1、NEMA Standards PublicationNational Electrical Manufacturers AssociationANSI C80.5-2015Electrical Rigid Metal Conduit Aluminum (ERMC-A) ANSI C80.5-2015 American National Standard for Electrical Rigid Metal ConduitAluminum (ERMC-A) Secretariat: National Electrical Manufacturers Association Approved: D
2、ecember 14, 2015 American National Standards Institute, Inc. ANSI C80.5-2015 NOTICE AND DISCLAIMER 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
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18、 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, Inc. Published by National Electrical Manufacturers Association 1300 North 17thStreet, Suite 90
19、0 Rosslyn, Virginia 22209 2015 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 International and Pan Americ
20、an 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 ANSI C80.5-2015 Page ii 2015 National Electrical Manufacturers Associati
21、on Foreword (This foreword is not part of American National Standard C80.5-2015.) This standard was developed by the Accredited Standards Committee on Raceways for Electrical Wiring Systems, C80. The objective of the committee is to produce a comprehensive specification that would establish uniform
22、dimensions and standard construction requirements for electrical rigid steel conduit, steel electrical metallic tubing, electrical intermediate metal conduit, and electrical aluminum rigid conduit raceway products and their associated components. The standard was originally approved in 1950 and revi
23、sed in 1953, 1959, 1963, 1966, 1977, 1983, 1990, 1994, 2005, and 2015. Suggestions for improvement of this standard will be welcome. They should be sent to the National Electrical Manufacturers Association, 1300 North 17th Street, Suite 900, Rosslyn, Virginia 22209. This standard was processed and a
24、pproved 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 members voted for its approval. At the time it approved this standard, the C80 Committee comprised the
25、following members: M. J. Brett, Jr., Chair J. G. Solis, Secretary Organization Represented: Name of Representative: Western Tube 0.015 in. (0.38 mm) for trade sizes 1 (27) and smaller ANSI C80.5-2015 Page 7 2015 National Electrical Manufacturers Association Table 4 Dimensions of 90-degree elbows and
26、 weights of nipples per hundred English Units SI (Metric) Units Trade size Elbows Nipples Metric designator Elbows Nipples Minimum radius to center of conduit (in.) Minimum straight length lsat each end (in.) A lb per in. B lb per 100 Minimum radius to center of conduit (mm) Minimum straight length
27、lsat each end (mm) A kg per 100mm B kg per 100 1/2 4 1-1/2 0.023 1.04 16 102 38 0.0401 0.47 3/4 4-1/2 1-1/2 0.030 1.39 21 114 38 0.0531 0.63 1 5-3/4 1-7/8 0.043 3.12 27 146 48 0.0772 1.41 1-1/4 7-1/4 2 0.057 3.46 35 184 51 0.1013 1.57 1-1/2 8-1/4 2 0.070 3.81 41 210 51 0.1248 1.72 2 9-1/2 2 0.093 4.
28、85 53 241 51 0.1662 2.20 2-1/2 10-1/2 3 0.149 20.78 63 267 76 0.2657 9.42 3 13 3-1/8 0.194 24.24 78 330 79 0.3466 10.98 3-1/2 15 3-1/4 0.230 31.17 91 381 83 0.4096 14.12 4 16 3-3/8 0.272 39.82 103 406 86 0.4856 18.05 5 24 3-5/8 0.367 58.87 129 610 92 0.6430 26.68 6 30 3-3/4 0.488 69.26 155 762 95 0.
29、8712 31.39 NOTEEach lot of 100 nipples shall weigh not less than the number of pounds (kilograms) determined by the formula W = 100 * (LA) B, where W is the weight of 100 nipples in pounds (kilograms), L is the length of one nipple in inches (millimeters), A is the weight of nipple per inch (25.4 mm
30、) in pounds (kilograms), and B is the weight in pounds (kilograms) lost in threading 100 nipples. 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
