1、NEMA Standards PublicationNational Electrical Manufacturers AssociationNEMA RN 2-1997 (R2009)Packaging of Master Bundles for Electrical Rigid Metal Conduit (ERMC) Steel, Electrical Intermediate Metal Conduit (EIMC) Steel, and Electrical Metallic Tubing (EMT) SteelNEMA Standards Publication No. RN 2-
2、1997 (R 2009) Packaging of Master Bundles for Electrical Rigid Metal Conduit (ERMC) Steel, Electrical Intermediate Metal Conduit (EIMC) Steel, and Electrical Metallic Tubing (EMT) Steel Published by: National Electrical Manufacturers Association 1300 North 17th Street, Suite 1752 Rosslyn, VA 22209 .
3、 Copyright 2001 by the National Electrical Manufacturers Association. All rights 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 American Copyright Con
4、ventions. TABLE OF CONTENTS Page FOREWORD i SCOPE . ii Section 1 SIZE OF MASTER BUNDLE - 10 FOOT LENGTHS 1.1 Number of Pieces 1 1.1.1 Electrical Rigid Metal Conduit (ERMC) - Steel 1 1.1.2 Electrical Immediate Metal Conduit (EIMC) - Steel . 1 1.1.3 Electrical Metallic Tubing (EMT) - Steel 1 Section 2
5、 SIZE OF MASTER BUNDLE - 20 FOOT LENGTHS 2.1 Number of Pieces. 4 2.1.1 Electrical Rigid Metal Conduit (ERMC) - Steel 4 2.1.2 Electrical Metallic Tubing (EMT) - Steel 4 Section 3 CONSTRUCTION OF BUNDLES 3.1 Construction of Bundles . 6 List of Tables Table 1-1 Electrical Rigid Metal Conduit (ERMC) - S
6、teel Master Bundle Quantity - 10 Foot (3.05 m) Lengths 1 Table 1-2 Electrical Intermediate Metal Conduit (EIMC) - Steel Master Bundle Quantity - 10 Foot (3.05 m) Lengths 2 Table 1-3 Electrical Metallic Tubing (EMT) -Steel Master Bundle Quantity - 20 Foot (6.10 m) Lengths 3 Table 2-1 Electrical Rigid
7、 Metal Conduit (ERMC) - Steel Master Bundle Quantity - 20 Foot (6.10 m) Lengths 4 Table 2-2 Electrical Metallic Tubing (EMT) -Steel Master Bundle Quantity - 20 Foot (6.10 m) Lengths 5 FOREWORD This Standards Publication is intended to recommend sizes for master bundles of steel electrical conduit in
8、 order to provide a safe, manageable package for bulk handling of the product, and to facilitate tracking of the number of pieces being handled by the distributor or others dispensing and storing the product. The sizes listed provide for nominal bundle weights of 2,000 lbs. except in the larger diam
9、eter sizes of EIMC and EMT, where the weight per unit volume of the product dictates a lesser number of pieces (and weight) in order to maintain practical bundle dimensions. The 2,000 lb. nominal bundle weight is intended to be consistent with the equipment commonly available for handling the produc
10、t. However, it is the responsibility of those handling the product to determine the compatibility of their handling equipment with master bundles as specified in this document. In the preparation of this standards publication, the input of users and other interested parties has been sought and evalu
11、ated. Inquiries, comments, and proposed or recommended revisions should be submitted to the concerned NEMA product subdivision by contacting the: Manager, Engineering Department National Electrical Manufacturers Association 1300 North 17thStreet, Suite 1752 Rosslyn, VA 22209 i SCOPE This Standards P
12、ublication covers recommendations for the size and banding of master bundles of Electrical Rigid Metal Conduit (ERMC) - Steel, Electrical Intermediate Metal Conduit (EIMC) - Steel, and Electrical Metallic Tubing (EMT) - Steel, in 10 foot (3.05 m) lengths and the size and banding of master bundles of
13、 Electrical Rigid Metal Conduit (ERMC) - Steel and Electrical Metallic Tubing (EMT) - Steel, in 20 foot (6.10 m) lengths. ii RN 2-1997 (R 2009) Page 1 PACKAGING OF MASTER BUNDLES FOR ELECTRICAL RIGID METAL CONDUIT (ERMC) - STEEL, ELECTRICAL INTERMEDIATE METAL CONDUIT (EIMC) - STEEL, AND ELECTRICAL M
14、ETALLIC TUBING (EMT) - STEEL Section 1 SIZE OF MASTER BUNDLE FOR 10 FOOT LENGTHS 1.1 NUMBER OF PIECES 1.1.1 Electrical Rigid Metal Conduit (ERMC) - Steel The recommended number of pieces of Electrical Rigid Metal Conduit in 10 foot (3.05 m) lengths in a master bundle of each trade size, (16) through
15、 6 (155), is shown in Table 1-1. 1.1.2 Electrical Intermediate Metal Conduit (EIMC) - Steel The recommended number of pieces of Electrical Intermediate Metal Conduit in 10 foot (3.05 m) lengths in a master bundle of each trade size, 1/2 (16) through 4 (103), is shown Table 1-2. 1.1.3 Electrical Meta
16、llic Tubing (EMT) - Steel The recommended number of pieces of Electrical Metallic Tubing Steel in 10 foot (3.05) lengths in a master bundle of each trade size, (16) through 4 (103), is shown in Table 1-3. Authorized Engineering Information 7-22-1987 Table 1-1 ELECTRICAL RIGID STEEL CONDUIT - STEEL M
17、ASTER BUNDLE QUANTITY - 10 FOOT (3.05 m) LENGTHS Trade Size Metric Designator Pieces Feet Meter Nominal Wt/Lbs Wt/kg 1/2 16 250 2500 762.0 2060 934.4 3/4 21 200 2000 609.6 2170 984.3 1 27 125 1250 381.0 2010 911.7 1 1/4 35 90 900 274.3 1960 889.0 1 1/2 41 80 800 243.8 2100 952.5 2 53 60 600 182.9 21
18、00 952.5 2 1/2 63 37 370 112.8 2070 938.9 3 78 30 300 91.4 2180 988.8 3 1/2 91 25 250 76.2 2200 997.9 4 103 20 200 61.0 2060 934.4 5 129 15 150 45.7 2100 952.5 6 155 10 100 30.5 1840 834.6 Nominal weight of bundies are based on nominal conduit dimensions as specified in UL 6, UL/CSA/ANCE Electrical
19、Rigid Metal Conduit - Steel, November 30, 2007*. Authorized Engineering Information 7-22-1987 *Available from Underwriters Laboratories, Inc., 333 Pfingsten Road, Northbrook, Illinois 60062. RN 2-1997 (R 2009) Page 2 Table 1-2 ELECTRICAL INTERMEDIATE METAL CONDUIT - STEEL MASTER BUNDLE QUANTITY - 10
20、 FOOT (3.05 m) LENGTHS Trade Size Metric Designator Pieces Feet Meter Nominal Wt/Lbs Wt/kg 1/2 16 350 3500 1066.8 2170 984.3 3/4 21 250 2500 762.0 2110 957.1 1 27 170 1700 518.2 2030 920.8 1 1/4 35 135 1350 411.5 2130 966.1 1 1/2 41 110 1100 335.3 2130 966.1 2 53 80 800 243.8 2050 929.9 2 1/2 63 37
21、370 112.8 1630 739.4 3 78 30 300 91.4 1630 739.4 3 1/2 91 24 240 73.2 1510 684.9 4 103 24 240 73.2 1680 762.0 Nominal weights of bundles are based on nominal conduit dimensions as specified in UL 1242, Standard for Electrical Intermediate Metal Conduit - Steel, February 16, 2006*. Authorized Enginee
22、ring Information 7-22-1987 *Available from Underwriters Laboratories, Inc., 333 Pfingsten Road, Northbrook, Illinois 60062. RN 2-1997 (R 2009) Page 3 Table 1-3 ELECTRICAL METALLIC TUBING - STEEL MASTER BUNDLE QUANTITY - 10 FOOT (3.05 m) LENGTHS Trade Size Metric Designator Pieces Feet Meter Nominal
23、Wt/Lbs Wt/kg 1/2 16 700 7000 2133.6 2090 948.0 3/4 21 500 5000 1524 2288 1037.8 1 27 300 3000 914.4 2020 916.3 1 1/4 35 200 2000 609.6 2010 911.7 1 1/2 41 150 1500 457.2 1740 789.2 2 53 120 1200 365.8 1780 807.4 2 1/2 63 61 610 185.9 1320 598.7 3 78 51 510 155.4 1340 607.8 3 1/2 91 37 370 112.8 1290
24、 585.1 4 103 30 300 91.4 1180 535.2 Nominal weights of bundles are based on nominal conduit dimensions as specified in UL/CSA/ANCE 797, Standard for Electrical Metallic Tubing - Steel, November 30, 2007*. Authorized Engineering Information 7-22-1987 *Available from Underwriters Laboratories, Inc., 3
25、33 Pfingsten Road, Northbrook, Illinois 60062. RN 2-1997 (R 2009) Page 4 PACKAGING OF MASTER BUNDLES FOR ELECTRICAL RIGID METAL CONDUIT (ERMC) - STEEL AND ELECTRICAL METALLIC TUBING (EMT) - STEEL Section 2 SIZE OF MASTER BUNDLE FOR 20 FOOT LENGTHS 2.1 NUMBER OF PIECES 2.1.1 Electrical Rigid Metal Co
26、nduit (ERMC) - Steel The recommended number of pieces of Electrical Rigid Metal Conduit in 20 foot (6.10 m) lengths in a master bundle of each trade size, 2 (53) through 6 (155), is shown in Table 2-1. 2.1.2 Electrical Metallic Tubing (EMT) - Steel The recommended number of pieces of Electrical Meta
27、llic Tubing Steel in 20 foot (6.10 m) lengths in a master bundle of each trade size, (16) through 4 (103), is shown in Table 2-2. Authorized Engineering Information 7-22-1987 Table 2-1 ELECTRICAL RIGID STEEL CONDUIT - STEEL MASTER BUNDLE QUANTITY - 20 FOOT (6.10 m) LENGTHS Trade Size Metric Designat
28、or Pieces Feet Meter Nominal Wt/Lbs Wt/kg 2 53 30 600 182.9 2100 952.5 2 1/2 63 18 360 109.7 2014 913.6 3 78 15 300 91.4 2180 988.8 3 1/2 91 12 240 73.2 2112 958.0 4 103 10 200 61.0 2060 934.4 5 129 7 140 42.7 1960 889.0 6 155 5 100 30.5 1840 834.6 Nominal weight of bundies are based on nominal cond
29、uit dimensions as specified in UL 6, UL/CSA/ANCE Electrical Rigid Metal Conduit - Steel, November 30, 2007*. Authorized Engineering Information 7-22-1987 *Available from Underwriters Laboratories, Inc., 333 Pfingsten Road, Northbrook, Illinois 60062. RN 2-1997 (R 2009) Page 5 Table 2-2 ELECTRICAL ME
30、TALLIC TUBING - STEEL MASTER BUNDLE QUANTITY - 20 FOOT (6.10 m) LENGTHS Trade Size Metric Designator Pieces Feet Meter Nominal Wt/Lbs Wt/kg 1/2 16 175 3500 1066.8 1045 474.0 3/4 21 125 2500 762.0 1144 518.9 1 27 75 1500 457.2 1010 458.1 1 1/4 35 50 1000 304.8 1005 455.9 1 1/2 41 37 740 225.6 858 389
31、.4 2 53 37 740 225.6 1098 497.9 2 1/2 63 19 380 115.8 822 373.0 3 78 19 380 115.8 998 452.9 3 1/2 91 19 380 115.8 1325 600.9 4 103 10 200 61.0 787 356.8 Nominal weights of bundles are based on nominal conduit dimensions as specified in UL/CSA/ANCE 797, Standard for Electrical Metallic Tubing - Steel
32、, November 30, 2007*. Authorized Engineering Information 7-22-1987 *Available from Underwriters Laboratories, Inc., 333 Pfingsten Road, Northbrook, Illinois 60062. RN 2-1997 (R 2009) Page 6 Section 3 CONSTRUCTION OF BUNDLES 3.1 CONSTRUCTION OF BUNDLES Master bundles should be secured with at least t
33、wo bands of steel strapping meeting the requirements of ASTM D3953-97*,Standard Specification for Strapping, Flat Steel and Seals, American Society for Testing and Materials. Authorized Engineering Information 7-22-1987 *Available from the ASTM International 100 Bar Harbor Drive, West Conshohocken,
34、PA 19428 NEMA STANDARDIZATION The purpose of NEMA Standards, their classification and status, are set forth in certain clauses of the NEMA Stan-dardization Policies and Procedures manual and are referenced below. Purpose of Standards National Electrical Manufacturers Association Standards are adopte
35、d in the public interest and are designed to eliminate misunderstandings between the manufacturer and the purchaser and to assist the purchaser in selecting and obtaining the proper product for its particular need. Existence of a National Electrical Manufacturers Association Standard does not in any
36、 respect preclude any member or nonmember from manufacturing or selling products not conforming to the standard. (Standardization Policies and Procedures, p. 1) Definition of a Standard A standard of the National Electrical Manufacturers Association defines a product, process, or procedure with refe
37、rence to one or more of the following: nomenclature, composition, construction, dimensions, tolerances, safety, operating characteristics, performance, rating, testing, and the service for which they are designed. (Standardization Policies and Procedures, p. 2) Dimensions Where dimensions are given
38、for interchangeability purposes, alternate dimensions satisfying the other provisions of the standards publication may be capable of otherwise equivalent performance. (Standardization Policies and Procedures, p. 9) Classes of Standards National Electrical Manufacturers Association Standards are of t
39、wo classes: 1. NEMA Standard, which relates to a product commercially standardized and subject to repetitive manufacture, which standard has been approved by at least 90percent of the members of the Subdivision eligible to vote thereon; 2. Suggested Standard for Future Design, which may not have bee
40、n regularly applied to a commercial product, but which suggests a sound engineering approach to future development, which standard has been approved by at least two-thirds of the members of the Subdivision eligible to vote thereon. (Standardization Policies and Procedures, pp. 8 & 17) Authorized Eng
41、ineering Information Authorized Engineering information consists of explanatory data and other engineering information of an informative character not falling within the classification of NEMA Standard or Suggested Standard for Future Design, which standard has been approved by at least two-thirds o
42、f the members of the Subdivision eligible to vote on the standard. (Standardization Policies and Procedures, pp. 8 & 17) Official Standards Proposal An Official Standards Proposal is an official draft of a proposed standard which is formally recommended to an outside organization(s) for consideratio
43、n, comment, and/or approval, and which has been approved by at least 90percent of the members of the Subdivision eligible to vote thereon. (Standardization Policies und Procedures, pp. 8 & 17) Identification of Status Standards in NEMA Standards Publications are identified in the foreword or followi
44、ng each standard as “NEMA Standard” or “Suggested Standard for Future Design.” These indicate the status of the standard. These words are followed by a date which indicates when the standard was adopted in its present form by the Association. The material identified as “Authorized Engineering Inform
45、ation” and “Official Standards Proposal” is designated similarly. STEEL RIGID CONDUIT AND ELECTRICAL METALLIC TUBING SECTION OF THE NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION MEMBER COMPANIES Allied Tube & Conduit Corporation Harvey, IL 60426 Picoma Industries, Inc Waynesboro, PA 17268 Republic C
46、onduit Maverick Tube Corporation Chesterfield, MO 63017 Robroy Industries, Inc. Verona, PA 15147 Thomas & Betts Corporation Memphis, TN 38125 Western Tube & Conduit Corporation Long Beach, CA 90810 Wheatland Tube Company Wheatland, PA 16161 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
