1、C22.2 No. 256-14Direct plug-in nightlightsLegal Notice for StandardsCanadian Standards Association (operating as “CSA Group”) develops standards through a consensus standards development process approved by the Standards Council of Canada. This process brings together volunteers representing varied
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16、463-6727 or 416-747-4004.Copyright 2014 Underwriters Laboratories Inc.ULs Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy of a Standardshould be altered in any way. All of ULs Standards and all copyrights, ownerships, and rights regardingthose Standards shall remain
17、 the sole and exclusive property of UL.This ANSI/UL Standard for Safety consists of the Fourth edition. The most recent designation ofANSI/UL 1786 as an American National Standard (ANSI) occurred on December 17, 2014. ANSIapproval for a standard does not include the Cover Page, Transmittal Pages, Ti
18、tle Page (front andback), 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 StandardsDevelopment System (CSDS) at http:/.To purchase UL Standards, visit C
19、omm 2000 at http:/m- call toll-free 1-888-853-3503.CONTENTSPreface .51 Scope .72 Reference Publications 73 Components 94 Units of Measurement .95 Application of Requirements .96 Definitions 107 Construction .117.1 Enclosures General 117.2 Polymeric materials for enclosure and electrical insulation 1
20、27.3 Enclosure assembly methods .137.4 Corrosion protection .137.5 Current-carrying parts 137.6 Plug blades .147.7 Plug face dimensions 147.8 Polarization and identification .147.9 Switching mechanisms .157.10 Lampholder 157.11 Wiring and terminal connections .157.12 Internal wiring 167.13 Spacing o
21、f conductive parts .177.14 Grounding and bonding .187.15 Maximum tipping moment .187.16 Electroluminescent panels .187.17 Incandescent lamps 197.18 LED light sources 197.19 Receptacle 197.20 Ballasts .207.21 Vessels containing a liquid 208 General Tests .208.1 General 208.2 Accessibility of live par
22、ts .218.3 Dielectric voltage-withstand .218.4 Plug blades accessibility .229 Normal Operation Tests 229.1 Temperature 229.2 Lampholder and lamp base accessibility .2310 Component Tests .2310.1 Switch mechanism .2310.2 Plug blade secureness test 2510.3 Folded blade compression test .2610.4 Mold stres
23、s-relief distortion test 2610.5 Lamp cavity separation test 2610.6 Pull test .2710.7 Enclosure impact test .2711 Abnormal Tests .2711.1 Blanketing test .2711.2 Overlamping test .2811.3 Limited short-circuit test .29DECEMBER 17, 2014 CSA C22.2 NO. 256-14 UL 1786 311.4 Overvoltage test .2911.5 Compone
24、nt breakdown test .2911.6 Voltage surge test 3011.7 Humidity conditioning test .3111.8 Leakage-current test 3111.9 Grounding continuity test 3311.10 Crush test 3411.11 Torque test .3411.12 Rotational endurance test 3412 Factory Production Tests 3412.1 Dielectric voltage-withstand test 3412.2 Additio
25、nal factory production tests in Canada 3613 Marking 36Annex A (Normative) Standards for componentsAnnex B (CAN) (Normative) Grounding and bonding of electrical equipmentB.1 General .56B.2 Impedance 56B.3 Impedance Test .56ANNEX C (CAN) (Normative) Printed circuit-board requirementsC.1 Application 57
26、C.2 Special Terminology 57C.3 General .57C.4 Printed Circuit-Board Coatings Tests .58C.4.1 Dielectric strength .58C.4.2 Adhesion .59C.4.3 Abrasion resistance test apparatus 59C.4.4 Insulation Resistance Test Voltage 60C.4.5 Fault conditions test .61C.5 Bond Strength of Printed-Wiring Boards 61C.5.1
27、General 61C.5.2 Test procedure 62Annex D (CAN) (Normative) Factory Tests for CanadaD.1 Grounding continuity .63D.2 Separation 63D.3 Candelabra lamp devices .63D.4 Test records .64Annex E (CAN) (Informative) French translations and markingsDECEMBER 17, 2014CSA C22.2 NO. 256-14 UL 17864PrefaceThis is
28、the common CSA Group and UL Standard for Direct Plug-In Nightlights. It is the second edition ofCSA C22.2 No. 256 and the fourth edition of UL 1786. This edition of CSA C22.2 No. 256 supersedes theprevious edition published in 2005. This edition of UL 1786 supersedes the previous editions published
29、in1995, 1988, and 2005.This common Standard was prepared by the CSA Group and Underwriters Laboratories Inc. (UL). Theefforts and support of the CANENA Technical Harmonization Committee are gratefully acknowledged.This Standard was reviewed by the CSA Subcommittee on Lighting Products, under the jur
30、isdiction of theCSA Technical Committee on Consumer and Commercial Products and the CSA Steering Committee onRequirements for Electrical Safety, and has been formally approved by the CSA Technical Committee.This Standard has been approved by the American National Standards Institute (ANSI) for publi
31、cation asan American National Standard.A UL Standard is current only if it incorporates the most recently adopted revisions, all of which areitemized on the transmittal notice that accompanies the latest set of revised requirements.Where reference is made to a specific number of samples to be tested
32、, the specified number isconsidered to be a minimum quantity.Note: Although the intended primary application of this Standard is stated in its scope, it is important to note thatit remains the responsibility of the users of the Standard to judge its suitability for their particular purpose.Level of
33、harmonizationThis Standard uses the IEC format but is not based on, nor is it to be considered equivalent to, an IECStandard. This Standard is published as an equivalent Standard for CSA Group and UL. An equivalentStandard is a Standard that is substantially the same in technical content, except as
34、follows: Technicalnational differences are allowed for codes and governmental regulations as well as those recognized asbeing in accordance with NAFTA Article 905, for example, because of fundamental climatic, geographical,technological, or infrastructural factors, scientific justification, or the l
35、evel of protection that the countryconsiders appropriate. Presentation is word for word except for editorial changes.Reasons for differences from IECThere is not an IEC Standard that is equivalent to the requirements contained in this Standard.InterpretationsThe interpretation by the standards devel
36、opment organization of an identical or equivalent Standard isbased on the literal text to determine compliance with the Standard in accordance with the proceduralrules of the standards development organization. If more than one interpretation of the literal text has beenidentified, a revision is to
37、be proposed as soon as possible to each of the standards developmentorganizations to more accurately reflect the intent.CSA Group Effective DateThe effective date for CSA Group will be announced through CSA Informs or a CSA Group CertificationNotice.DECEMBER 17, 2014 CSA C22.2 NO. 256-14 UL 1786 5UL
38、 Effective DateAs of December 17, 2014, all products Listed or Recognized by UL must comply with the requirements inthis standard except for the following:Clauses 6.3, 7.1.12, and 10.7.4 are effective August 21, 2017.A UL effective date is one established by Underwriters Laboratories Inc. and is not
39、 part of the ANSIapproved Standard.DECEMBER 17, 2014CSA C22.2 NO. 256-14 UL 178661 Scope1.1 This Standard applies to direct plug-in nightlights not exceeding 10 W input, for indoor use only, innon-hazardous locations and intended to be used in accordance with the Canadian Electrical Code, PartI, CSA
40、 C22.1, and the National Electrical Code, ANSI/NFPA 70. Light source types include incandescentcandelabra base lamps, non-replaceable lamps, fluorescent, neon, or light-emitting diode (LED) type orelectroluminescent panels.1.2 These requirements cover direct plug in nightlights for insertion into a
41、parallel slot receptacle rated125 volts maximum.1.3 These requirements do not cover:(a) cord-connected luminaires;(b) nightlights with more than one receptacle;(c) direct plug-in devices with other primary functions, such as room deodorizers, insectrepellers, or rechargeable flashlights; or(d) direc
42、t plug-in devices utilizing plasma light.2 Reference Publications2.1 For undated references to Standards, such reference shall be considered to refer to the latest editionand all revisions to that edition up to the time when this Standard was approved. For dated references toStandards, such referenc
43、e shall be considered to refer to the dated edition and all revisions published tothat edition up to the time the Standard was approved.2.2 Products covered by this Standard shall comply with the reference installation codes and Standardsas appropriate for the country where the product is to be used
44、. When the product is intended for use inmore than one country, the product shall comply with the installation codes and Standards for all countrieswhere it is intended to be used. A list of reference publications is provided below.CSA GroupC22.1-12Canadian Electrical Code, Part IC22.2 No. 0.4-04 (R
45、2013)Bonding of Electrical EquipmentCAN/CSA-C22.2 No. 0.17-00 (R2013)Evaluation of Properties of Polymeric MaterialsC22.2 No. 42-10General Use Receptacles, Attachment Plugs, and Similar Wiring DevicesCAN/CSA C22.2 No. 60065-03 (R2012)Audio, Video, and Similar Electronic Apparatus Safety Requirements
46、DECEMBER 17, 2014 CSA C22.2 NO. 256-14 UL 1786 7UL (Underwriters Laboratories Inc)UL 498Attachment Plugs and ReceptaclesUL 498ACurrent Taps and AdaptersUL 746CPolymeric Materials Use in Electrical Equipment EvaluationsUL 796Printed-Wiring BoardsUL 840Insulation Coordination Including Clearances and
47、Creepage Distances for Electrical EquipmentUL 1449Surge Protective DevicesASTM (American Society for Testing and Materials)ASTM D 1000Standard Test Methods for Pressure-Sensitive Adhesive-Coated Tapes Used for Electrical and ElectronicApplicationsANSI/ASTM E230/E230MStandard Specification and Temper
48、ature-Electromotive Force (emf) Tables for StandardizedThermocouplesIEC (International Electrotechnical Commission)IEC 60061-1Lamp caps and holders together with gauges for the control of interchangeability and safety Part 1: LampcapsIEC 60664-1Insulation coordination for equipment within low-voltag
49、e systems Part 1: Principles, requirements andtestsNEMA (National Electrical Manufacturers Association)NEMA ANSLG C81.61Electrical Lamp Bases Specifications for Bases (Caps) for Electric LampsNEMA ANSLG C81.63aGauges for Electric Lamp Bases and LampholdersNFPA (National Fire Protection Association)ANSI/NFPA 70National Electrical Code
