1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 2024 Cable Routing Assemblies and Communications RacewaysUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT
2、 AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Cable Routing Assemblies and Communications Raceways, UL 2024 Fifth Edition, Dated March 25, 2014 SUMMARY OF TOPICS This revision of ANSI/UL 2024 was issued to incorporate the following changes
3、: Clarication that the UL 723 test of Section 11A is an alternate method for qualifying plenum rated communications raceways to Section 11 of NFPA 262 The new and revised requirements are substantially in accordance with Proposal(s) on this subject dated June 12, 2015. Text that has been changed in
4、any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. Changes in requirements are marked with a vertical line in the margin and are followed by an effective date note indicating the date of publication or the date on which the changed requirement be
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9、oring an electronic Standard on the purchasers computer system. The requirements in this Standard are now in effect, except for those paragraphs, sections, tables, gures, and/or other elements of the Standard having future effective dates as indicated in the note following the affected item. The pri
10、or text for requirements that have been revised and that have a future effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. The following table lists the future effective dates with the corresponding reference. AUGUST 5, 2015 UL 2024 tr1UL COPYRIGHTED
11、MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Future Effective Date Reference January 9, 2016 Paragraphs 1.1, 2.4, 9.1, 10.1, 11.1.1, 11.1.3; 11.3.1, 11.3.2, 11.3.4, 12.3.1, 12.3.2, 12.3.3, 12.5.1, 13.1.1, 13.1.3, 13.3.1, 13.5.2, 13.6.1, 14.1, 14.2, 15.1
12、, 15.2, 16.2.1, 16.3.1, A1.1, and A1.2; Sections 11A, 11.2; 11.4, 11.5, 12.1, 12.2, 12.4, 13.2, and 13.4; Table 9.1 AUGUST 5, 2015 UL 2024 tr2UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MARCH 25, 2014 (Title Page Reprinted: August 5, 201
13、5) 1 UL 2024 Standard for Cable Routing Assemblies and Communications Raceways First Edition December, 1995 Second Edition November, 2002 Third Edition September, 2004 Fourth Edition March, 2011 Fifth Edition March 25, 2014 This ANSI/UL Standard for Safety consists of the Fifth Edition including rev
14、isions through August 5, 2015. The most recent designation of ANSI/UL 2024 as an American National Standard (ANSI) occurred on August 3, 2015. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page, or effective date information. Comments or proposals for revisio
15、ns on any part of the Standard may be submitted to UL at any time. Proposals should be submitted via a Proposal Request in ULs On-Line Collaborative Standards Development System (CSDS) at http:/. ULs Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy of a Standard shou
16、ld be altered in any way. All of ULs Standards and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2015 UNDERWRITERS LABORATORIES INC. ANSI/UL 2024-2015UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DI
17、STRIBUTION WITHOUT PERMISSION FROM UL JANUARY 9, 2015 CABLE ROUTING ASSEMBLIES AND COMMUNICATIONS RACEWAYS - UL 2024 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .5 2 Glossary .5 3 Units
18、 of Measurement .6 4 References .6 CONSTRUCTION 5 General 6 6 Raceway System .6 7 Raceway and Fitting Covers 7 8 Fittings 7 PERFORMANCE 9 General 8 10 Identication of Materials .9 11 Test for Flame Propagation and Smoke Density Values of Communications Raceways (Plenum) 9 11.1 General 9 11.2 Apparat
19、us 9 11.3 Test specimens 10 11.4 Calibration of test equipment 11 11.5 Test procedure .11 11.6 Report 11 11A Test for Flame Propagation and Smoke Density Values of Cable Routing Assemblies and Communications Raceways (Plenum) 11 11A.1 General 11 11A.2 Report .12 12 Test for Flame Propagation of Cabl
20、e Routing Assemblies and Communications Raceways (Riser) .12 12.1 General .12 12.2 Apparatus .13 12.3 Test specimens 13 12.4 Test procedure .14 12.5 Report 14 13 Vertical-Tray Flame Test for Cable Routing Assemblies and Communications Raceways (General Use) 14 13.1 General .14 13.2 Apparatus .15 13.
21、3 Test specimens 15 13.4 Test procedure .15 13.5 Report 15 13.6 Communications raceway ttings .16 14 Heat Shock Test 16 15 Cold Bend Test .16 JANUARY 9, 2015 CABLE ROUTING ASSEMBLIES AND COMMUNICATIONS RACEWAYS - UL 2024 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTIO
22、N WITHOUT PERMISSION FROM UL MARKINGS 16 Details .17 16.1 Manufacturer 17 16.2 Surface marking 17 16.3 Carton, reel or tag marking 18 APPENDIX A GUIDE TO MOUNTING METHODS A1 Introduction A1 A2 Method A1 JANUARY 9, 2015 CABLE ROUTING ASSEMBLIES AND COMMUNICATIONS RACEWAYS - UL 2024 4UL COPYRIGHTED MA
23、TERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover cable routing assemblies and ttings and communications raceways and ttings in accordance with the NFPA 70, National Electrical Code, NFPA 76, Standard for the F
24、ire Protection of Telecommunications Facilities, and NFPA 90A, Standard for the Installation of Air-Conditioning and Ventilating Systems: a) Plenum Evaluated for installation in other spaces used for environmental air in accordance with the National Electrical Code, ceiling cavity plenums and raised
25、 oor plenums in accordance with NFPA 76 and NFPA 90A as well as riser and general purpose applications. b) Riser Evaluated for installation in risers in accordance with the National Electrical Code and NFPA 76 as well as general purpose applications. c) General Use Evaluated for general purpose appl
26、ications only in accordance with the National Electrical Code and NFPA 76 Revised 1.1 effective January 9, 2016 2 Glossary 2.1 For the purpose of this Standard the following denitions apply: 2.2 CABLE ROUTING ASSEMBLY A single channel or connected multiple channels, as well as associated ttings, for
27、ming a structural system that is used to support and route communications wires and cables, optical ber cables, data cables associated with information technology and communications equipment, Class 2 and Class 3 cables and power-limited re alarm cables. Note: Reprinted with permission from NFPA 70-
28、2014 , National Electrical Code , Copyright 2013, National Fire Protection Association, Quincy, MA. This reprinted material is not the complete and official position of the NFPA on the referenced subject, which is represented only by the standard in its entirety. NFPA 70 , National Electrical Code a
29、nd NEC are registered trademarks of the National Fire Protection Association, Quincy, MA. 2.2 revised March 25, 2014 2.3 COMMUNICATIONS RACEWAY An enclosed channel of nonmetallic materials designed expressly for holding communications wires and cables, typically communications wires and cables, and
30、optical ber and data (Class 2 and Class 3), in plenum, riser and general-purpose applications. Note: Reprinted with permission from NFPA 70-2014 , National Electrical Code , Copyright 2013, National Fire Protection Association, Quincy, MA. This reprinted material is not the complete and official pos
31、ition of the NFPA on the referenced subject, which is represented only by the standard in its entirety. 2.3 revised March 25, 2014 JANUARY 9, 2015 CABLE ROUTING ASSEMBLIES AND COMMUNICATIONS RACEWAYS - UL 2024 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT P
32、ERMISSION FROM UL 2.4 RACEWAY An enclosed channel of metallic or nonmetallic materials designed expressly for holding wires, cables, or busbars, with additional functions as permitted in the National Electrical Code. Note: Reprinted with permission from NFPA 70-2014 , National Electrical Code , Copy
33、right 2013, National Fire Protection Association, Quincy, MA. This reprinted material is not the complete and official position of the NFPA on the referenced subject, which is represented only by the standard in its entirety. NFPA 70 , National Electrical Code and NEC are registered trademarks of th
34、e National Fire Protection Association, Quincy, MA. Revised 2.4 effective January 9, 2016 3 Units of Measurement 3.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information. 4 References 4.1 Any undated reference to a code or standard a
35、ppearing in the requirements of this standard shall be interpreted as referring to the latest edition of that code or standard. CONSTRUCTION 5 General 5.1 The interior surfaces of signaling optical ber raceways and communications raceways and cable routing assemblies shall be free from burrs and sha
36、rp edges that can damage cables. Compliance is to be determined by visual examination of the interior surfaces. 5.2 The distinguishing feature between raceways and cable routing assemblies is that raceways are enclosed and cable routing assemblies may or may not include enclosed sections. See 6.1. 6
37、 Raceway System 6.1 A raceway system shall enclose the cables installed therein and, when installed as intended, shall comply with the following: a) There shall not be any openings that permit the probe illustrated in Figure 6.1 to be inserted for a distance greater than 1/8 inch (3.2 mm), and b) Th
38、e total area of openings shall not exceed 15 percent of the area of the surface in which the openings are located. This is generated text for gtxt. JANUARY 9, 2015 CABLE ROUTING ASSEMBLIES AND COMMUNICATIONS RACEWAYS - UL 2024 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTR
39、IBUTION WITHOUT PERMISSION FROM UL 7 Raceway and Fitting Covers 7.1 A two-piece raceway or tting shall have provisions for securing the cover to the base. A raceway cover shall be securely held in place by continuous grooves, anges, or similar construction at intervals not exceeding 4 feet (1.2 m).
40、8 Fittings 8.1 Signaling raceway, optical ber raceway and communications raceway ttings are investigated in combination with a specic raceway system. They are not intended to be interchangeable with other conduit or raceway systems as the raceways may differ in their inside and outside diameters. 8.
41、2 Cable routing assembly ttings shall be evaluated in combination with a specic cable routing assembly system. They are not intended to be interchangeable with other conduit or cable routing assembly systems since the dimensions of the cable routing assemblies may differ. Figure 6.1 Accessibility Pr
42、obe MARCH 25, 2014 CABLE ROUTING ASSEMBLIES AND COMMUNICATIONS RACEWAYS - UL 2024 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL PERFORMANCE 9 General 9.1 Communications raceways and ttings, and cable routing assemblies and ttings are to b
43、e subjected to the tests summarized in Table 9.1. Exception: Cable routing assembly ttings and communications raceway ttings molded of the same material that has previously been subjected to the appropriate ame test in a length of cable routing assembly or communications raceway need not be subjecte
44、d to a ame test. Revised 9.1 effective January 9, 2016 Table 9.1 Test programs for cable routing assemblies and communications raceways Revised Table 9.1 effective January 9, 2016 Construction Test Section Rigid Cable Routing Assemblies and Communications Raceways Identication of Materials 10 Rigid
45、Cable Routing Assemblies Plenum, Riser or General Use Flame 11A, 12, 13 Rigid Communications Raceways Plenum, Riser or General Use Flame 11 or 11A, 12, 13 Pliable Communications Raceways a Identication of Materials 10 Plenum, Riser or General Use Flame 11 or 11A, 12, 13 Heat Shock 14 Cold Bend 15 Pl
46、iable Cable Routing Assemblies Identication of Materials 10 Plenum, Riser or General Use Flame 11A, 12, 13 Raceway and Cable Routing Assembly Fittings Identication of Materials 10 Plenum, Riser or General Use Flame 11A, 12, 13 a A pliable raceway or cable routing assembly is a raceway or cable routi
47、ng assembly that is intended to be bent by hand without the use of a tool. JANUARY 9, 2015 CABLE ROUTING ASSEMBLIES AND COMMUNICATIONS RACEWAYS - UL 2024 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 10 Identication of Materials 10.1 The
48、specic gravity and infrared spectrum of the materials used in the cable routing assemblies, communications raceways, and ttings shall be determined in accordance with the methods described in the Standard for Polymeric Materials Short Term Property Evaluations, UL 746A. Revised 10.1 effective Januar
49、y 9, 2016 11 Test for Flame Propagation and Smoke Density Values of Communications Raceways (Plenum) 11.1 General 11.1.1 This is a re test for determining values of ame-propagation distance and optical smoke density for communications raceways that are to be installed in other spaces used to transport environmental air, ceiling cavity plenums and raised oor plenums. The test shall be conducted in accordance with NFPA 262, Standard Method of Test for
