1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUNDERWRITERS LABORATORIES INC. CERTIFICATION REQUIREMENT DECISIONThis Certification Requirement Decision is prepared and published by Underwriters Laboratories Inc.(UL). It is normative for the a
2、pplicable UL Product Certification Program(s); however, it is currently notpart of the UL Standard(s) referenced below.Product Category (CCN): ZMVV/7Standard Number: UL 486CStandard Title: Standard for Splicing Wire ConnectorsEdition Date: January 11, 2013Edition Number: 6Section / Paragraph Referen
3、ce: 1.1, 2.1.3, 2.1.4, 2.1.5, 2.1.6, 6.3.10, 7.15, 8.15, 9.15,10.25, Table 8, Annex FSubject: Addition of Plenum Requirements for Wire ConnectorsDECISION:1.1 This Standard applies to single-polarity, hand- or tool-applied splicing wire and cable connectorsintended for use with all alloys of copper,
4、aluminum conductors, or copper-clad aluminum conductors, orall three, in accordance with the Canadian Electrical Code Part I, C22.1, in Canada, the National ElectricalCode, NFPA-70, in the United States of America, or the Standard for Electrical Installations,NOM-001-SEDE, in Mexico, as follows:Note
5、: Copper-clad aluminum conductors are for use only in the United States in accordance with the NationalElectrical Code, NFPA 70.a) connectors intended to hold two or more conductor(s);b) connectors intended for use in appliances and equipment that comply with the requirementsfor such appliances and
6、equipment;c) connectors intended for use with 6 AWG (13.3 mm2) or smaller conductors; andd) uninsulated connectors that are used in circuits rated 8 000 V and less; ande) connectors intended for use in air-handling spaces.Note: Examples of splicing wire connectors include twist-on connectors, insula
7、tion-piercing or displacement connectors, spring-action connectors, tool-applied crimp,mechanical set-screw connectors, etc.2.1.3 UL StandardsUL 746CPolymeric Materials Use in Electrical Equipment EvaluationsUL 2043 (NEW)Fire Test for Heat and Visible Smoke Release for Discrete Products and Their Ac
8、cessories Installed inAir-Handling Spaces2.1.4 ULC Standards (NEW)UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULULC/ORD-C2043Standard for Fire Test for Heat and Visible Smoke Release for Discrete Products and Their AccessoriesInstalled in Ai
9、r-Handling Spaces2.1.4.5 NFPA* StandardsANSI/NFPA 70-2011National Electrical Code (NEC)* National Fire Protection Association2.1.5.6 NOM Standards - Mexican Secretary of EnergyNOM-001-SEDEStandard for Electrical Installations6.3.10 (NEW) Connectors intended to be installed in air-handling spaces and
10、 marked Suitable for Use inAir-Handling Spaces, or equivalent, as indicated in 10.25, shall comply with System Flammability -Discrete Components Located In Air-Handling Spaces, clause 7.15.7.15 (NEW) System Flammability - Discrete Components Located In Air-Handling Spaces7.15.1 After being subjected
11、 to the test specified in 9.15, each sample set of wire connectors intended tobe installed in air-handling spaces shall comply with the following parameters:a) The peak rate of heat release (HRRc) measured during each test shall be 100 kW or less.b) The peak normalized optical density measured durin
12、g each test shall be 0.50 or less.c) The average normalized optical density (10 min test duration) shall be 0.15 or less.8.15 (NEW) System Flammability - Discrete Components Located In Air-Handling Spaces8.15.1 The sample set for this test shall be the maximum number of wire connectors that will be
13、withinany 6-m (20-ft) square suspended ceiling grid area, as specified in the markings. Wire connectors shallbe tested in sample sets of twenty four (24), unless the markings for the connector identify a largernumber. See 10.25.9.15 (NEW)9.15.1 Wire connectors intended for use in air-handling spaces
14、 shall be subjected to the tests in:In Canada:Standard for Fire Test for Heat and Visible Smoke Release for Discrete Products andTheir Accessories Installed in Air-Handling Spaces, ULC/ORD-C2043.In the United States:STANDARD NUMBER: UL 486C -2-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRO
15、DUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULStandard for Fire Test for Heat and Visible Smoke Release for Discrete Products andTheir Accessories Installed in Air-Handling Spaces, UL 2043.aaProducts evaluated in accordance with these requirements are considered to comply with the fire retardant
16、and low smokeproducing requirements of Section 300 of National Electrical Code, ANSI/NFPA 70; Chapter 4 of Standard for the Installation ofAir-Conditioning and Ventilating Systems, NFPA 90A; Section 602 of the International Mechanical Code; and Section 602 of theUniform Mechanical Code.10.25 (New) T
17、he connector, unit container or information sheet for a connector that has been foundsuitable for installation in air-handling spaces shall be marked Suitable for use in Air-Handling Spaces(Plenums), or equivalent. The markings shall also state No more than twenty four (24) connectors areto be insta
18、lled within a 20-ft square suspended ceiling grid area unless a larger number is tested per8.15.1, in which case the larger number may be cited.Table 8 Minimum number of specimens for test(Clauses 8.1.1, 8.2.1, 8.3.1, 8.4.1, 8.5.1, 8.6.1, 8.7.1, 8.8.1, 8.9.1, 8.10.1, 8.11.1, 8.12.1, 8.13.1, and8.14.
19、1 and 8.15.1)Clause Test Number of specimens9.2 Current cycling 4 of each combination of connector andtest conductor(s)9.3 Static-heating sequence 4 of each combination of connector andtest conductor(s)9.4Mechanical sequence 2 of each combination of connector andtest conductor(s)Dielectric withstand
20、Thermosetting, e.g., porcelain, cold-molded melamine, phenolic, orurea-compound9.5.2 TestA-asreceived 12a9.5.3 TestB-asreceived 12a9.5.4 TestC-asreceived 12aThermoplastic, e.g., vinyl or nylon9.5.2 TestAasreceived 12a9.5.2 Test A after oven conditioning with specimensassembled to conductor before su
21、ch conditioning12a9.5.2 Test A after oven conditioning with specimensassembled to conductor after such conditioning12a9.5.3 TestB-asreceived 12a9.5.4 TestC-asreceived 6Secureness of insulation9.6.1 As received 69.6.3(a) a) Unassembled as received 6 after oven conditioning 69.6.3(b) b) Assembled as r
22、eceived 12a connected to a conductor before oven conditioning 12a connected to a conductor after oven conditioning 12a9.7Flexing as received 6b after oven conditioning 6b after oven conditioning 6b after cold conditioning 6bSTANDARD NUMBER: UL 486C -3-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTH
23、ER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULTable 8 Minimum number of specimens for test ContinuedClause Test Number of specimens9.8 Low temperature installation 12a9.9 Moisture absorption 39.10 or 9.11 Stress corrosion/moist NH4orStress corrosion/mercurous nitrate (HgNO3)39.12 Spring-a
24、ction clamp sequence 6 of each combination of connector andtest conductor(s)9.13 Over-torque 69.14 Separable part securement 69.15 System Flammability - Discrete Components Located In Air-Handling Spaces24aSix specimens with maximum conductor size and six specimens with minimum conductor size.bTest
25、with the maximum conductor size.Annex F Marking Locations Guide(Informative)(Clause 10.1)Table F.1 Marking locationsClause SubjectaLocation optionsa,bGeneral10.2 a) Manufacturers name or trademark A10.2 b) Catalog number Ac10.2 c), 10.5 g) Conductor size or range of sizes Ac,BConductor type and conn
26、ectorratings10.4, 10.5 Conductor material, CU A, B10.4, 10.5 Conductor material, AL, AL-CU, etc A, B10.5 Intermixing, (intermixed dry locations) A, BStranding and other conductor types10.8, 10.9 Solid and/or stranded A, B10.10 Other conductor classes and stranding A, B10.21, 10.22 Metric conductors
27、A, BMiscellaneous ratings10.24 One time use A, B10.19, 10.20 OEM for factory installation only A10.18, 10.20 Pre-twist Wires Before Crimping A10.6 To Be Sold Only With InstallationInstructionsB10.25 Suitable for use in Air-HandlingSpaces, or equivalent. No more than twenty four (24)connectors are to
28、 be installed within a20-ft square suspended ceiling gridareaA, BInstallation and assemblyinstructionsSTANDARD NUMBER: UL 486C -4-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULTable F.1 Marking locations ContinuedClause SubjectaLocation opti
29、onsa,b10.12 Proper assembly procedure forconnectora) Specific tool usage A, Bb) Multiple crimping A, B, Cc) Strip length A, B, C, Dd) Preliminary preparation B10.11 Rearrangement/adjustment instructionsto adapt to different sizesA, BInsulated connectors10.4, 10.5, 10.16 Voltage A, B10.23 Flammabilit
30、y A, B10.4, 10.5, 10.15 Maximum operating temperature limit ofinsulationA, B, D10.14 Separable insulating cover B, D Manufacturers name Catalog number or equivalent Voltage Maximum operating temperature limitUnit container and information sheet10.13 Unit container / information sheet B Manufacturers
31、 name Catalog number or equivalentaThis is a brief summary of marking requirements. For complete details see the specific clause.bMarking locations are coded as follows:A. On the connector.B. On the unit container or information sheet within the unit container. Markings shall not be divided between
32、unitcontainer and information sheet; see 10.17.C. On or with the tool.D. On the insulator.cFor small devices, may be replaced with an identifying symbol. See 10.3.RATIONALE FOR DECISION:This CRD documents new requirements for splicing wire connectors suitable for use in Air-HandlingSpaces”, “Plenum
33、Rated” or equivalent.NEC Section 300.22(C)(1) provides requirements for wiring methods in spaces used for environmental air,such as above a suspended ceiling. Splicing wire connectors may be used in conjunction with some ofthe open-type wiring methods permitted by this Section. The UL Standard for F
34、ire Test for Heat andVisible Smoke Release for Discrete Products and Their Accessories Installed in Air-Handling Spaces, UL2043 is one method used to determine acceptability of use in these locations. This CRD providesspecifications for how to evaluate splicing wire connectors for compliance with UL
35、 2043.In determining sample selection criteria for UL 486C, consideration was given to the test method outlinedin the Standard for Suspended Ceiling Grid Low Voltage Systems, UL 2577. This Standard evaluatesequipment that can be installed per NEC Section 300.22(C), as noted in the guide information
36、for“Suspended-ceiling-grid Low-voltage Systems”:STANDARD NUMBER: UL 486C -5-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULAir-handling Use Each nonmetallic suspended-ceiling-grid low-voltage system component(e.g., accessory, grid rail, conne
37、ctor) suitable for installation in air-handling spaces is markedSuitable for Use in Air-handling Spaces,Suitable for Use in Other Environmental Air Spacein Accordance with Section 300.22(C) of the National Electrical Code,Suitable for Use in Air-handling Spaces in Accordance with Section 300.22(C) o
38、f the National Electrical Code, orequivalent wording. Products that bear this marking are suitable for installation in accordancewith NEC 300.22(C), Chapter 4 of ANSI/NFPA 90A, Installation of Air-Conditioning andVentilating Systems, Section 602 of the International Mechanical Code, and Section 602
39、ofthe Uniform Mechanical Code.A sample size of 24 wire connectors has been established based on 2 criteria:1. Number of connectors that could be used in a 20 sq. foot areaUL 2577 has established requirements for components located in an air handling spaces. Fivegrid rail connectors were selected as
40、the maximum number that would be used in a 20 sq. footarea. This would result in 20 connections.2. Safety FactorApplying a safety factor of 20% yields a sample size of 24 wire connectors.Copyright 2014 Underwriters Laboratories Inc.UL, in performing its functions in accordance with its objectives, d
41、oes not guarantee or warrant thecorrectness of Certification Requirement Decisions it may issue or that they will be recognized or adoptedby anyone. Certification Requirement Decisions are the opinion of Underwriters Laboratories Inc. inpractically applying the requirements of the standard. They do
42、not represent formal interpretations of thestandard under American National Standards Institute (ANSI) processes. UL shall not be responsible toanyone for the use of or reliance upon Certification Requirement Decisions by anyone. UL shall not incurany obligation or liability for damages, including c
43、onsequential damages, arising out of or in connectionwith the use or reliance upon Certification Requirement Decisions. The electronic version of theCertification Requirement Decision is the current version and previously printed copies may be outdated.This document is published as a service to ULs certification customersSTANDARD NUMBER: UL 486C -6-
