1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 514A Metallic Outlet Boxes STANDARD FOR SAFETYUL 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 Metallic Outlet Boxes, UL 514A Eleventh Edition, Dated February 1, 2013 Summary of Topics This revision to UL 514A is being issued to include the following: Addition of Requirement for Solid or Stranded C
3、opper Equipment Grounding Conductor Lead. Correction in Explanatory or Approximate Value in Clause 12.8.2.1(c). Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. The new and revised requirements are substantially in
4、 accordance with Proposal(s) on this subject dated February 10, 2017. 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
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6、ing loss of prots, 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
7、paid for this Standard, 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 an
8、y error or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer system. AUGUST 11, 2017 UL 514A tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL AUGUST 11, 2017 UL 514A tr2 No Text on This PageU
9、L COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Association of Standardization and Certication NMX-J-023/1-ANCE Third Edition CSA Group CSA C22.2 No. 18.1-13 Second Edition Underwriters Laboratories Inc. UL 514A Eleventh Edition Metallic Outl
10、et Boxes February 1, 2013 (Title Page Reprinted: August 11, 2017) ANSI/UL 514A-2017UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Commitment for Amendments This standard is issued jointly by the Association of Standardization and Certicatio
11、n (ANCE), the Canadian Standards Association (Operating as “CSA Group”), and Underwriters Laboratories Inc. (UL). Comments or proposals for revisions on any part of the standard may be submitted to ANCE, CSA Group, or UL at any time. Revisions to this standard will be made only after processing acco
12、rding to the standards development procedures of ANCE, CSA Group, and UL. CSA Group and UL will issue revisions to this standard by means of a new edition or revised or additional pages bearing their date of issue. ANCE will incorporate the same revisions into a new edition of the standard bearing t
13、he same date of issue as the CSA Group and UL pages. Copyright 2017 ANCE Rights reserved in favor of ANCE ISBN 978-1-55491-946-8 2013 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 su
14、bject to review ve years from the date of publication, 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 desig
15、nation (number); relevant clause, table, 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 2017 Underwrit
16、ers Laboratories Inc. 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 Standards shall remain the sole and exclusive property of UL. This A
17、NSI/UL Standard for Safety consists of the Eleventh Edition including revisions through August 11, 2017. The most recent designation of ANSI/UL 514A as an American National Standard (ANSI) occurred on August 11, 2017. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, T
18、itle Page (front and back), or the Preface. The National Difference Page and IEC Foreword are also excluded from the ANSI approval of IEC-based standards. 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 Proposal
19、Request in ULs On-Line Collaborative Standards Development System (CSDS) at https:/. To purchase UL Standards, visit ULs Standards Sales Site at http:/ HowToOrder.aspx or call toll-free 1-888-853-3503.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION
20、FROM UL AUGUST 11, 2017 NMX-J-023/1-ANCE CSA C22.2 NO. 18.1-13 UL 514A 3 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL AUGUST 11, 2017 NMX-J-023/1-ANCE CSA-C22.2 NO. 18.1-13 UL 514A 4 No Text on This PageUL COPYRIGHTED
21、MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS Preface . 8 1 Scope 10 2 Normative references .10 3 Denitions 13 4 General requirements 15 5 Marking 16 5.1 General 16 5.2 Box CLAMPS 17 5.3 Grounding screw 18 5.4 Closures for CONCRETE BOXES .19 5.5
22、 Box volume .19 5.6 Specic conditions .19 5.7 Ceiling-suspended fan support 20 5.8 Wet location 20 5.9 Damp location boxes 20 5.10 Other application environments 21 5.11 Fixture/luminaire support boxes .21 5.12 FLOOR BOXES .22 5.13 BAR HANGERS .22 5.14 Marine boxes .22 5.15 ADJUSTABLE MUD RINGS 22 5
23、.16 ADJUSTABLE SLEEVE EXTENDERS 23 6 Instructions 23 6.1 Fixture/luminaire support boxes for use in a nished structure (old work) .23 6.2 FLOOR BOXES, FLOOR-MOUNTED ENCLOSURES, and POKE-THROUGH FLOOR FITTINGS 23 6.3 Ceiling-suspended fan support boxes 24 6.4 Wet location boxes 24 6.5 ADJUSTABLE MUD
24、RINGwithadjustablesleevenotassembledtothemudringatthefactory .24 7 Dimensions and volume 24 7.1 Sheet steel .24 7.2 Sheet aluminum .25 7.3 Cast metal boxes 25 7.4 Cast metal covers .25 7.5 Box width .25 7.6 Internal volume 26 7.7 Cover mounting hole-spacing .26 7.8 Measurement of CONDUIT BODY dimens
25、ions (Mexico and United States only) .26 8 Provisions for grounding .26 8.1 Connection means 26 8.2 Screws for gangable (sectional) boxes .30 9 Construction requirements 30 9.1 Corrosion protection .30 9.2 Knockouts 30 9.3 PARTITIONS .32 9.4 Openings for rigid conduit, electrical metallic tubing, an
26、d conduit hubs .32 9.5 Box brackets and supports .35 9.6 Boxes for UNFINISHED STRUCTURES (NEW WORK) 37 9.7 Boxes for FINISHED STRUCTURES (OLD WORK) .37 9.8 Device attachment means 38 JULY 6, 2015 NMX-J-023/1-ANCE CSA-C22.2 NO. 18.1-13 UL 514A 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRO
27、DUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 9.9 Mounting brackets .38 9.10 Supports for use with metal studs 38 9.11 Luminaire studs .39 9.12 Ceiling-suspended fan support 39 9.13 Securement of wiring systems at openings .40 9.14 Closure of openings in pryouts 40 9.15 BAR HANGERS: ceiling ins
28、tallations .40 9.16 Assembly screws 40 9.17 CLAMPS for cable, conduit, and tubing .40 9.18 ADJUSTABLE MUD RINGS 41 9.19 ADJUSTABLE SLEEVE EXTENDERS 42 10 Resistance to ingress of solid objects .42 10.1 Closure of openings 42 10.2 Boxes for use in concrete slabs .43 10.3 Area of open holes 43 10.4 Ho
29、les in CONDUIT BODIES .44 10.5 Pryout holes and slots .44 10.6 Covers .44 11 Resistance to ingress of water in marine use and other wet locations .45 11.1 General .45 11.2 Openings for conduit 45 11.3 Gaskets 45 11.4 Boxes for marine use 45 11.5 Wet and damp locations .46 12 Product testing .46 12.1
30、 Volume measurement of boxes and RAISED COVERS 46 12.2 Strength of fastening of boxes 47 12.3 Boxes with attached device-mounting straps 47 12.4 Threaded holes for ground screws 48 12.5 Ceiling-suspended fan support 48 12.6 Strength of knockouts 49 12.7 Flat areas surrounding knockouts .50 12.8 Nonm
31、etallic plug or other nonmetallic closure .50 12.9 PARTITIONS .51 12.10 CLAMPS for cable, conduit, tubing, and exible cord 52 12.11 Boxes and box supports for UNFINISHED STRUCTURES (NEW WORK) .52 12.12 Supports for use with metal studs .53 12.13 Boxes intended to be installed in a FINISHED STRUCTURE
32、 (OLD WORK) 53 12.14 Boxes intended to support a xture/luminaire or other product 54 12.15 Polymeric supporting means 55 12.16 FLOOR BOXES, FLOOR-MOUNTED ENCLOSURES, POKE-THROUGH FLOOR FITTINGS, and FLOOR BOX COVERS .55 12.17 Fixture/luminaire studs: studs and attachment to a box or cover 58 12.18 C
33、oncrete-tightness test 59 12.19 Marine use .60 12.20 Resistance to ingress of water 62 12.21 Permanence of marking .63 12.22 Other application environments .64 12.23 ADJUSTABLE MUD RINGS 64 13 Corrosion protection 70 14 Tests on alternate corrosion protection systems 71 FEBRUARY 1, 2013 NMX-J-023/1-
34、ANCE CSA-C22.2 NO. 18.1-13 UL 514A 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL ANNEX A (normative) Component Standards (See Clause 4.1.) ANNEX B (normative) Tests on Alternate Corrosion Protection Systems (See Clause 14.1.) B.1 General
35、.97 B.2 Air-oven conditioning exposure 97 B.3 Resistance to salt-spray (fog) test 97 B.4 Resistance to moist carbon dioxide-sulfur dioxide-air test .98 B.5 Resistance to ultraviolet light and water test .99 B.6 Flammability .99 FEBRUARY 1, 2013 NMX-J-023/1-ANCE CSA-C22.2 NO. 18.1-13 UL 514A 7UL COPY
36、RIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Preface This is the harmonized ANCE, CSA Group, and UL standard for Metallic Outlet Boxes. It is the third edition of NMX-J-023/1-ANCE, the second edition of CSA C22.2 No. 18.1, and the eleventh editi
37、on of UL 514A. This edition of CSA C22.2 No. 18.1 supersedes the previous edition(s) published in 2004. This harmonized standard has been jointly revised on August 11, 2017. For this purpose, ANCE, CSA Group and UL are issuing revision pages dated August 11, 2017. This harmonized standard was prepar
38、ed by the Association of Standardization and Certication (ANCE), CSA Group, and Underwriters Laboratories Inc. (UL). The efforts and support of the Technical Harmonization Committee for Switch and Outlet Boxes, of the Council on the Harmonization of Electrotechnical Standards of the Nations of the A
39、mericas (CANENA), are gratefully acknowledged. This standard is considered suitable for use for conformity assessment within the stated scope of the Standard. The present Mexican standard was developed by the CT committee named from the Comite de Normalizacion de la Asociacion de Normalizacion y Cer
40、ticacion, A.C., CONANCE, with the collaboration of the type of manufacture manufacturers and users. This standard was reviewed by the CSA Integrated Committee on Wiring Devices, under the jurisdiction of the CSA Technical Committee on Wiring Products and the CSA Strategic Steering Committee on Requi
41、rements for Electrical Safety, and has been formally approved by the CSA Technical Committee. This standard has been approved by the American National Standards Institute (ANSI) as an American National Standard. Application of Standard Where reference is made to a specic number of samples to be test
42、ed, 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 note that it remains the responsibility of the users of the standard to judge its suitability for their particular purpose. Level
43、 of Harmonization This standard uses the IEC format but is not based on, nor is it to be considered equivalent to, an IEC standard. This standard is published as an equivalent standard for ANCE, CSA Group, and UL. An equivalent standard is a standard that is substantially the same in technical conte
44、nt, 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 example, because of fundamental climatic, geographical, technological, or infrastructural factors, scientic justicat
45、ion, or the level of protection that the country considers appropriate. Presentation is word for word except for editorial changes. AUGUST 11, 2017 NMX-J-023/1-ANCE CSA-C22.2 NO. 18.1-13 UL 514A 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM
46、UL Reasons for differences from IEC The Technical Harmonization Committee identied the following IEC standard within the scope of this standard: IEC 60670 (1989-11), General requirements for enclosures for accessories for household and similar xed electrical installations and Amendment No. 1 (1994-0
47、1). It was further recognized that signicant revision of this IEC standard is in process, with participation by the IEC National Committees in each of the three countries that are party to this standard. The THC determined that the safe use of electrical boxes is critically dependent on the design a
48、nd performance of the system with which they are intended to be installed. Signicant investigation is required to assess safety and system compatibility issues that may lead to harmonization of traditional North American electrical boxes with those presently addressed in the known IEC standards. The
49、 THC agreed such future investigation might be facilitated by completion of harmonization of the North American standards for electrical boxes. Interpretations The interpretation by the standards development organization of an identical or equivalent standard is based on the literal 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 litera
