UL 1241-2003 UL Standard for Safety Junction Boxes for Swimming Pool Luminaires (Seventh Edition Reprint with Revisions through and Including August 28 2013)《游泳池照明设备用分线盒》.pdf

1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1241 Junction Boxes for Swimming Pool LuminairesUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZ

2、ED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Junction Boxes for Swimming Pool Luminaires, UL 1241 Seventh Edition, Dated June 11, 2003 Summary of Topics These revisions are being issued to update requirements for the number of grounding terminatio

3、ns required and for strain relief and installation instructions. Text that has been changed in 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 effecti

4、ve date note indicating the date of publication or the date on which the changed requirement becomes effective. The new and revised requirements are substantially in accordance with Proposal(s) on this subject dated June 28, 2013. All rights reserved. No part of this publication may be reproduced, s

5、tored 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 not limited to, the implied warr

6、anties 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 inability to use this Standard, even i

7、f 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 Standards for Safety agree to defend,

8、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 computer system. The requirements in th

9、is 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 prior text for requirements that have been revised and that have a future effective date

10、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 28, 2013 UL 1241 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION F

11、ROM UL Future Effective Date Reference August 28, 2014 Paragraph 20.1. AUGUST 28, 2013 UL 1241 tr2UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JUNE 11, 2003 (Title Page Reprinted: August 28, 2013) 1 UL 1241 Standard for Junction Boxes for

12、 Swimming Pool Luminaires Prior to the rst edition, junction boxes for swimming pool luminaires were investigated using the rst edition of the Standard for Underwater Lighting Fixtures and Junction Boxes for Swimming Pools, UL 676. The First through Sixth Editions of this standard were titled Juncti

13、on Boxes for Swimming Pool Lighting Fixtures. First Edition April, 1976 Second Edition November, 1978 Third Edition January, 1985 Fourth Edition June, 1989 Fifth Edition June, 1994 Sixth Edition October, 1998 Seventh Edition June 11, 2003 This ANSI/UL Standard for Safety consists of the Seventh Edit

14、ion including revisions through August 28, 2013. The most recent designation of ANSI/UL 1241 as an American National Standard (ANSI) occurred on August 28, 2013. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page, or effective date information. Comments or pr

15、oposals 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 System (CSDS) at http:/. ULs Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy

16、 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. COPYRIGHT 2013 UNDERWRITERS LABORATORIES INC. ANSI/UL 1241-2013UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER

17、 REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL AUGUST 28, 2013 JUNCTION BOXES FOR SWIMMING POOL LUMINAIRES - UL 1241 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .7 2 General 7

18、 2.1 Components .7 2.2 Units of measurement .7 2.3 Undated references .7 3 Glossary .8 CONSTRUCTION 4 General 8 5 Materials and Thicknesses .8 5.1 General .8 5.2 Polymeric material 9 6 Gaskets 11 7 Connections for Wiring .11 8 Plugs .12 9 Wiring Terminals and Connectors 12 10 Grounding and Bonding .

19、13 11 Strain Relief 14 12 Marked Volume Verication 14 PERFORMANCE 13 Strain-Relief Test .14 14 Watertightness Test .15 15 Gasket Test 15 16 Turn Prevention Test 15 17 Bonding Millivolt Drop Test .16 18 Polymeric Materials Tests 16 18.1 General .16 18.2 Mold stress investigation 16 18.3 Flammability

20、test .16 18.4 Compression test .16A 18.5 Impact test .16A MARKINGS 19 General 16B INSTRUCTIONS 20 Installation .17 AUGUST 28, 2013 JUNCTION BOXES FOR SWIMMING POOL LUMINAIRES - UL 1241 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APPENDI

21、X A Standards for ComponentsA1 JUNE 11, 2003 JUNCTION BOXES FOR SWIMMING POOL LUMINAIRES - UL 1241 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JUNE 11, 2003 JUNCTION BOXES FOR SWIMMING POOL LUMINAIRES - UL 1241 5 No Text on This PageUL

22、COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL This page intentionally left blank. NOVEMBER 25, 2008 JUNCTION BOXES FOR SWIMMING POOL LUMINAIRES - UL 1241 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT

23、 PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover junction boxes for use with swimming pool luminaires intended for installation and use in accordance with the National Electrical Code, NFPA 70. 2 General 2.1 Components 2.1.1 Except as indicated in 2.1.2, a component of a product

24、 covered by this standard shall comply with the requirements for that component. See Appendix A for a list of standards covering components generally used in the products covered by this standard. 2.1.2 A component is not required to comply with a specic requirement that: a) Involves a feature or ch

25、aracteristic not required in the application of the component in the product covered by this standard, or b) Is superseded by a requirement in this standard. 2.1.3 A component shall be used in accordance with its rating established for the intended conditions of use. 2.1.4 Specic components are inco

26、mplete in construction features or restricted in performance capabilities. Such components are intended for use only under limited conditions, such as certain temperatures not exceeding specied limits, and shall be used only under those specic conditions. 2.2 Units of measurement 2.2.1 Values stated

27、 without parentheses are the requirement. Values in parentheses are explanatory or approximate information. 2.3 Undated references 2.3.1 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

28、standard. JUNE 11, 2003 JUNCTION BOXES FOR SWIMMING POOL LUMINAIRES - UL 1241 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3 Glossary 3.1 For the purpose of this standard the following denitions apply. 3.2 CONDUIT HUB A female threaded c

29、onnector that is integral with the box material for connection of threaded rigid conduit. 3.3 JUNCTION BOX Any junction box for use with swimming pool luminaires that is covered by this standard. CONSTRUCTION 4 General 4.1 The construction of a junction box and its cover shall have the strength and

30、rigidity required to resist the abuses to which it will be subjected without increasing any risk of re, electric shock, or injury to persons due to total or partial collapse with the attendant reduction in spacings, loosening or displacement of parts, or other defects. 4.2 A part that the conductors

31、 are capable of contacting in the box shall be free from sharp or rough edges and surfaces that are capable of causing abrasion. 4.3 A box, its cover, and any assembly hardware shall be packaged together as a single unit. 5 Materials and Thicknesses 5.1 General 5.1.1 A box and its cover shall be: a)

32、 Of copper, brass, or other metal inherently resistant to corrosion or b) Of a polymeric material evaluated for use as an enclosure or cover. Zinc-base die-cast metal, sheet steel, cast iron, and sheet or cast aluminum are not to be used. 5.1.2 A cast-metal box or cover shall have a wall thickness n

33、ot less than 3.2 mm (1/8 inch). Exception: A permanent mold-cast box or cover may have a wall thickness of not less than 2.4 mm (3/32 inch). JUNE 11, 2003 JUNCTION BOXES FOR SWIMMING POOL LUMINAIRES - UL 1241 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PE

34、RMISSION FROM UL 5.2 Polymeric material 5.2.1 A polymeric material is not prohibited from being used when, after considering its: a) Mechanical strength and rigidity; b) Resistance to impact; c) Moisture-absorptive properties; d) Combustibility; e) Resistance to temperatures and atmospheric conditio

35、ns likely to be encountered under all conditions of use; f) Resistance to arcing, sunlight, and hot-wire ignition; and g) Aging characteristics, it is able to withstand the temperature and use to which it will be subjected. 5.2.2 When investigating the long-term aging characteristics of a polymeric

36、material as specied in 5.2.1, the relative thermal index shall be at least: a) 80C (176F) for electrical properties and for mechanical properties without impact and b) 75C (167F) for electrical properties and for mechanical properties with impact. 5.2.3 The relative thermal index specied in 5.2.2 sh

37、all be determined by the long term thermal aging programs described in the Standard for Polymeric Materials Long Term Property Evaluations, UL 746B. Exception No. 1: The materials specied in Table 5.1 are not prohibited from being used without conducting a test to determine the relative thermal inde

38、x. Exception No. 2: A material that has been previously investigated and determined to be applicable is not required to be tested to determine the relative thermal index. JUNE 11, 2003 JUNCTION BOXES FOR SWIMMING POOL LUMINAIRES - UL 1241 9UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCT

39、ION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Table 5.1 Relative thermal indices based upon past eld test performance and chemical structure Material Generic thermal index, C Polyamide (Type 6, 11, 12, 66, 610, or 612 nylon) a 65 Polycarbonate a 75 Polybutylene (polytetramethylene) terephthalate 75

40、 Polypropylene a 65 Molded phenolic compounds b 150 Molded melamine b,c specic gravity 1.55 130 specic gravity 1.55 150 Molded melamine/phenolic compounds b,c specic gravity 1.55 130 specic gravity 1.55 150 Molded urea b 100 Acrylonitrile butadine styrene 60 Silicone molding resin b,c 150 Epoxy mold

41、ing resin b,c 130 Molded diallyl phthalate b,c 130 Molded unsaturated polyester b,c alkyd molding compounds (AMC), specic gravity 1.75 130 Bulk or dough molding compounds (BMC or DMC) 130 (105 electrical) Cold molded phenolic, melamine, or melamine-phenolic compounds c specic gravity 1.55 130 specic

42、 gravity 1.55 150 NOTE Generic thermal index is for homopolymer resins only unless a specic co-polymer or blend is listed. In the case of alloys, the lowest generic index of any component shall be assigned to the composite. a Includes glass ber reinforcement and talc, mineral, calcium carbonate, and

43、 other inorganic llers. b Includes only compounds molded by high temperature and high pressure processes, such as injection, compression, transfer molding, and match metal die molding; excludes compounds molded by open mold or low pressure molding processes, such as hand lay-up, spray-on, contact ba

44、g, lament winding, rotational molding, and powder coating (uidized bed, electrostatic spray, hot dip, or ow coating). c Includes materials having ller systems of brous (other than synthetic organic) types but excludes ber reinforcement systems using resins that are applied in liquid form. Synthetic

45、organic llers may be used at temperatures not greater than 105C. 5.2.4 Sockets shall comply with the socket requirements in the Standard for Nonmetallic Outlet Boxes, Flush-Device Boxes, and Covers, UL 514C. 5.2.4 added August 23, 2011 AUGUST 23, 2011 JUNCTION BOXES FOR SWIMMING POOL LUMINAIRES - UL

46、 1241 10UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 6 Gaskets 6.1 A gasket provided between a box and its cover shall be formed of resilient material that has been determined to be resistant to deterioration caused by aging. 6.2 A gasket

47、 of neoprene, rubber, neoprene composition, or rubber composition shall comply with 15.1. 6.3 Other gasket material determined to have equivalent strength and resistance to aging is not prohibited from being used. Such a material, after investigation, shall show no visible evidence of deterioration

48、such as softening, hardening, or cracking after exing. 7 Connections for Wiring 7.1 A hole for the connection of conduit shall be threaded. When the threads are tapped all the way through a hole in an enclosure wall, there shall be at least 3-1/2 threads and not more than ve threads in the metal, an

49、d the construction shall be such that a conduit bushing can be securely attached. When the threads are not tapped all the way through a hole in an enclosure wall, conduit hub, or the like, there shall not be less than ve full threads in the metal, and a smooth, well-rounded inlet hole for the conductors shall be provided to afford protection to the conductors equivalent to that provided by a standard conduit bushing. The hole shall have a throat diameter a