1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1660 Liquid-Tight Flexible Nonmetallic ConduitUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED
2、 FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Liquid-Tight Flexible Nonmetallic Conduit, UL 1660 Fifth Edition, Dated July 2, 2014 Summary of Topics New Fifth Edition of the Standard for Liquid-Tight Flexible Nonmetallic Conduit, UL 1660, with the fo
3、llowing changes: 1. Revised Requirements for Evaluating Conduit Damage for Cold Impact, Tensile, Cold Flexibility and Weather Resistance tests 2. Removal of Canadian Deviation for Direct Burial Stiffness 3. Updates to Standards References The revised requirements are substantially in accordance with
4、 Proposal(s) on this subject dated January 31, 2014. All rights reserved. No part of this 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 thi
5、s Standard as is without warranty of any kind, either expressed or implied, including but 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
6、, lost savings, loss of data, or any other damages arising out of the use of or the inability 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 Sta
7、ndard, regardless of the form of the claim. Users of the electronic versions of ULs Standards 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 deviat
8、ion introduced while purchaser is storing 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 prefa
9、ce. The prior 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. JULY 2, 2014 UL 1660 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMI
10、SSION FROM UL JULY 2, 2014 UL 1660 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CSA Group CSA C22.2 No. 227.2.1-14 Second Edition Underwriters Laboratories, Inc. UL 1660 Fifth Edition Liquid-Tight Flexible Nonmetal
11、lic Conduit July 2, 2014 ANSI/UL 1660-2014UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Commitment for Amendments This standard is issued jointly by the Canadian Standards Association (operating as “CSA Group”) and Underwriters Laboratorie
12、s Inc. (UL). Comments or proposals for revisions on any part of the standard may be submitted to CSA Group or UL at any time. Revisions to this standard will be made only after processing according to the standards development procedures of CSA Group and UL. CSA Group and UL will issue revisions to
13、this standard by means of a new edition or revised or additional pages bearing their date of issue. ISBN 978-1-77139-545-8 2014 CSA Group All rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permission of the publisher. This Standard is subject
14、to periodic review, and suggestions for its improvement will be referred to the appropriate committee. To submit a proposal for change, please send the following information to inquirescsagroup.org and include Proposal for change in the subject line: Standard designation (number); relevant clause, t
15、able, and/or gure number; wording of the proposed change; and rationale for the change. To purchase CSA Group Standards and related publications, visit CSA Groups Online Store at shop.CSA.ca or call toll-free 1-800-463-6727 or 416-747-4044. Copyright 2014 Underwriters Laboratories Inc. ULs Standards
16、 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 Standards shall remain the sole and exclusive property of UL. This ANSI/UL Standard for Safety consists
17、 of the Fifth Edition. The most recent designation of ANSI/UL 1660 as an American National Standard (ANSI) occurred on July 2, 2014. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page (front and back), or the Preface. Comments or proposals for revisions on an
18、y 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:/. To purchase UL Standards, visit Comm 2000 at http:/m- or call toll-free 1-888-853-3503.UL COPYRIGHTED MATERIAL N
19、OT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS Preface .4 1 Scope .6 2 Denitions 6 3 General 6 3.1 Components .6 3.2 Reference publications .7 3.3 Units of measurement .8 4 Construction 8 4.1 General .8 4.2 Materials 8 4.3 Dimensions .9 5 Tests .10 5.1 Gen
20、eral 10 5.2 Vertical ame test .10 5.3 Flame test in cable trays FT4 (OPTIONAL) 12 5.4 Cold impact .12 5.5 Resistance to deection 12 5.6 Tension 12 5.7 Secureness forces 13 5.8 Cold exibility .13 5.9 Deformation 14 5.10 Mechanical water absorption test .15 5.11 Moisture penetration 16 5.12 Weather re
21、sistance 17 5.13 Physical properties of separate jacket and of integral lining or jacket requirements . . .17 5.14 Apparatus for conducting physical tests .18 5.15 Durability of ink printing 22 5.16 Direct burial stiffness .23 6 Markings .23 6.1 Surface 23 6.2 Package .24 Tables 25 Figures .29 JULY
22、2, 2014 CSA C22.2 NO. 227.2.1-14 UL 1660 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Preface This is the harmonized CSA Group and UL standard for Liquid-Tight Flexible Nonmetallic Conduit.I ti st h e second edition of CSA C22.2 No. 227.
23、2.1 and the fth edition of UL 1660. The requirements of CSA Standard C22.2 No.227.2, published in 1993, are superseded by this standard, for products covered in this standard, as indicated in the Scope of this standard. This edition of UL 1660 supersedes the previous edition(s) published on February
24、 4, 2000. This common standard has been jointly revised on April 18, 2008. This harmonized standard was prepared by the CSA Group and Underwriters Laboratories Inc. (UL). The efforts and support of the Technical Harmonization Committee 23A LFNC Working Group, of the Council on the Harmonization of E
25、lectrotechnical Standards of the Nations of the Americas (CANENA), are gratefully acknowledged. This standard is considered suitable for use for conformity assessment within the stated scope of the standard. This standard was reviewed by the CSA Subcommittee on ICCM01-Nonmetallic Conduit, Tubing and
26、 Fittings under the jurisdiction of the CSA Technical Committee on Wiring Products and the CSA Strategic Steering Committee on Requirements for Electrical Safety, and has been formally approved by the Technical Committee. This standard has been approved by the American National Standards Institute (
27、ANSI) as an American National Standard. Application of Standard Where reference is made to a specic number of samples to be tested, the specied number is to be considered a minimum quantity. Note: Although the intended primary application of this standard is stated in its scope, it is important to n
28、ote that it remains the responsibility of the users of the standard to judge its suitability for their particular purpose. Level of harmonization This standard uses the IEC format but is not based on, nor is it considered equivalent to, an IEC standard. This standard is published as an equivalent st
29、andard for CSA Group and UL. An equivalent standard is a standard that is substantially the same in technical content, except as follows: Technical national differences are allowed for codes and governmental regulations as well as those recognized as being in accordance with NAFTA Article 905, for e
30、xample, because of fundamental climatic, geographical, technological, or infrastructural factors, scientic justication, or the level of protection that the country considers appropriate. Presentation is word for word except for editorial changes. Reasons for differences from IEC The THSC determined
31、the safe use of electrical liquid-tight exible conduit and ttings is dependent on the design and performance of the conduit and cable systems with which they are intended to be installed. Signicant investigation is required to assess safety and system compatibility issues that may lead to harmonizat
32、ion of traditional North American electrical conduit and cable ttings with those presently JULY 2, 2014 CSA C22.2 NO. 227.2.1-14 UL 1660 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL addressed in the known IEC standards. The THSC agreed s
33、uch future investigation might be facilitated by completion of harmonization of the North American standards for electrical liquid-tight exible conduit and ttings. Interpretations The interpretation by the standards development organization of an identical or equivalent standard is based on the lite
34、ral text to determine compliance with the standard in accordance with the procedural rules of the standards development organization. If more than one interpretation of the literal text has been identied, a revision is to be proposed as soon as possible to each of the standards development organizat
35、ions to more accurately reect the intent. CSA Group effective date The effective date for CSA Group will be announced through a CSA Informs or CSA Group Certication Notice. UL effective date As of July 2, 2014, all products Listed or Recognized by UL must comply with the requirements in this standar
36、d. A UL effective date is one established by Underwriters Laboratories Inc. and is not part of the ANSI approved standard. JULY 2, 2014 CSA C22.2 NO. 227.2.1-14 UL 1660 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Liquid-Tight Flexible N
37、onmetallic Conduit 1 Scope 1.1 These requirements cover liquid-tight exible nonmetallic conduit in the 3/8 4 (12 103) trade sizes of Type LFNC-A (Layered), Type LFNC-B (Integral), and Type LFNC-C (Corrugated) constructions. The conduit is intended for installation in accordance with the National Ele
38、ctrical Code (NEC) and the Canadian Electrical Code (CEC), Part 1. The values in parentheses are metric trade designators of conduit. 1.2 Conduit covered by this Standard is intended for use in wet, dry, or oily locations at a maximum of 60C (140F), unless otherwise marked. (See Clause 6.) 1.3 Fitti
39、ngs for liquid-tight exible nonmetallic conduit are covered in UL 514B or CSA C22.2 No. 18.3. 2 Denitions 2.1 For the purposes of this Standard the following denitions apply. LIQUID-TIGHT FLEXIBLE NONMETALLIC CONDUIT A conduit that is liquid-tight, can be bent by hand without other assistance, and i
40、s intended to ex throughout its life. TYPE LFNC-A (Layered) A conduit with a smooth seamless inner core and cover bonded together with one or more reinforcement layers between the core and cover. TYPE LFNC-B (Integral) A conduit with a smooth inner surface with integral reinforcement within the cond
41、uit wall. TYPE LFNC-C (Corrugated) A conduit with corrugated internal and external surfaces without integral reinforcement within the conduit wall. 3 General 3.1 Components 3.1.1 Except as indicated in Clause 3.1.2, a component of a product covered by this Standard shall comply with the requirements
42、 for that component. A component shall comply with both the Underwriters Laboratories Inc. and Canadian Standards Association standards for the component. 3.1.2 A component is not required to comply with a specic requirement that: a) Involves a feature or characteristic not required in the applicati
43、on of the component in the product covered by this standard, or b) Is superseded by a requirement in this standard. JULY 2, 2014 CSA C22.2 NO. 227.2.1-14 UL 1660 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3.1.3 A component shall be use
44、d in accordance with its rating established for the intended conditions of use. 3.1.4 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 not exceeding sp
45、ecied limits, and shall be used only under those specic conditions. 3.2 Reference publications 3.2.1 Where reference is made to any Standards, such reference shall be considered to refer to the latest editions and revisions thereto available at the time of printing, unless otherwise specied. CSA Gro
46、up Standards Note: For products intended for use in Canada, general requirements are given in CAN/CSA-C22.2 No. 0 C22.1-12 Canadian Electrical Code (CEC), Part I C22.2-No. 0-10 General requirements Canadian Electrical Code, Part II CAN/CSA-C22.2 No. 0.17-00 (R2013) Evaluation of Properties of Polyme
47、ric Materials C22.2 No.18.3-12 Conduit, Tubing, and Cable Fittings C22.2 No. 211.0-03 (R2013) General Requirements and Methods of Testing for Nonmetallic Conduit UL Standards UL 94 Tests for Flammability of Plastic Materials for Parts in Devices and Appliances UL 514B Conduit, Tubing, and Cable Fitt
48、ings ANSI/NFPA Standards ANSI/NFPA 70-2014 National Electrical Code (NEC) ASTM Standards ASTM D412-06a (R2013) Standard Test Methods for Vulcanized Rubber and Thermoplastic Rubbers and Thermoplastic Elastomers Tension ASTM D 2412-11 Standard Test Method for Determination of External Loading Characte
49、ristics of Plastic Pipe by Parallel-Plate Loading JULY 2, 2014 CSA C22.2 NO. 227.2.1-14 UL 1660 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL ASTM D 2444-99 (R2010) Standard Test Method for Determination of the Impact Resistance of Thermoplastic Pipe and Fittings by Means of a Tup (Falling Weight) ASTM D 5025-12 Standard Specication for Laboratory Burner Used for Small-Sc
