1、NEMA Standards PublicationNational Electrical Manufacturers AssociationNEMA TC 9-2004 Fittings for Polyvinyl Chloride (PVC) Plastic Utilities Duct for Underground InstallationNEMA Standards Publication TC 9-2004 Fittings for Polyvinyl Chloride (PVC) Plastic Utilities Duct for Underground Installatio
2、n Published by: National Electrical Manufacturers Association 1300 North 17th Street, Suite 1847 Rosslyn, Virginia 22209 www.nema.org Copyright 2004 by the National Electrical Manufacturers Association. All rights including translation into other languages, reserved under the Universal Copyright Con
3、vention, the Berne Convention for the Protection of Literary and Artistic Works, and the International and Pan American Copyright Conventions. NOTICE AND DISCLAIMER The information in this publication was considered technically sound by the consensus of persons engaged in the development and approva
4、l of the document at the time it was developed. Consensus does not necessarily mean that there is unanimous agreement among every person participating in the development of this document. The National Electrical Manufacturers Association (NEMA) standards and guideline publications, of which the docu
5、ment contained herein is one, are developed through a voluntary consensus standards development process. This process brings together volunteers and/or seeks out the views of persons who have an interest in the topic covered by this publication. While NEMA administers the process and establishes rul
6、es to promote fairness in the development of consensus, it does not write the document and it does not independently test, evaluate, or verify the accuracy or completeness of any information or the soundness of any judgments contained in its standards and guideline publications. NEMA disclaims liabi
7、lity for any personal injury, property, or other damages of any nature whatsoever, whether special, indirect, consequential, or compensatory, directly or indirectly resulting from the publication, use of, application, or reliance on this document. NEMA disclaims and makes no guaranty or warranty, ex
8、pressed or implied, as to the accuracy or completeness of any information published herein, and disclaims and makes no warranty that the information in this document will fulfill any of your particular purposes or needs. NEMA does not undertake to guarantee the performance of any individual manufact
9、urer or sellers products or services by virtue of this standard or guide. In publishing and making this document available, NEMA is not undertaking to render professional or other services for or on behalf of any person or entity, nor is NEMA undertaking to perform any duty owed by any person or ent
10、ity to someone else. Anyone using this document should rely on his or her own independent judgment or, as appropriate, seek the advice of a competent professional in determining the exercise of reasonable care in any given circumstances. Information and other standards on the topic covered by this p
11、ublication may be available from other sources, which the user may wish to consult for additional views or information not covered by this publication. NEMA has no power, nor does it undertake to police or enforce compliance with the contents of this document. NEMA does not certify, test, or inspect
12、 products, designs, or installations for safety or health purposes. Any certification or other statement of compliance with any health or safetyrelated information in this document shall not be attributable to NEMA and is solely the responsibility of the certifier or maker of the statement. TC 9-200
13、4 Page i Copyright 2004 by the National Electrical Manufacturers Association. CONTENTS Page Foreword ii Section 1 GENERAL . 1 1.1 Scope. 1 1.2 Referenced Standards 1 Section 2 DEFINITIONS AND ABBREVIATIONS 2 2.1 Definitions and Abbreviations 2 Section 3 GENERAL REQUIREMENTS. 3 3.1 Materials 3 3.2 Tr
14、ade Sizes . 3 3.3 Dimensions 3 3.4 Workmanship. 3 TC 9-2004 Page ii Copyright 2004 by the National Electrical Manufacturers Association. Foreword In the preparation of this Standards Publication, input of users and other interested parties has been sought and evaluated. Inquiries, comments, and prop
15、osed or recommended revisions should be submitted to the concerned NEMA product Subdivision by contacting the: Vice President, Engineering National Electrical Manufacturers Association 1300 North 17th Street Rosslyn, Virginia 22209 AFC Cable SNew Bedford, MA CANTEX, IMineral Wells, TX Carlon, Lamson
16、 or b. Bends and sweeps may have a molded coupling on one end with socket dimensions conforming to those of Table 3-2. TC 9-2004 Page 13 Copyright 2004 by the National Electrical Manufacturers Association. Table 3-16 5-DEGREE ANGLE COUPLINGS U.S. Customary Units (in.) Metric Units (mm) Metric Desig-
17、nator Trade Size M Maximum N Maximum X Average X Tolerance M Maximum N Maximum X Average X Tolerance 53 2 2-9/16 3/16 2.375 0.006 65.1 4.8 60.32 0.15 78 3 3-3/32 7/32 3.500 0.008 94.5 5.6 88.90 0.20 103 4 4-51/64 14/64 4.500 0.009 121.8 6.0 114.30 0.23 129 5 5-59/64 15/64 5.563 0.010 150.4 10.0 141.
18、30 0.25 155 6 7-1/64 9/16 6.625 0.011 178.2 14.3 168.21 0.28 Thermoformed (Fabricated) Bell by Spigot Thermoformed (Fabricated) Bell by Bell NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION 1300 NORTH 17TH STREET, SUITE 900 ROSSLYN. VA 22209www.NEMA.orgTO ORDER ADDITIONAL NEMA STANDARDS VISITWWW.GLOBAL.IHS.COM OR CALL 1-800-854-7179/1-303-397-79565612_0514TB
