1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 514C Nonmetallic Outlet Boxes, Flush-Device Boxes, and CoversUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL
2、 NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Nonmetallic Outlet Boxes, Flush-Device Boxes, and Covers, UL 514C Fourth Edition, Dated April 8, 2014 Summary of Topics The revisions dated December 10, 2014 were issued to incorporate the
3、following: Correlation of RTI Requirements for Polymeric Box Extenders. Revisions to Section 53, Resistance to Ultraviolet Light and Water, by Adding an Option for Xenon-Arc Method. Revisions to Improve the Correlation of Fixture/Luminaire and Ceiling Suspended Fan Support Requirements Between UL 51
4、4C and the Standard for Metallic Outlet Boxes, UL 514A. Revisions to Improve the Correlation of Floor Box Requirements Between UL 514C and the Standard for Metallic Outlet Boxes, UL 514A. Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertic
5、al 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 becomes effective. The revised requirements are substantially in accordance with Pro
6、posal(s) on this subject dated August 1, 2014 and October 3, 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. U
7、L provides this 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
8、 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 pai
9、d 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 any e
10、rror or deviation 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 indicate
11、d in the note following the affected item. 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. DECEMBER 10, 2014 UL 514C tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHE
12、R REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL DECEMBER 10, 2014 UL 514C tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APRIL 8, 2014 (Title Page Reprinted: December 10, 2014) 1 UL 514C Standard for Nonmet
13、allic Outlet Boxes, Flush-Device Boxes, and Covers First Edition August, 1979 Second Edition October, 1988 Third Edition December, 1996 Fourth Edition April 8, 2014 This ANSI/UL Standard for Safety consists of the Fourth Edition including revisions through December 10, 2014. The most recent designat
14、ion of ANSI/UL 514C as an American National Standard (ANSI) occurred on December 10, 2014. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page, or effective date information. The Department of Defense (DoD) has adopted UL 514C on August 17, 1989. The publicati
15、on of revised pages or a new edition of this Standard will not invalidate the DoD adoption. 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 Request in ULs On-Line Collaborative Standards Development Syst
16、em (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 Standards shall remain the sole and exclusive property of UL. COPYRIG
17、HT 2014 UNDERWRITERS LABORATORIES INC. ANSI/UL 514C-2014UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL DECEMBER 10, 2014 UL 514C 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT P
18、ERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .9 2 Terminology 9 3 Glossary .9 4 Units of Measurement 10 4A Normative References 10 BOXES AND COVERS CONSTRUCTION 5 General .10A 5.1 All boxes and covers .10A 5.2 Boxes and covers intended for use with nonmetallic-sheathed cable or open wiring . . .1
19、1 5.3 Boxes and covers intended for use with rigid nonmetallic conduit .11 5.4 Nonmetallic outlet box covers for use in damp and wet locations 12 5.5 Boxes and covers intended for use with electrical nonmetallic tubing 13 6 Protection Against Corrosion 13 7 Assembly .13 8 Dimensions .15 9 Device Sup
20、port 15 10 Floor Boxes 15 11 Ceiling-Suspended Fan Support 15 12 Partitions 16 PERFORMANCE 13 General 17 14 Protection Against Corrosion .17 15 Volume Verication Test .19 16 Scrub-Water Exclusion Test 19 17 Floor Box and Cover Loading Test 20 18 Support for Floor Boxes .20 BOXES INTENDED FOR USE WIT
21、H NONMETALLIC-SHEATHED CABLE OR OPEN WIRING CONSTRUCTION 19 Materials .20 PERFORMANCE 20 Hot-Wire Ignition 21 21 Dielectric Voltage Withstand .23 DECEMBER 10, 2014 UL 514C 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL BOXES INTENDED FOR U
22、SE WITH NONMETALLIC-SHEATHED CABLE OR OPEN WIRING CONSTRUCTION 22 Knockouts .23 23 Connections for Wiring Systems 24 24 Clamps for Nonmetallic-Sheathed Cable .25 25 Supports .25 26 Grounding .26 27 Extension Rings 26 28 Box Extenders 27 PERFORMANCE 29 Knockouts .28 30 Clamps for Nonmetallic-Sheathed
23、 Cable .28 30.1 Pull Test 28 30.2 Assembly at Low Temperature Test 29 31 Clamps for Flexible Nonmetallic Tubing .29 32 Supports .29 32.1 General .29 32.2 Fixture/Luminaire support .30 32.3 Ceiling-suspended fan support .31 32.4 Boxes intended to be installed in a nished structure .32 32.5 Boxes for
24、support of products up to 50 pounds (22.7 kg) 32 32.6 Polymeric supporting means .33 33 Water Absorption .33 34 Flammability .36 34.1 Materials 36 34.2 Boxes .38 35 Mold Stress 40 36 Resistance to Crushing 41 37 Resistance to Impact 41 38 Threaded or Unthreaded Holes for Screws in Molded Bosses 42 3
25、9 Openings Employing Quick-Set Fastening Devices .43 COVERS FOR BOXES INTENDED FOR USE WITH NONMETALLIC-SHEATHED CABLE OR OPEN WIRING CONSTRUCTION 40 Materials .45 40.1 General .45 40.2 Relative thermal index 46 41 Holes in Outlet Box Covers 46 PERFORMANCE 42 Flammability .47 43 Outlet Box Covers fo
26、r Support of a Device .48 DECEMBER 10, 2014 UL 514C 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL NONMETALLIC OUTLET BOX COVERS FOR USE IN DAMP AND WET LOCATIONS CONSTRUCTION 44 General 48 45 Protection Against Corrosion .49 46 Relative T
27、hermal Index of Materials .49 47 Gaskets .49 48 Installation of Receptacles .49 PERFORMANCE 49 General 50 50 Sealing Compound 50 51 Gaskets .51 52 Resistance to Moisture 51 52.1 General .51 52.2 Assemblies for use in wet locations and wet locations with cover closed 52 52.3 Assemblies for use in wet
28、 locations .52 53 Resistance to Ultraviolet Light and Water .52A 54 Mold Stress .52B 55 Water Absorption 52B 56 Dielectric Voltage Withstand 52B 57 Hot-Wire Ignition 53 58 Crushing .55 59 Impact .55 60 Flammability .56 BOXES INTENDED FOR USE WITH ELECTRICAL NONMETALLIC TUBING CONSTRUCTION 61 General
29、 56 PERFORMANCE 62 General 57 COVERS INTENDED FOR USE WITH BOXES INTENDED FOR USE WITH ELECTRICAL NONMETALLIC TUBING CONSTRUCTION 63 General 57 PERFORMANCE 64 General 58 DECEMBER 10, 2014 UL 514C 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM
30、 UL BOXES AND COVERS INTENDED FOR USE WITH RIGID NONMETALLIC CONDUIT CONSTRUCTION 65 General 58 66 Bodies, Boxes, and Covers 58 66.1 General .58 66.2 Thickness .59 66.3 Connections for conduit .59 66.4 Covers 61 67 Boxes Intended for Use in Wet Locations 63 68 Conduit Bodies .63 PERFORMANCE 69 Gener
31、al 65 70 Knockouts .65 71 Supports .65 72 Closures .65 73 Water Absorption .66 74 Flame-Retardant Properties 66 75 Heat Distortion .66 76 Extrusion or Molding Process 67 77 Physical Properties .67 77.1 General .67 77.2 Preparation of specimens .68 77.3 Test method .69 78 Identication Tests 70 79 Fle
32、xural Strength .70 80 Resistance to Crushing 70 81 Low-Temperature Handling 71 82 Resistance to Impact 71 83 Bending .71 84 Pull Out .72 85 Resistance to Specic Reagents 73 86 Wet Locations 74 87 Concrete Tightness .76 FLOOR NOZZLES CONSTRUCTION 88 Materials .77 88.1 General .77 88.2 Relative therma
33、l index 78 PERFORMANCE 89 General 78 90 Resistance to Impact 78 91 Resistance to Crushing 80 APRIL 8, 2014 UL 514C 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MARKING 92 Details .80 92.1 General .80 92.2 Boxes intended for use with nonm
34、etallic-sheathed cable or open wiring .82 92.3 Boxes intended for use with rigid nonmetallic conduit .84 92.4 Outlet box covers for use in wet and damp locations .85 92.5 Boxes intended for use with electrical nonmetallic tubing 85 92.6 Assemblies encompassing receptacles and nonmetallic covers 85 9
35、3 Instructions 85 SUPPLEMENT SA - NONMETALLIC OUTLET BOXES FOR MARINE USE GENERAL SA1 Scope SA1 SA2 Glossary SA1 CONSTRUCTION SA3 General SA1 SA4 Mounting .SA2 SA5 Supply Connections SA2 PERFORMANCE SA6 Watertight Test SA2 SA7 Dripproof Test .SA2 SA8 Air-Oven Conditioning Test Gaskets SA3 MARKING SA
36、9 General SA3 SUPPLEMENT SB - NONMETALLIC BOXES FOR INSTALLATION IN FIRE RESISTANCE RATED WALL AND PARTITION ASSEMBLIES GENERAL SB1 Scope SB1 SB2 Glossary SB1 CONSTRUCTION SB3 General SB2 DECEMBER 10, 2014 UL 514C 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHO
37、UT PERMISSION FROM UL PERFORMANCE SB4 General SB2 SB5 Test Assembly SB3 SB5.1 General SB3 SB5.2 Materials .SB7 SB5.3 Construction of the test assembly .SB8 SB5.4 Testing SB9 SB6 Acceptance Criteria SB9 MARKING SB7 General .SB10 APRIL 8, 2014 UL 514C 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHE
38、R REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover nonmetallic outlet boxes, conduit bodies, ush-device boxes, extension rings, covers, oor boxes, oor nozzles, and concrete boxes to be employed in accordance with the National Electrical Code,
39、NFPA 70. 1.2 These requirements do not cover boxes and covers for use in hazardous locations as dened in the National Electrical Code, NFPA 70. 1.3 These requirements do not cover cabinets and cutout boxes. 2 Terminology 2.1 In the following text, a requirement that applies only to one or more types
40、 of box or cover is so identied by a specic reference in that requirement to the type or types of boxes or covers involved. Absence of such reference indicates that the requirement applies to all types of boxes or covers. 3 Glossary 3.1 For the purpose of this standard the following denitions apply.
41、 3.2 BAR HANGER An adjustable supporting device intended for the support of an outlet box, conduit box, or device box between two structural members in a nished or unnished structure. 3.2 effective May 21, 2014 3.3 BOX EXTENDER A component installed in or on a box that is mounted in a nished structu
42、re intended to extend the electrical enclosure up to the new nished surface. The box extender rests on the edge of the existing box (xed depth) or extends into the box (adjustable depth). The ange of the box extender, if provided, rests on the nished surface. 3.4 CLAMP Part of a box intended to secu
43、re raceway, tubing, or cable to the box. 3.5 CONCRETE BOX A box intended for support in concrete. It may be constructed to permit end- to-end extension and the application of covers on two sides. It is not intended for installation in a oor. 3.6 CONDUIT BODY A separate part of a raceway system inten
44、ded to provide access to the interior of the system through one or more removable covers at a junction of two or more sections or at a terminal point. Boxes, such as FS, FD, and larger boxes, and ttings, such as capped elbows and service entrance elbows, are not considered to be conduit bodies. 3.7
45、EXTENSION RING A ring, which is not required to be round, intended to extend the sides of an outlet box or ush-device box to increase the box depth, volume or both. It is mechanically secured to the box. 3.8 FLOOR BOX A box provided with means for ush mounting in a oor. It is sealed against the entr
46、ance of scrub water at the oor level. APRIL 8, 2014 UL 514C 9UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3.9 FLOOR NOZZLE An enclosure used on a wiring system, intended primarily as a housing for a receptacle. It is provided with a means
47、, such as a collar, for surface-mounting on a oor, and it may or may not include a stem to support it above the oor level. It is sealed against the entrance of scrub water at the oor level. 3.10 FLUSH-DEVICE BOX A box provided with ears or anges with No. 6-32 threaded or unthreaded holes spaced to a
48、ccept the mounting yoke of a wiring device or devices. This box is provided with a mounting means, and it may or may not include clamps for connection of cable, tubing, or conduit. 3.11 OUTLET BOX A box used on a wiring system, usually at an outlet. It is provided with means for connection to a wiri
49、ng system and intended primarily to enclose splices and wiring devices, but may also be acceptable as the support of a xture/luminaire or other equipment intended for similar installation. This box may or may not be provided with studs or a bar hanger or with clamps for securing cable, tubing, or conduit. 3.12 OUTLET BOX COVER A cover intended to provide enclosure for the face of a box. The cover may or may not support or be provided with means for support of a wiri
