1、 ANSI C80.5-2005 American National Standard for Electrical Rigid Aluminum Conduit (ERAC) Copyright National Electrical Manufacturers Association Provided by IHS under license with NEMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Copyright National Electrical Man
2、ufacturers Association Provided by IHS under license with NEMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ANSI C80.5-2005 Revision of ANSI C80.5-1994 American National Standard For Electrical Rigid Aluminum Conduit (ERAC) Secretariat: National Electrical Manufa
3、cturers Association Approved August 18, 2005 American National Standards Institute, Inc. Copyright National Electrical Manufacturers Association Provided by IHS under license with NEMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ANSI C80.5-2005 NOTICE AND DISCLA
4、IMER The information in this publication was considered technically sound by the consensus of persons engaged in the development and approval 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 de
5、velopment of this document. NEMA standards and guideline publications, of which the document 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 t
6、opic covered by this publication. While NEMA administers the process and establishes rules 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 a
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12、compliance with the contents of this document. NEMA does not certify, test, or inspect 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
13、 and is solely the responsibility of the certifier or maker of the statement. Copyright National Electrical Manufacturers Association Provided by IHS under license with NEMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ANSI C80.5-2005 i AMERICAN NATIONAL STANDARD
14、 Approval of an American National Standard requires verification by ANSI that the requirements for due process, consensus, and other criteria for approval have been met by the standards developer. Consensus is established when, in the judgment of the ANSI Board of Standards Review, substantial agree
15、ment has been reached by directly and materially affected interests. Substantial agreement means much more than a simple majority, but not necessarily unanimity. Consensus requires that all views and objections be considered, and that a concerted effort be made toward their resolution. The use of Am
16、erican National Standards is completely voluntary; their existence does not in any respect preclude anyone, whether he has approved the standards or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standards. The American National Stan
17、dards Institute does not develop standards and will in no circumstances give an interpretation of any American National Standard. Moreover, no person shall have the right or authority to issue an interpretation of an American National Standard in the name of the American National Standards Institute
18、. Requests for interpretations should be addressed to the secretariat or sponsor whose name appears on the title page of this standard. Caution Notice: This American National Standard may be revised or withdrawn at any time. The procedures of the American National Standards Institute require that ac
19、tion be taken periodically to reaffirm, revise, or withdraw this standard. Purchasers of American National Standards may receive current information on all standards by calling or writing the American National Standards Institute. Published by National Electrical Manufacturers Association 1300 North
20、 17th Street, Rosslyn, VA 22209 Copyright 2005 by National Electrical Manufacturers Association. All rights reserved including translation into other languages, reserved under the Universal Copyright Convention, the Berne Convention for the Protection of Literary and Artistic Works, and the Internat
21、ional and Pan American Copyright Conventions. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher. Printed in the United States of America Copyright National Electrical Manufacturers Associat
22、ion Provided by IHS under license with NEMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ANSI C80.5-2005 ii This page intentionally left blank.Copyright National Electrical Manufacturers Association Provided by IHS under license with NEMANot for ResaleNo reproduc
23、tion or networking permitted without license from IHS-,-,-ANSI C80.5-2005 iii Contents Page Foreword . iv 1 Scope 1 2 Normative References .1 3 Definitions 1 4 Units of Measurements 2 5 General Requirements.2 5.1 Circular cross section2 5.2 Wall thickness .2 5.3 Interior surface 2 5.4 Alloy .2 6 Det
24、ailed Requirements 2 6.1 Threading and chamfering2 6.2 Identification2 6.3 Dimensions .2 6.4 Threads.2 6.5 Couplings 3 6.6 Elbows and nipples .3 7 Ductility Test .3 8 Examination of Product3 8.1 Place of inspection3 8.2 Visual inspection .3 8.3 Retests .3 9 Marking 4 9.1 Product marking4 9.2 Nipples
25、 .4 Tables 1 Dimensions of threads for rigid aluminum conduit.4 2 Dimensions and weights for rigid aluminum conduit .5 3 Dimensions of couplings6 4 Dimensions of 90-degree elbows and weights of nipples per hundred.7 Copyright National Electrical Manufacturers Association Provided by IHS under licens
26、e with NEMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ANSI C80.5-2005 iv Foreword (This Foreword is not part of American National Standard C80.5-2005.) This standard was developed by the Accredited Standards Committee on Raceways for Electrical Wiring Systems,
27、 C80. The objective of the committee is to produce a comprehensive specification that would establish uniform dimensions and standard construction requirements for Electrical Rigid Steel Conduit, Steel Electrical Metallic Tubing, Electrical Intermediate Metal Conduit and Electrical Aluminum Rigid Co
28、nduit raceway products and their associated components. The standard was originally approved in 1950 and revised in 1953, 1959, 1963, 1966, 1977, 1983, 1990, 1994 and 2005. Suggestions for improvement of this standard will be welcome. They should be sent to: National Electrical Manufacturers Associa
29、tion 1300 North 17th Street, Suite 1847 Rosslyn, Virginia 22209 This standard was processed and approved for submittal to ANSI by the Accredited Standards Committee on Raceways for Electrical Wiring Systems, C80. Committee approval of the standard does not necessarily imply that all committee member
30、s voted for its approval. At the time it approved this standard, the C80 Committee had the following members: J. A. Gruber, Chairman J. P.Collins, Jr., Secretary Organization Represented: Name of Representative: Aluminum Association P. Pollak American National Standards Institute H. Benko American I
31、ron and Steel Institute J. A. Gruber American Iron and Steel Institute M. J. Brett, Jr. American Iron and Steel Institute J. Robbins American Pipe Fittings Association D. Thompson International Association of Electrical Inspectors W. Lilly International Brotherhood of Electrical Workers H. Hickman N
32、ational Electrical Contractors Association B. Stauffer National Electrical Manufacturers Association A. W. Ballard National Electrical Manufacturers Association S. Blais National Electrical Manufacturers Association T. McNeive National Electrical Manufacturers Association E. Thompson National Electr
33、ical Manufacturers Association J. Dodds Steel Tube Institute K. Carroll Steel Tube Institute G. Scartozzi Underwriters Laboratories, Inc G. Walbrecht Unaffiliated D. Gearing Unaffiliated R. Loyd Unaffiliated H. E. Harper, Jr. Copyright National Electrical Manufacturers Association Provided by IHS un
34、der license with NEMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1 For Electrical Rigid Aluminum Conduit (ERAC) 1 Scope This standard covers the requirements for porthole-extruded aluminum-alloy conduit for use as a raceway for the wires or cables of an electri
35、cal system. The finished conduit is produced in nominal 10 ft. (3.05 m) lengths, threaded on each end with one coupling attached. This standard also covers aluminum conduit couplings, elbows, nipples and conduit lengths other than 10 ft (3.05 m). Properly assembled systems of conduit, couplings, elb
36、ows and nipples manufactured in accordance with this standard, and other identified fittings, provide for the electrical continuity required of an equipment grounding conductor. 2 Normative References The following standard contains provisions which, through reference in this text, constitute requir
37、ements of this American National Standard. All standards are subject to revision, and parties to agreements based on this American National Standard are encouraged to investigate the possibility of applying the most recent edition of the standard indicated below. ANSI/ASME B1.20.1, Pipe Threads, Gen
38、eral Purpose (Inch) UL 6A, Electrical Rigid Metal Conduit Aluminum, Red Brass and Stainless Steel 3 Definitions 3.1 electrical rigid aluminum conduit (ERAC): A threadable aluminum raceway of circular cross-section designed for the physical protection and routing of wire conductors and cables and for
39、 use as an equipment grounding conductor. 3.2 threaded coupling: An internally threaded aluminum cylinder for joining together the components of an ERAC system. 3.3 elbow: A manufactured curved section of ERAC threaded on each end. 3.4 nipple: A straight length of ERAC not more than 2 ft (0.61 m) lo
40、ng and threaded on each end. 3.5 straight conduit: A straight length of ERAC without a coupling. 3.6 finished conduit: A straight length of ERAC with one coupling attached. AMERICAN NATIONAL STANDARD ANSI C80.5-2005Copyright National Electrical Manufacturers Association Provided by IHS under license
41、 with NEMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ANSI C80.5-2005 2 4 Units of Measurements The values stated in inch-pound units are to be regarded as the standard. The metric dimensions are exact conversions for safety considerations. 5 General Requiremen
42、ts 5.1 Circular cross section Electrical rigid aluminum conduit shall have a circular cross section sufficiently accurate to permit the cutting of threads in accordance with Table 1. 5.2 Wall thickness The wall thickness shall be uniform throughout. 5.3 Interior surface The interior surface shall be
43、 free from injurious defects. 5.4 Alloy The conduit shall be made of an aluminum alloy containing not more than 0.40% copper. 6 Detailed Requirements 6.1 Threading and chamfering Each length of conduit, nipple and elbow shall be threaded on both ends, and each end shall be chamfered or otherwise tre
44、ated to remove burrs and sharp edges. Threads shall comply with the requirements of 6.4. 6.2 Identification Each length of conduit, nipple, and elbow shall be identified in accordance with 9. 6.3 Dimensions The dimensions and weights of ERAC shall be in accordance with Table 2. 6.4 Threads The numbe
45、r of threads per inch (threads per 25.4 mm), and the length of the threaded portion at each end of each length of conduit, nipple and elbow shall be as indicated in Table 1, and shall conform to American National Standard for Pipe Threads, General Purpose (Inch), ANSI/ASME B1.20.1. The perfect threa
46、d shall be tapered for its entire length, and the taper shall be 1 in 16. Copyright National Electrical Manufacturers Association Provided by IHS under license with NEMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ANSI C80.5-2005 3 6.5 Couplings Couplings shall
47、comply with the following requirements: 6.5.1 The coupling shall be made of an aluminum alloy containing not more than 0.40% copper. 6.5.2 Couplings shall be so made that all threads on the conduit will be covered when the coupling is made up “wrench tight” on conduit threads that meet the requireme
48、nts of 6.4. 6.5.3 Both ends of the couplings shall be chamfered to prevent damage to the starting thread. 6.5.4 The outside diameter and length of couplings shall be as indicated in Table 3. 6.5.5 Couplings shall be straight tapped. 6.6 Elbows and nipples Conduit elbows and nipples shall be made of
49、the same grade of aluminum as that employed in straight lengths of electrical rigid aluminum conduit, and shall be threaded and marked for identification according to the applicable requirements for electrical rigid aluminum conduit. The dimensions of 90-degree elbows and the weights of nipples shall be as indicated in Table 4. 7 Ductility Test Conduit
