
RE: Different shades of UL
Chris Try this web address, it explains all the various UL marks and what they mean. http://www.ul.com/mark/index.html Andrew Carson - Senior Compliance Engineer, Xyratex, UK Phone: +44 (0)23 9249 6855 Fax: +44 (0)23 9249 6014 -Original Message- From: Chris Maxwell [mailto:chris.maxw...@nettest.com] Sent: 22 February 2002 14:40 To: EMC-PSTC Internet Forum Subject: Different shades of UL Hi all, I know that this has been covered before. But please indulge my ignorance. There are many different forms of UL marks, each with subtle differences. There is the UL in a circle. There is also the mirror lettered RU. There are also some subscripts denoting approval for Canada as well. There may be some other variations that I can't remember. Anyone care to blow a few minutes on a Friday afternoon to explain which symbol means what? Thanks, Chris Maxwell | Design Engineer - Optical Division email chris.maxw...@nettest.com | dir +1 315 266 5128 | fax +1 315 797 8024 NetTest | 6 Rhoads Drive, Utica, NY 13502 | USA web www.nettest.com | tel +1 315 797 4449 | --- 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...@mediaone.net 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...@mediaone.net 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
Re: Different shades of UL
Chris, Go to the following site and it explains it very well with examples. http://www.ul.com/mark/index.html The information not covered are the : product type (e.g., I.T.E.) (there is a lot of variation allowed here), 4 character Listing Mark Control Number (LMCN) which is a confidential ID for the applicant, UL file number when appropriate, use of the word Accessory or similar when appropriate, The use of the LMCN and UL File Number is determined by who the Applicant and Listee are and who's name is on the power rating label. Also the little detail that the text must be in all Caps and Bold. Oscar M.O.O. Chris Maxwell chris.maxw...@nettest.com@majordomo.ieee.org on 02/22/2002 09:39:52 AM Please respond to Chris Maxwell chris.maxw...@nettest.com Sent by: owner-emc-p...@majordomo.ieee.org To: EMC-PSTC Internet Forum emc-p...@majordomo.ieee.org cc: Subject: Different shades of UL Hi all, I know that this has been covered before. But please indulge my ignorance. There are many different forms of UL marks, each with subtle differences. There is the UL in a circle. There is also the mirror lettered RU. There are also some subscripts denoting approval for Canada as well. There may be some other variations that I can't remember. Anyone care to blow a few minutes on a Friday afternoon to explain which symbol means what? Thanks, Chris Maxwell | Design Engineer - Optical Division email chris.maxw...@nettest.com | dir +1 315 266 5128 | fax +1 315 797 8024 NetTest | 6 Rhoads Drive, Utica, NY 13502 | USA web www.nettest.com | tel +1 315 797 4449 | --- 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...@mediaone.net 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...@mediaone.net 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
Re: Different shades of UL
Chris, The RU is the Recognized mark. It is applicable to products that are incomplete in construction features or limited performance capabilities so as not to warrant their acceptability as a field installed component. This mark does not look like a UL mark because it is not for public or retail use. If this mark is displayed on a retail advertisement or package it is not proper use of the mark. UL in a circle is the Listing Mark. It is authorized on products that comply with the requirements of UL. UL in a Circle with a C at the lower right signifies products that have been tested by UL to the Canadian requirements. Of course UL in a circle with US at the lower left and C at the lower right signifies products that have been tested by UL to the UL requirements and the Canadian requirements. UL in a circle with the word Classified around the top of the circle signifies products that are classified with respect to: a: properties of the product b: A limited spectrum of hazards to life or property c: suitability for certain uses or d: other conditions. Note: there are other, little used, marks with the words Underwriters Laboratories written out that also mean Listed Lee Schmitz Consultant --- 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...@mediaone.net 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
Re: Different shades of UL
Hi Chris, Explain, no. But, you will find the answer to your question at: http://www.ul.com/mark/index.html There, you should be able to find every kind of UL mark, and then some. Each has has a short description. I hope this helps. Best regards, Ron Pickard rpick...@hypercom.com chris.maxwell@NetTest.c om To: emc-p...@majordomo.ieee.org Sent by: cc: owner-emc-pstc@majordomSubject: Different shades of UL o.ieee.org 02/22/02 07:39 AM Please respond to chris.maxwell Hi all, I know that this has been covered before. But please indulge my ignorance. There are many different forms of UL marks, each with subtle differences. There is the UL in a circle. There is also the mirror lettered RU. There are also some subscripts denoting approval for Canada as well. There may be some other variations that I can't remember. Anyone care to blow a few minutes on a Friday afternoon to explain which symbol means what? Thanks, Chris Maxwell | Design Engineer - Optical Division email chris.maxw...@nettest.com | dir +1 315 266 5128 | fax +1 315 797 8024 NetTest | 6 Rhoads Drive, Utica, NY 13502 | USA web www.nettest.com | tel +1 315 797 4449 | --- 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...@mediaone.net 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...@mediaone.net 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
RE: Different shades of UL
try this Chris. It'll explain all. http://www.ul.com/mark/index.html John Juhasz Fiber Options Bohemia, NY -Original Message- From: Chris Maxwell [mailto:chris.maxw...@nettest.com] Sent: Friday, February 22, 2002 9:40 AM To: EMC-PSTC Internet Forum Subject: Different shades of UL Hi all, I know that this has been covered before. But please indulge my ignorance. There are many different forms of UL marks, each with subtle differences. There is the UL in a circle. There is also the mirror lettered RU. There are also some subscripts denoting approval for Canada as well. There may be some other variations that I can't remember. Anyone care to blow a few minutes on a Friday afternoon to explain which symbol means what? Thanks, Chris Maxwell | Design Engineer - Optical Division email chris.maxw...@nettest.com | dir +1 315 266 5128 | fax +1 315 797 8024 NetTest | 6 Rhoads Drive, Utica, NY 13502 | USA web www.nettest.com | tel +1 315 797 4449 | --- 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...@mediaone.net 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...@mediaone.net 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
