1、C22.2 No. 45.2-08(reaffirmed 2013)Electrical Rigid Metal Conduit Aluminum, Red Brass, and Stainless SteelLegal Notice for StandardsCanadian Standards Association (CSA) standards are developed through a consensus standards development process approved by the Standards Council of Canada. This process
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17、is document or make any copies of the contents hereof, and if you do make such copies, you are required to destroy them immediately. Use of this document constitutes your acceptance of the terms and conditions of this Legal Notice.Update No. 1C22.2 No. 45.2-08November 2014Note: For information about
18、 the Standards Update Service, go to shop.csa.ca or e-mail techsupportcsagroup.org.Title: Electrical Rigid Metal Conduit Aluminum, Red Brass, and Stainless Steel originally published October 2008The following revisions have been formally approved and are marked by a vertical line in the margin on th
19、e attached replacement pages:Revised Title page, copyright page, Preface, Table 5.1, Annex, and Clauses 7.7 and 7.8New Clauses 5.3.4, 6.2, and 7.9Deleted Update your copy by inserting these revised pages.Keep the pages you remove for reference.Association of Standardization and CertificationNMX-J-57
20、6-ANCESecond EditionCSA GroupCSA C22.2 No. 45.2-08First EditionUnderwriters Laboratories, Inc.UL 6ASecond EditionElectrical Rigid Metal Conduit Aluminum, Red Brass, and StainlessSteelOctober 31, 2008(Title Page Reprinted: November 14, 2014)ANSI/UL 6A-2014Commitment for AmendmentsThis standard is iss
21、ued jointly by the Association of Standardization and Certification (ANCE),Canadian Standards 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 ANCE, CSAGroup, or UL at any time. Revisio
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23、e revisions into a new edition of the standard bearing the samedate of issue as the CSA Group and UL pages.Copyright 2014 ANCERights reserved in favor of ANCE.ISBN 978-1-55436-679-8 2008 CSA GroupAll rights reserved. No part of this publication may be reproduced in any form whatsoever without thepri
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26、pyright 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 the sole and exclusive pro
27、perty of UL.This ANSI/UL Standard for Safety consists of the Second Edition including revisions through November14, 2014. The most recent designation of ANSI/UL 6A as an American National Standard (ANSI)occurred on November 14, 2014. ANSI approval for a standard does not include the Cover Page,Trans
28、mittal 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 StandardsDevelopment System (CSDS) at http:/.To purchase UL S
29、tandards, visit Comm 2000 at http:/m- call toll-free 1-888-853-3503.CONTENTSPreface .41 Scope .62 Normative references 63 Definitions 64 Units of measurement .75 Construction 75.1 Tube 75.2 Finished conduit 85.3 Protective coatings 105.4 Threading and chamfering 105.5 Nipples .115.6 Elbows .145.7 Th
30、readed couplings 146 Test requirements 156.1 Tube .156.2 Protective coatings 167 Markings 1617Annex A (normative)A1 Normative references .19Annex B (informative)B1 Dimensions of conduit .20AAnnex C (informative)C1 Examination of finished product by manufacturer .21Annex D (normative)D1 Alternative N
31、ational Markings 22NOVEMBER 14, 2014 NMX-J-576-ANCE CSA C22.2 NO. 45.2-08 UL 6A 3PrefaceThis is the common ANCE, CSA Group, and UL standard for electrical rigid metal conduit aluminum,red brass, and stainless steel. It is the second edition of NMX-J-576-ANCE, the first edition of CSA C22.2No. 45.2,
32、and the second edition of UL 6A. This edition of UL 6A supersedes the previous editionpublished on July 21, 2000.This common standard was prepared by the Association of Standardization and Certification (ANCE),CSA Group, and Underwriters Laboratories Inc. (UL). The efforts and support of the conduit
33、 manufacturingindustry and the Technical Harmonization Subcommittee for Conduit and Tubing of the Council on theHarmonization of Electrotechnical Standards of the Nations of the Americas (CANENA) are gratefullyacknowledged.This standard is considered suitable for use for conformity assessment within
34、 the stated scope of thestandard.The present Mexican standard was developed by CT Technical Committee 23 Electrical Accessories fromthe Comite de Normalizacion de la Asociacion de Normalizacion y Certificacion, A.C., CONANCE, with thecollaboration of the metal conduit and tubing manufacturers and us
35、ers.This standard was reviewed by the CSA Subcommittee on Metal Conduit and Tubing, under thejurisdiction of the CSA Technical Committee on Wiring Products and the CSA Strategic SteeringCommittee on Requirements for Electrical Safety, and has been formally approved by the CSA TechnicalCommittee.This
36、 standard has been approved by the American National Standards Institute (ANSI) as an AmericanNational Standard.Application of StandardWhere reference is made to a specific number of samples to be tested, the specified number is to beconsidered a minimum quantity.Note: Although the intended primary
37、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 harmonizationThis standard uses the IEC format but is not based on, nor is it to be considered eq
38、uivalent to, an IECstandard. This standard is published as an equivalent standard for ANCE, CSA Group, and UL. Anequivalent standard is a standard that is substantially the same in technical content, except as follows:Technical national differences are allowed for codes and governmental regulations
39、as well as thoserecognized as being in accordance with NAFTA Article 905, for example, because of fundamental climatic,geographical, technological, or infrastructural factors, scientific justification, or the level of protection thatthe country considers appropriate. Presentation is word for word ex
40、cept for editorial changes.Reasons for differences from IECThe Technical Harmonization Subcommittee identified several IEC standards that address electricalconduit and tubing included in the scope of this standard. The IEC standards for electrical conduit andtubing are recognized as being generally
41、system-specific, containing the requirements for the relevantconduits and cables and associated fittings in several discrete IEC standards.NOVEMBER 14, 2014NMX-J-576-ANCE CSA C22.2 NO. 45.2-08 UL 6A4The THSC determined the safe use of electrical conduit and tubing is dependent on the design andperfo
42、rmance of the conduit and tubing systems with which they are intended to be installed. Significantinvestigation is required to assess safety and system compatibility issues that may lead to harmonizationof traditional North American electrical conduit and tubing and associated fittings with those pr
43、esentlyaddressed in the known IEC standards. The THSC agreed such future investigation might be facilitatedby the completion of harmonization of the North American standards for electrical conduit and tubing andtheir fittings.InterpretationsThe interpretation by the standards development organizatio
44、n 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 be proposed as soo
45、n as possible to each of the standards developmentorganizations to more accurately reflect the intent.ANCE Effective DateThe effective date for ANCE will be announced through the Diario Oficial de la Federacin (OfficialGazette) and is indicated on the cover page.CSA Group Effective DateThe effective
46、 date for CSA International will be announced through a CSA Informs or CSA GroupCertification Notice.UL effective dateAs of November 14, 2014, all products Listed or Recognized by UL must comply with the requirements inthis standard.A UL effective date is one established by Underwriters Laboratories
47、 Inc. and is not part of the ANSIapproved standard.NOVEMBER 14, 2014 NMX-J-576-ANCE CSA C22.2 NO. 45.2-08 UL 6A 5Electrical Rigid Metal Conduit Aluminum, Red Brass, and StainlessSteel1 Scope1.1 These requirements cover aluminum (ERMC-A) and stainless steel (ERMC-SS) electrical rigid metalconduit, ni
48、pples, elbows, and couplings in 12 155 (3/8 6) trade sizes for use as metal raceway for theinstallation of wires and cables in accordance with CSA C22.1, Canadian Electrical Code, Part 1,NOM-001-SEDE, Standard for Electrical Installations, and NFPA 70, National Electrical Code (seeReference Item No.
49、 1, Annex A). It is the users responsibility to determine the appropriate product for theapplication.1.2 These requirements also cover red brass (ERMC-RB) electrical rigid metal conduit, nipples, elbows,and couplings in 16 (1/2) trade size for use as metal raceway for the installation of wires and cables indirect burial and swimming pool applications in accordance with the applicable national electricalinstallation codes.1.3 Steel conduit is covered by the standards listed in Reference Item No.
