1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 5C Surface Raceways and Fittings for Use with Data, Signal, and Control Circuits STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PE
2、RMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Surface Raceways and Fittings for Use with Data, Signal, and Control Circuits, UL 5C Third Edition, Dated April 22, 2016 Summary of Topics This new ed
3、ition of ANSI/UL 5C includes the following changes in requirements: Revision to Installation Instructions Updates to External Standards References The revision requirements are substantially in accordance with Proposal(s) on this subject dated February 26, 2016. All rights reserved. No part of this
4、publication may be reproduced, stored in a retrieval system, or transmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwise without prior permission of UL. UL provides this Standard as is without warranty of any kind, either expressed or implied, including but
5、not limited to, the implied warranties of merchantability or tness for any purpose. In no event will UL be liable for any special, incidental, consequential, indirect or similar damages, including loss of prots, lost savings, loss of data, or any other damages arising out of the use of or the inabil
6、ity to use this Standard, even if UL or an authorized UL representative has been advised of the possibility of such damage. In no event shall ULs liability for any damage ever exceed the price paid for this Standard, regardless of the form of the claim. Users of the electronic versions of ULs Standa
7、rds for Safety agree to defend, indemnify, and hold UL harmless from and against any loss, expense, liability, damage, claim, or judgment (including reasonable attorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronic Standard on the purchasers compute
8、r system. APRIL 22, 2016 UL 5C tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APRIL 22, 2016 UL 5C tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APRIL 2
9、2, 2016 1 UL 5C Standard for Surface Raceways and Fittings for Use with Data, Signal, and Control Circuits First Edition April, 1998 Second Edition August, 2004 Third Edition April 22, 2016 This ANSI/UL Standard for Safety consists of the Third Edition. The most recent designation of ANSI/UL 5C as a
10、n American National Standard (ANSI) occurred on April 22, 2016. ANSI approval for a standard does not include the Cover Page, Transmittal Pages and Title Page. Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time. Proposals should be submitted via a Prop
11、osal 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 should be altered in any way. All of ULs Standards and all copyrights, ownerships, and rights regarding those S
12、tandards shall remain the sole and exclusive property of UL. COPYRIGHT 2016 UNDERWRITERS LABORATORIES INC. ANSI/UL 5C-2016UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APRIL 22, 2016 UL 5C 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT
13、AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .4 2 Components 4 3 Units of Measurement .4 4 Undated References 5 5 Installation .5 6 Glossary .5 CONSTRUCTION 7 General 6 8 Materials .6 9 Dimensional Limits 6 10 Knockouts 8 11 Mounting 10
14、 12 Covers 10 PERFORMANCE 13 General 10 14 Security of Knockout and Break-Away Tab Test 10 15 Mold Stress Test .11 16 Crush Test .11 17 Impact Test 12 18 Flammability Test .12 19 VW-1 (vertical wire) ame test/ASTM D 2671 Method C (modied) .14 20 Hinge Cycling Test 19 MARKINGS 21 Details .19 INSTALLA
15、TION INSTRUCTIONS 22 Details .20 APRIL 22, 2016 UL 5C 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover surface raceways and ttings for use with Class 2 data, signal, control circuits, and opt
16、ical ber cable. These raceway systems are intended for mechanical protection and routing of circuits. They are not intended for applications which require the use of a raceway in accordance with the National Electrical Code, NFPA 70. 1.2 These requirements do not apply to cable trays, wireways, or m
17、etal or nonmetallic raceways that are intended for use on Class 1 circuits. 1.3 These requirements do not apply to the conductors, connectors, or similar items that are used as part of the circuit. 2 Components 2.1 A component of a product covered by this standard shall comply with the requirements
18、for that component. Exception: It is not required that a component comply with a specic requirement that: a) Involves a feature or characteristic not required in the application of that component in the product covered by this standard or b) Is superseded by a requirement in this standard. 2.2 A com
19、ponent shall be used in accordance with its rating established for the intended conditions of use. 2.3 Specic components are incomplete in construction features or restricted in performance capabilities. Such components are intended for use only under limited conditions, such as certain temperatures
20、 not exceeding specied limits, and shall be used only under those specic conditions. 3 Units of Measurement 3.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information. APRIL 22, 2016 UL 5C 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FU
21、RTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 4 Undated References 4.1 Any undated reference to a code or standard appearing in the requirements of this standard shall be interpreted as referring to the latest edition of that code or standard. 5 Installation 5.1 The method of install
22、ation, as outlined in the instructions accompanying the raceway and ttings or in a statement indicating where to nd instructions on the manufacturers website, shall be practical and feasible under probable conditions met in practice. 5.2 The raceway, ttings, and accessories are to be installed as in
23、tended and examined with regard to the feasibility of installation, as well as for compliance with the construction, performance, and marking requirements in this standard. Attention is to be given to items that require particular care on the part of the raceway installer. 6 Glossary 6.1 For the pur
24、poses of this standard, the following denitions apply. 6.2 ACCESSORY A part that is added to a raceway system for a special purpose (for example, guards, hangers, or retainers). 6.3 FITTING, RACEWAY A part used to connect, change direction, or terminate a surface raceway (for example, a transition c
25、oupler, an end cap, a corner, a tee, an adapter, or a box). 6.4 NONMETALLIC A polymeric part. 6.5 NONMETALLIC SURFACE RACEWAY A raceway for surface or pendant mounting with a nonmetallic base and either a nonmetallic or metallic cover. 6.6 SURFACE METAL RACEWAY A raceway for surface or pendant mount
26、ing with a metal base and either a metallic or nonmetallic cover. 6.7 SURFACE RACEWAY SYSTEM A system consisting of a surface raceway, associated ttings, and accessories when applicable. APRIL 22, 2016 UL 5C 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PER
27、MISSION FROM UL CONSTRUCTION 7 General 7.1 The thickness of a part is not specied. The acceptability of a part is to be determined by the applicable tests. 7.2 A component of a surface raceway system shall comply with the requirements for the construction, performance, and use of that component. 7.3
28、 A surface raceway system shall consist of one or more pieces formed and constructed to make the raceway readily distinguishable from electrical conduit, electrical metallic tubing, electrical nonmetallic tubing, and other raceway systems. 7.4 The interior surface of the raceway system shall have a
29、smooth nish that is free from projections, sharp edges, burrs, ns, and other faults capable of causing damage to wires when installed as intended. 7.5 The requirements in Sections 9, 10, 11, 12, 13, 14, 15, 19, 20 and 21 cover surface raceway for optical ber cable. The requirements in Sections 9, 10
30、, 11, 12, 13, 14, 15, 18, 20 and 21 cover boxes and ttings. 8 Materials 8.1 A nonmetallic material used in raceway or ttings shall be subjected to the Infrared Spectroscopy (IR), Thermogravimetry (TGA), and Differential Scanning Calorimetry (DSC) Tests specied in the Standard for Polymeric Materials
31、 Short Term Property Evaluations, UL 746A. 8.2 Metal raceway and ttings shall be protected against the risk of corrosion on all inside and outside surfaces. Such protection is not necessarily required on cut edges. Metal that has been evaluated and determined to be inherently resistant to ordinary d
32、ry-locations indoor atmospheric corrosion is acceptable for this use. 9 Dimensional Limits 9.1 A raceway system shall provide a complete enclosure that protects the wires installed therein against damage. The complete system, when installed as intended, shall comply with the following: a) There shal
33、l not be any openings on surfaces that are accessible following installation of the system that permit the probe illustrated in Figure 9.1 to be inserted for a distance greater than 1/8 in (3.2 mm). b) A knockout or break-away tab shall completely cover the opening in which it is located, and the cl
34、earance between the knockout or break-away tab and the opening shall not be more than 0.030 in (0.76 mm). c) A multiple channel raceway system shall not permit accidental or unintentional passage of circuit conductors between channels. This is generated text for gtxt. APRIL 22, 2016 UL 5C 6UL COPYRI
35、GHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 9.2 Inside and outside surfaces of each length of a ferrous metal raceway or tting shall be clean of all scale and rust and shall be in a condition that enables the protective coating to adhere rmly and
36、 have a smooth surface. 9.3 The bend radius of a raceway tting intended for use in conjunction with a Category 5 cabling system shall not be less than that specied in the markings or installation instructions for the tting. See 21.7 and 22.6. The minimum bend radius shall be veried using a gauge, ci
37、rcle template, or other means determined to be equivalent. Figure 9.1 Probe for judging accessibility of interior NOTE: d = 1/8 in (3.2 mm) APRIL 22, 2016 UL 5C 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 10 Knockouts 10.1 A knockout th
38、at is intended for use with a locknut for a 1/2-in or larger trade-size conduit shall be surrounded on both the inside and outside surfaces by a concentric at surface to permit intended installation of a locknut. The at surface shall extend in all directions beyond the edge of the knockout for a dis
39、tance not less than that specied in Table 10.1. Exception: It is not required that the specied concentric at surface be provided when the raceway is determined to be acceptable in accordance with 10.2 and 10.3. Table 10.1 Diameter of knockout and width of surrounding at surface Trade size of conduit
40、, Knockout diameter, a Minimum width of at surface surrounding knockout, in in (mm) in (mm) 1/2 0.875 (22.23) 0.133 (3.38) 3/4 1.109 (28.17) 0.156 (3.96) 1 1.375 (34.93) 0.198 (5.03) 1-1/4 1.734 (44.04) 0.274 (6.96) a A plus tolerance of 0.031 in (0.79 mm) and a minimum tolerance of 0.015 in (0.38 m
41、m) applies to the knockout diameter. Knockout diameters are to be measured other than at points where a tab remains after removal of a knockout. 10.2 When the concentric at surface required in 10.1 is not provided, the acceptability of the at surface surrounding a knockout on both the inside and out
42、side surfaces shall be determined by application of the test gauge illustrated in Figure 10.1 having the dimensions specied in Table 10.2. To use the gauge, the knockout is to be removed and the appropriate trade size of test gauge is to be inserted in the resulting opening from either side of the r
43、aceway. It is acceptable that the gauge be offset from the center of the opening and rotated so that the at surface, including all points of the hexagonal portion of the gauge, will be in intimate contact with the surface of the raceway. The test gauge is then to be inserted in the resulting opening
44、 from the opposite side of the raceway with the same degree and position of offset from the center used on the other side. The at surface, including all points of the hexagonal portion of the gauge is to be in intimate contact with the surface of the raceway as the gauge is rotated through an angle
45、of at least 60 degrees. The test gauge shall not be canted or tilted to make contact with the surface of the raceway. 10.3 When evaluating a raceway for compliance with the requirement in 10.1, consideration is to be given to the clearances from adjacent knockouts, the sides of the raceway, and simi
46、lar obstacles. It is not required that the raceway be constructed so that conduit can be installed simultaneously in adjacent knockouts. This is generated text for gtxt. APRIL 22, 2016 UL 5C 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL T
47、able 10.2 Dimensions of test gauges for at surfaces surrounding knockouts Trade size of conduit, Nominal knockout diameter, Nominal diameter of conduit, a Maximum diameter of locknut, b in in (mm) in (mm) in (mm) 1/2 0.875 (22.23) 0.840 (21.34) 1.140 (28.96) 3/4 1.109 (28.17) 1.050 (26.67) 1.420 (36
48、.07) 1 1.375 (34.93) 1.315 (33.40) 1.770 (44.96) 1-1/4 1.734 (44.04) 1.660 (42.16) 2.281 (57.94) a Nominal outside diameter of rigid conduit. Tolerances for test gauge: 0.001 in (0.03 mm). b Maximum diameter of locknut. Tolerances for test gauge: plus 0.001 in (0.03 mm), minus 0.000 in (0.00 mm). Fi
49、gure 10.1 Dimensions of test gauges for at surfaces A Nominal diameter of conduit B Maximum diameter of locknut APRIL 22, 2016 UL 5C 9UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 11 Mounting 11.1 A raceway shall be provided with means for securing it to the mounting surface at intervals of not more than 4 ft (1.2 m). The securement means shall consist of mounting hardware such as screws or bolts or an adhesive
