1、NEMA Standards PublicationNational Electrical Manufacturers AssociationNEMA TC 3-2015Polyvinyl Chloride (PVC)Fittings for Use withRigid PVC Conduit andTubingNEMA Standards Publication TC 3-2015 Polyvinyl Chloride (PVC) Fittings for Use with Rigid PVC Conduit and Tubing Published by: National Electri
2、cal Manufacturers Association 1300 North 17th Street, Suite 900 Rosslyn, Virginia 22209 www.nema.org 2015 National Electrical Manufacturers Association. All rights, including translation into other languages, reserved under the Universal Copyright Convention, the Berne Convention for the Protection
3、of Literary and Artistic Works, and the International and Pan American copyright conventions. 2015 National Electrical Manufacturers Association NOTICE AND DISCLAIMER The information in this publication was considered technically sound by the consensus of persons engaged in the development and appro
4、val 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 do
5、cument 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 r
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8、expressed 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 manufa
9、cturer 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 e
10、ntity 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
11、 publication 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 inspe
12、ct products, designs, or installations for safety or health purposes. Any certification or other statement of compliance with any health- or safety-related information in this document shall not be attributable to NEMA and is solely the responsibility of the certifier or maker of the statement. NEMA
13、 TC 3-2015 Page i 2015 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 proposed or recommended revisions should be submitted to the concerned N
14、EMA product Subdivision by contacting: Senior Technical Director, Operations National Electrical Manufacturers Association 1300 North 17th Street, Suite 900 Rosslyn, Virginia 22209 This standards publication was approved by the Polymer Raceway Section. At the time of publication, the section had the
15、 following members: Anamet Electrical, Inc.http:/ Mattoon, IL AFC Cable Systems, a part of Atkore I New Bedford, MA Allied Tube and Conduit, a part of Atkore I Harvey, IL Champion Fiberglass, Inc. Sp ring, TX FRE Composites 2005 I St. Andre-dArgenteuil, PQ, Canada Hubbell I Shelton, CT IPEX Manageme
16、nt I Mississauga, ON, Canada Legrand North Americawww.legrand.us West Hartford, CT Panduit C Tinley Park, IL Royal Building P Shelby Township, MI Southern Pipe, Inc.www.southern- New London, NC Thomas Material designation; Trade size or trade size and metric designator; Catalog number or equivalent,
17、 where practicable. Where the size of the fitting does not permit complete marking, markings shall be permitted to be omitted in the following sequence: catalog number, trade size or trade size and metric designator, and material designation. Markings shall be molded, hot-stamped, or applied to fitt
18、ings by any other suitable permanent method, such as printing. Where markings are recessed, they shall not cause cracks or reduce the wall thickness below the minimum specified in Table 1. 6.1.2 Long Elbows and Other Bends Markings on long elbows and other bends (defined as greater than 24 in. 610 m
19、m in overall axial length) and all straight lengths of conduit shall be on the product and shall comply with the permanence requirements in clauses 19.1-19.7 of UL 651A. 6.1.3 Short Elbows and Other Bends Markings on short elbows and other bends (defined as not more than 24 in. 610 mm in overall axi
20、al length) need not be on the product but shall appear on the smallest unit packaging used for the product. In the absence of any packaging, markings shall appear on a permanent adhesive label affixed to each piece. 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
