UL 496-2017 UL Standard for Safety Lampholders (Fourteenth Edition).pdf

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1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 496 Lampholders STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHE

2、R REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Lampholders, UL 496 Fourteenth Edition, Dated September 5, 2017 Summary of Topics This new edition of ANSI/UL 496 include the following changes in requirements: Addition of SA2.4 and SA2.5, to Add Requirements for L

3、ampholder Fittings with Integral USB Connectors Addition of 4.8.6.6, to Add Requirements for Minimum Lead Wire Gauge Size for GU24 Outlet-Box Lampholders Addition of 4.9.10, to Clarify the Creepage Distances and Clearances Measurements Editorial Updates The new and or/revised requirements are substa

4、ntially in accordance with Proposal(s) on this subject dated May 23, 2016 and June 23, 2017. Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. All rights reserved. No part of this publication may be reproduced, stor

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8、emnify, and hold UL harmless from and against any loss, expense, liability, damage, claim, or judgment (including reasonable attorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer system. SEPTEMBER 5, 2017 UL 496

9、tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SEPTEMBER 5, 2017 UL 496 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CSA Group CSA C22.2 No. 43-17 Seve

10、nth Edition Underwriters Laboratories Inc. UL 496 Fourteenth Edition Lampholders September 5, 2017 ANSI/UL 496-2017UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Commitment for Amendments This standard is issued jointly by the Canadian Stan

11、dards Association (operating as “CSA Group”) and Underwriters Laboratories Inc. (UL). Comments or proposals for revisions on any part of the standard may be submitted to CSA Group or UL at any time. Revisions to this standard will be made only after processing according to the standards development

12、procedures of CSA Group and UL. CSA Group and UL will issue revisions to this standard by means of a new edition or revised or additional pages bearing their date of issue. ISBN 978-1-4883-0204-6 2017 CSA Group All rights reserved. No part of this publication may be reproduced in any form whatsoever

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16、e sole and exclusive property of UL. This ANSI/UL Standard for Safety consists of the Fourteenth Edition including revisions through September 5, 2017 The most recent designation of ANSI/UL 496 as an American National Standard (ANSI) occurred on September 5, 2017 ANSI approval for a standard does no

17、t include the Cover Page, Transmittal Pages, Title Page (front and back), or the Preface. Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time. Proposals should be submitted via a Proposal Request in ULs On-Line Collaborative Standards Development System

18、 (CSDS) at https:/. To purchase UL Standards, visit ULs Standards Sales Site at http:/ HowToOrder.aspx or call toll-free 1-888-853-3503. NOTE The users attention is called to the possibility that compliance with this standard may require use of an invention covered by patent rights. By publication o

19、f this standard, no position is taken with respect to the validity of this claim or of any patent rights in connection there with. The patent holder has, however, led a statement of willingness to grant a license under these rights on reasonable and nondiscriminatory terms and conditions to applican

20、ts desiring to obtain such a license. Details may be obtained from UL.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS Preface . 5 1 Scope .7 2 Denitions 8 3 General .12 3.1 Components 12 3.2 Units of Measurement 13 3.3 Reference Pub

21、lications .13 3.4 Terminology 16 4 Construction .16 4.1 Enclosures .16 4.2 Insulating Materials 16 4.3 Sealing Compound 17 4.4 Mounting .18 4.5 Accessibility of Live Parts 21 4.6 Corrosion Protection .22 4.7 Current-Carrying Parts .22 4.8 Supply Connections .23 4.9 Creepage Distances and Clearances

22、28 4.10 Screw Devices .29 4.11 Screw Lampholders for Use in Wet or Damp Locations .35 4.12 Pulse-Rated Lampholders .36 4.13 Lamplocks .37 4.14 Ceiling outlet-box lampholders .37 5 Tests .37 5.1 All Lampholders .37 5.2 Screw Lampholders 38 6 Ratings .53 6.1 Screw Lampholders 53 6.2 Lampholders Other

23、Than Screw-Type 54 7 Markings 54 7.1 General 54 7.2 Permanence 55 7.3 Lampholders for Factory Assembly 55 7.4 Details .56 7.5 Temperature Rating .57 SUPPLEMENT SA LAMPHOLDER ADAPTERS AND LOAD FITTINGS SA1 Scope .77 SA2 General 77 SA3 Screwshell Size Adapters 77 SA4 Lampholder Fittings .80 SA5 Temper

24、ature Test of Lampholder Fitting .80 SUPPLEMENT SB NAVAL-USE LAMPHOLDERS SB1 Scope .82 SEPTEMBER 5, 2017 CSA C22.2 NO. 43-17 UL 496 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SB2 Naval-Use Screw Lampholders General 82 SB3 Naval-Use Scr

25、ew Lampholders Materials .93 SB4 Naval-Use Screw Lampholders Current-Carrying Parts .94 SB5 Naval-Use Lampholders And Starter Holders For Fluorescent Lamps General 95 SB6 Naval-Use Lampholders And Starter Holders For Fluorescent Lamps Materials 100 SB7 High Temperature Test .100 SB8 Dielectric Volta

26、ge-Withstand Test 100 SB9 Screw Lampholders Security Tests of Screwshells .100 SB10 Lampholders And Starter Holders For Fluorescent Lamps Pull Test-Leads .100 SB11 Markings .101 SUPPLEMENT SC DIODE LAMP-LIFE EXTENDERS SC1 Scope 102 SC2 Construction .102 SC3 Marking .102 SC4 Tests .103 SC4.1 Accelera

27、ted aging .103 SC4.2 Thermal cycling .103 SC4.3 Dielectric strength .104 SC4.4 Limited short circuit 104 SUPPLEMENT SD LAMPHOLDERS FOR INSTANT-START FLUORESCENT LAMPS SD1 Scope 105 SD2 General .105 SD3 Material Properties of Lampholders 105 SD4 Mechanical Properties of Lampholders .105 SD5 Marking .

28、105 ANNEX A (normative) Standards for Components A1 Component Standards .107 SEPTEMBER 5, 2017 CSA C22.2 NO. 43-17 UL 496 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Preface This is the common CSA and UL standard for lampholders. It is

29、the seventh edition of CSA C22.2 No. 43, and the fourteenth edition of UL 496. This edition of CSA C22.2 No. 43 supersedes the previous editions published in 2008, 2004, 1984, 1965, 1958, and 1937. This edition of UL 496 supersedes the previous edition published in 2008. This common standard was pre

30、pared by a task force comprising members representing the Canadian Standards Association (CSA), Underwriters Laboratories Inc. (UL), NEMA (National Electrical Manufacturers Association), and EFC (Electro-Federation Canada). The efforts and support of the Technical Harmonization Committee for Lamphol

31、ders of the Council on the Harmonization of Electrotechnical Standards of the Nations of the Americas (CANENA) are gratefully acknowledged. This standard is considered suitable for use for conformity assessment within the stated scope of the standard. This standard was reviewed by the CSA Integrated

32、 Committee on Lighting Products, under the jurisdiction of the CSA Technical Committee on Consumer and Commercial Products and the CSA Strategic Steering Committee on Requirements for Electrical Safety, and has been formally approved by the CSA Technical Committee. This standard has been approved by

33、 the American National Standards Institute (ANSI) as an American National Standard. A UL standard is current only if it incorporates the most recently adopted revisions, all of which are itemized on the transmittal notice that accompanies the latest set of revised requirements. Where reference is ma

34、de to a specic number of samples to be tested, the specied number is to be considered a minimum quantity. Note: Although the intended primary application of this standard is stated in its scope, it is important to note that it remains the responsibility of the users of the standard to judge its suit

35、ability for their particular purpose. Level of harmonization This standard uses the IEC format but is not based on, nor is it to be considered equivalent to, an IEC standard. This standard is published as an identical standard for CSA and UL. An identical standard is a standard that is exactly the s

36、ame in technical content except for national differences resulting from conicts in codes and governmental regulations. Presentation is word for word except for editorial changes. Reasons for differences from IEC This standard provides requirements for Lampholders in accordance with the codes of Cana

37、da and USA. At present there is no IEC standard for Lampholders for use in accordance with these codes. Therefore, this standard does not employ any IEC standard for base requirements. SEPTEMBER 5, 2017 CSA C22.2 NO. 43-17 UL 496 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DI

38、STRIBUTION WITHOUT PERMISSION FROM UL Interpretations The interpretation by the standards development organization of an identical or equivalent standard is based on the literal text to determine compliance with the standard in accordance with the procedural rules of the standards development organi

39、zation. If more than one interpretation of the literal text has been identied, a revision is to be proposed as soon as possible to each of the standards development organizations to more accurately reect the intent. CSA effective date The effective date for CSA International will be announced throug

40、h CSA Informs or a CSA Certication Notice. SEPTEMBER 5, 2017 CSA C22.2 NO. 43-17 UL 496 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 1 Scope 1.1 The requirements of this standard cover holders and connectors for electric lamps, including

41、 incandescent, uorescent, and other electric-discharge-type lamps, rated as indicated in Clause 6, to be used in accordance with the Canadian Electrical Code (CEC), Part I, C22.1, and the National Electrical Code (NEC), ANSI/NFPA 70. 1.2 These requirements cover screw lampholders, including those in

42、tended to be mounted directly on an outlet-box, lampholders for special uses, lampholders for electric signs, and adapters that convert one lampholder size to another. 1.3 These requirements also cover holders for automatic starters used with uorescent lamps. 1.4 These requirements also cover GU24 a

43、nd GU24-1 holders for uorescent and LED self-ballasted lamps and uorescent lamp adapters with mating pin bases. 1.5 These requirements also cover indicator lamps. 1.6 These requirements also cover lampholder inserts. 1.7 These requirements also cover naval-use lampholders. See Supplement SB. 1.8 The

44、se requirements do not cover uorescent self-ballasted lamps and uorescent lamp adapters covered in UL 1993. 1.9 These requirements do not cover seasonal-lighting lampholders, which are covered in UL 588, and CSA C22.2 No. 37. 1.10 These requirements do not cover electrode receptacles for use in gas-

45、tube signs, which are covered in UL 879 and CSA C22.2 No. 34. 1.11 These requirements do not cover devices requiring a cross-bar, mounting strap, or other mounting means; such devices are considered to be luminaires. 1.12 These requirements do not cover nightlights, which are covered in UL 1786 and

46、CSA C22.2 No. 256. 1.13 These requirements do not cover ceiling outlet-box lampholders that incorporate one or more of the following features: a) more than one lampholder; b) provisions for conduit connection such as openings or knockout; c) an integral ballast, transformer or power supply; or d) a

47、lamp shade or lamp guard that completely encloses the lamp. Such devices are covered by UL 1598 and CSA C22.2 No. 250.0. SEPTEMBER 5, 2017 CSA C22.2 NO. 43-17 UL 496 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 1.14 In Canada, general re

48、quirements applicable to these products are provided in CAN/CSA-C22.2 No. 0. 2 Denitions 2.1 For the purpose of this standard, the following denitions apply: 2.2 Actuating member the part of a switch actuator that extends outside the body and is exposed to contact by the user. 2.3 Actuator the part

49、that drives a switch mechanism into action. 2.4 Adapter a device that adapts one form or size of connecting means to another, and in some cases incorporates circuits or controls such as a dimmer or photo-control or a switch. 2.5 Base that part of a lampholder that is used for mounting of the device. 2.6 Cap a component of screw-type lampholders that is provided to supply a mounting means for the lampholder, enclose live or current-carrying parts, and