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1、Subject 20 1285 Walt Whitman Road Melville NY 11 747 December 22, 2003 TO: SUBJECT: Standards Technical Panel (STP) for General-Use Snap Switches, STP 20 Subscribers to ULs Standards Service for Other Interested Parties General-Use Snap Switches, UL 20 Request for Comments on Proposed Requirements f
2、or the Twelfth Edition of the Standard for General-Use Snap Switches, UL 20; PROPOSED EFFECTIVE DATE INSTRUCTIONS STP Members: If you are a voting member of the STP, complete the attached ballot with your vote on the standard or proposals. Please note that all negative ballots must be accompanied by
3、 supporting written reasons and, where possible, proposals for a solution to the problem raised. Impact statements and effective date information are not subject to letter ballot. Therefore, comments regarding impact statements and effective dates may be made and should be sent to the STP Secretary
4、separate from the letter ballot. Subscribers and other interested parties: If you are a subscriber or other interested party, you are requested to send comments on the proposed requirement, impact statement, and proposed effective date to the STP Secretary. The STP member ballot should not be used t
5、o submit your comments. Comments should be made in writing and may be sent by fax to (631) 439-6021 or by mail to the attention of Mr. Steven Dinowitz at ULs Melville office. Comments may also be sent via E-mail to Steven.L.D. Please reference all correspondence to Subject 1082. Note all comments re
6、ceived are public and may be circulated to others. If you respond by fax or E-mail, please include your full name and company name and address to ensure a reply. Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=Army Northwestern Div./7838506130 Not for Resale, 0
7、8/29/2006 08:33:40 MDTNo reproduction or networking permitted without license from IHS -,-,- SUBJECT 20 -2- DECEMBER 22,2003 SUMMARY OF TOPICS This bulletin proposes the following changes in requirements: I) Single Pole Switches 2) General-Use AC/DC Switches 3) Key-Operated Switches 4) “aturar Grey
8、STP BALLOTS AND ALL COMMENTS DUE: FEBRUARY 22,2004 Attached as Appendix A for your review and comment are proposed requirements for UL 20. Attached as Appendix B for your review and comment are the impact statement and proposed effective date. Attached as Appendix C, D, and E are the STP membership
9、roster, STP ballot instructions and the STP ballot, respectively. Questions regarding interpretation of requirements should be directed to the responsible UL Staff. Please see Appendix F of this bulletin regarding designated responsibility for the subject product category. Please note that proposed
10、requirements are of a tentative and early nature and are for review and comment only. Current requirements are to be used to judge a product until these requirements are published in final form. PRODUCTSANDINDUSTRIESAFFECTED BYTHE PROPOSAL UL requests your assistance in identifying other products or
11、 industries that might be affected by the requirements contained in this bulletin. UL suggests that all suppliers or customers for these products and industries be made aware of these requirements prior to their proposed effective date. Also, please forward your suggestions to UL so that these produ
12、cts and industries may be identified in future bu I let ins. Unless specifically requested to do so, UL will not acknowledge comments indicating concurrence with these proposals. UNDERWRITERS LABORATORIES INC. REVIEWED BY: STEVEN L. DINOWITZ (Ext. 22468) Secretary for STP 1026 Standards Department U
13、nderwriters Laboratories Inc. 1285 Walt Whitman Road Melville, NY 11 747-3081 Phone: (631) 271-6200 Fax: (631) 439-6021 E-mail: Steven.L.D http:/ JOHN THOMPSON (Ext. 11621) Chair for STP 20 Corporate Standards Underwriters Laboratories Inc. 12 Laboratory Drive Research Triangle Park, NC 27709-3995 P
14、hone: (919) 549-1400 Fax: (919) 547-6251 E-mail : Jo hn .Thom psonus . u I .com Copyright O 2003 Underwriters Laboratories Inc. Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=Army Northwestern Div./7838506130 Not for Resale, 08/29/2006 08:33:40 MDTNo reproduct
15、ion or networking permitted without license from IHS -,-,- SUBJECT 20 SR: CA bl-20.1220030519;SLD;Sd -3- DECEMBER 22,2003 Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=Army Northwestern Div./7838506130 Not for Resale, 08/29/2006 08:33:40 MDTNo reproduction or
16、 networking permitted without license from IHS -,-,- SUBJECT 20 -Al- DECEMBER 22,2003 APPENDIX A PROPOSED REQUIREMENTS FOR THE TWELFTH EDITION OF THE STANDARD FOR GENERAL- USE SNAP SWITCHES, UL 20 For your convenience in review, proposed additions to existing requirements are shown underlined and pr
17、oposed deletions are shown tmd-e The following topics were discussed at the meeting: SUMMARY OF TOPICS STP Items 1. Insulation Material Requirements with Respect to Harmonization (UL 498) 2. Revision Cycles (UL 20 and UL 498) 3. The Possibility of Combining STP 20 and STP 498 4. The Status of Wiring
18、 Device Products Covered by the Standard for Exhibition Display Units, Fabrication and Installation, UL 2305 5. Updating UL 20 Horsepower Ratings 6. The Inclusion of UL 498 Plug and Cord Connector Requirements in the CANENA Draft Standard for Cord Sets and Power-Supply Cords 7. Collaboration Standar
19、ds Development System (CSDS) Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=Army Northwestern Div./7838506130 Not for Resale, 08/29/2006 08:33:40 MDTNo reproduction or networking permitted without license from IHS -,-,- SUBJECT 498 -2- AUGUST 6,2003 8. UL 20 S
20、ingle-Pole Switch Proposal IAC Items 9. Listing of Products that Do Not Conform to Published Standards IO. ULs Reorganization and its Affect on the Wiring Device Industry II. Guide Information Pages for Plastics COMMENTS DUE: September 3,2003 A joint meeting of the IACs and STPs of UL for Attachment
21、 Plugs and Receptacles and for Snap Switches was held on July 9, 2003 at the Marriott Spring Hill Suites, Montreal, Canada. The purpose of the meeting was to discuss various topics relating to UL 498 and UL 20. Attached as Appendix A and Appendix B are the STP membership rosters for STP 498 and STP
22、20, respectively. Attached as Appendix C is a list of those who attended the meeting. Questions regarding interpretation of requirements should be directed to the responsible UL Staff. Please see Appendix D of this bulletin regarding designated responsibility for the subject product categories. * *
23、* * * * The following report is not intended to be a verbatim transcript of the discussion at the meeting, but is intended to record the significant features of those discussions. ANNOUNCEMENTS The STP Secretary noted that with the implementation of ULs PDE initiative, Chuck Kurten will be replacing
24、 Jon Schuette and Tom Odermatt as ULs Technical Representative on the 498 and 20 STPs, respective I y. STP ITEMS 1. Insulation Material Requirements with Respect to Harmonization (UL 498) DISCUSSION In order to prepare for potential harmonization, Industry requested a discussion of the differences i
25、n insulation material requirements between the Standard for Attachment Plugs and Receptacles, UL 498, General Use Receptacles, Attachment Plugs and Similar Wiring Devices, CSA C22.2 No. 42, and Plugs and Socket-Outlets for Household and Similar Purposes - Part 1 : General Requirements, IEC 60884-1.
26、UL first inquired of STP members whether there is a need for regional harmonization. STP members indicated that there is little benefit in harmonizing with CSA C22.2 No. 42 at this time and that it would be more beneficial to pursue harmonization with IEC 60884-1. The CSA representative indicated th
27、at CSA would most likely choose to also be involved in the IEC harmonization. An STP member noted that if UL could begin to adopt IEC requirements into UL 498, it would facilitate future harmonization efforts. It was further noted that there are some tests that have already been identified as being
28、equivalent to existing UL 498 tests and that could perhaps be incorporated now. Along the same lines, it was noted that efforts are currently underway to bring North American requirements to the IEC for possible adoption into the IEC standards. Copyright Underwriters Laboratories Inc. Provided by IH
29、S under license with ULLicensee=Army Northwestern Div./7838506130 Not for Resale, 08/29/2006 08:33:40 MDTNo reproduction or networking permitted without license from IHS -,-,- SUBJECT 498 -3- AUGUST 6,2003 The long term goal is to identify deviations based on infrastructure and persuade the IEC to p
30、rovide alternative requirements. It was noted that the US TAG 23B (Plugs, Socket-Outlets and Switches) and 23C (World-Wide Plug and Socket-Outlet Systems) will be meeting in Melville, NY on July 23, 2003. There was also discussion regarding the ongoing North American initiative with plastics and fla
31、mmability requirements. Industry would like to persuade the IEC to provide an option for the pre-selection of material requirements instead of end-product testing. If this is successful, we will have a better road map for the harmonization plan. 2. Revision Cycles (UL 20 and UL 498) DISCUSSION STP m
32、embers requested an update on ULs initiative to improve the efficiency of ULs Standards Operations by the implementation of revision cycles for standards maintenance. UL noted that it surveyed members of the most active STPs and after review of the survey results, decided that revision cycles should
33、 not be mandatory and should instead be provided as an available option for standards maintenance upon request from STP members. UL requested input from the UL 20 and UL 498 STP members on the appropriate course of action for these standards. STP members inquired about the possibility of having to r
34、evise a standard outside of the revision cycle to address a safety concern. UL noted that it would maintain the ability to process an urgent proposal before the scheduled revision of a standard. In addition, if significantly critical, UL may even elect to process the proposal as a Provisional ANSI r
35、equirement, requiring simpler review steps than typical revisions. There was brief discussion regarding the possibility of aligning the revision cycle with that of the National Electrical Code, ANSVNPFA-70, but it was decided that this would not be easily accomplished. The consensus of the STP membe
36、rs present was that the activity of these standards is relatively low and that we should not implement revision cycles at this time for either UL 498 or UL 20. Instead, UL should continue to log proposals when received and try to incorporate several proposals at once into a bulletin. 3. The Possibil
37、ity of Combining STP 20 and STP 498 DISCUSSION STP members raised the issue of combining ULs STP for Snap Switches, STP 20, with ULs STP for Attachment Plugs and Receptacles, STP 498. UL discussed this possibility with those STP members present. It was noted that all of the 20 STP members were also
38、members of the 498 STP but that there were several additional members on the 498 STP. It was noted, in addition, that UL 20 is a binational standard and that the STP process for UL 20 incorporates the input of the Technical Harmonization Committee. The consensus of the STP members present was to mai
39、ntain separate STPs for 498 and 20, but continue to combine STP meetings when possible. IAC representatives inquired about the possibility of separating IAC and STP meetings. It was noted that it would be more beneficial to hold IAC meetings prior to STP meetings so that Industry members can formula
40、te positions and develop proposals for the STP to consider. UL noted that this would be acceptable and that in the future, STP meetings will only be held when needed to develop proposals or resolve comments received in response to a proposal. Copyright Underwriters Laboratories Inc. Provided by IHS
41、under license with ULLicensee=Army Northwestern Div./7838506130 Not for Resale, 08/29/2006 08:33:40 MDTNo reproduction or networking permitted without license from IHS -,-,- SUBJECT 498 -4- AUGUST 6,2003 IAC representatives further expressed their desire to maintain yearly IAC meetings to be held in
42、 conjunction with one meeting of the 5WD Technical Committee of the NEMA Wiring Device Section. 4. The Status of Wiring Device Products Covered by the Standard for Exhibition Display Units, Fabrication and Installation, UL 2305 DISCUSSION Industry requested an update on the status of wiring devices
43、covered by the Standard for Exhibition Display Units, Fabrication and Installation, UL 2305. ULs Subject 2305 bulletin dated February 17, 2003 proposed several revisions to the First Edition of UL 2305. UL reported that comments have been received and addressed and that revision pages have been publ
44、ished June 13, 2003. Industry representatives expressed concern with the lack of communication to the wiring device industry during the development of UL 2305. UL 2305 covers under-carpet, convention-center cord sets and assembled-on or molded-on attachment plugs and cord connectors and it was felt
45、that UL could have better utilized wiring device industry members in developing these requirements. STP members noted that they would like for UL to develop a better method of communication to industries that may be affected by the requirements of other products to avoid such miscommunication in the
46、 future. UL would like to report that the subject of internal communication across product categories has been discussed at a meeting of a NEMNUL Audit Committee Task Force and will continue to be discussed at meetings of the NEMNUL Task Force on STPs. However, Industry representatives should alread
47、y be aware of the ”Products and Industries Affected by the Proposal” paragraph contained in all of ULs proposal bulletins which requests assistance in identifying other products or industries that might be affected by the requirements contained in the bulletin. Also, more recently, UL has launched a
48、 free e-mail service called Whats New for Standards Publications” which allows manufacturers to sign up and receive notification of every action taken by UL with respect to Standards development. In addition, it is expected that with the STP process and the new PDE initiative, communication both within UL and outside of UL will improve to avoid such situations in the future. 5. Updating UL 20 Horsepower Ratings DISCUSSION ULs STP 20 Bulletin dated November 26, 2002 contained a proposal to revise Table 16 of UL 20 to clarify switch ratings. UL reported that this proposa