CSA C22 2 NO 85-2014 Rigid PVC boxes and fittings (Second Edition).pdf

1、C22.2 No. 85-14Rigid PVC boxes and fittingsLegal Notice for StandardsCanadian Standards Association (operating as “CSA Group”) develops standards through a consensus standards development process approved by the Standards Council of Canada. This process brings together volunteers representing varied

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18、pdate ServiceC22.2 No. 85-14January 2014Title: Rigid PVC boxes and fittingsTo register for e-mail notification about any updates to this publication go to shop.csa.ca click on CSA Update ServiceThe List ID that you will need to register for updates to this publication is 2422721.If you require assis

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20、r without the prior permission of the publisher.Published in January 2014 by CSA Group A not-for-profit private sector organization 5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N6 To purchase standards and related publications, visit our Online Store at shop.csa.caor call toll-fre

21、e 1-800-463-6727 or 416-747-4044.TMA trade-mar k of the Canadian S tandards Association, operating as “CSA Group”Rigid PVC boxes and fittingsC22.2 No. 85-14C22.2 No. 85-14Rigid PVC boxes and fittingsJanuary 2014 2014 CSA Group1ContentsTechnical Committee on Wiring Products 3Subcommittee on ICCM01-No

22、nmetallic Conduit, Tubing and Fittings 5Preface 71 Scope 82 Reference publications and definitions 92.1 Reference publications 92.2 Definitions 93 Construction 93.1 General 93.2 Boxes 103.2.1 Provision for mounting 103.2.2 Attachment of covers and devices 103.2.3 Wall thickness 103.2.4 Provision for

23、 conduit connection 103.2.5 Conduit-connection sockets 103.2.6 Bonding 103.3 Covers 113.4 Fittings 113.4.1 General 113.4.2 Dimensions 113.5 Floor boxes 124 Marking 124.4 Floor boxes 125 Tests 135.1 General 135.2 Water absorption 135.3 Flame 135.4 Dropping of burning particles 135.5 Heat distortion 1

24、45.6 Physical properties 145.7 Flexural strength 165.8 Resistance to crushing 165.8.1 Boxes 165.8.2 Fittings 175.9 Resistance to impact at low temperatures 175.10 Bending 185.11 Pull-out 195.12 Chemical-retardant properties 195.13 Submersion 195.14 Insertion and removal of cover and device holding s

25、crews 20C22.2 No. 85-14Rigid PVC boxes and fittingsJanuary 2014 2014 CSA Group25.15 Elevated temperature pullout and distortion for non-metallic outlet boxes intended to support a fixture/luminaire 205.15.1 Wall boxes 205.15.2 Ceiling boxes 205.16 Resistance to ingress of scrub water for floor boxes

26、 20C22.2 No. 85-14Rigid PVC boxes and fittingsJanuary 2014 2014 CSA Group3Technical Committee on Wiring ProductsK.L. Rodel Hubbell Canada LP, Pickering, OntarioRepresenting Producer InterestChairP. Desilets Leviton Manufacturing of Canada Limited, Pointe-Claire, QubecRepresenting Producer InterestVi

27、ce-ChairW.J. Bryans Electro-Federation Canada, Toronto, OntarioAssociateW.J. Burr Burr and Associates, Campbell River, British ColumbiaRepresenting General InterestC. Davis Electro Cables Incorporated, Trenton, OntarioRepresenting Producer InterestS.W. Douglas International Association of Electrical

28、 Inspectors, Toronto, OntarioRepresenting General InterestD. Drysdale Nexans Canada Inc, Milton, OntarioRepresenting Producer InterestS.P. Hawkins Shawflex A Division of ShawCor Ltd., Toronto, OntarioAssociateR.J. Kelly Government of Nunavut-Dept of Community b) provide an explanation of circumstanc

29、es surrounding the actual field condition; andc) where possible, phrase the request in such a way that a specific “yes” or “no” answer will address the issue.Committee interpretations are processed in accordance with the CSA Directives and guidelines governing standardization and are available on th

30、e Current Standards Activities page at standardsactivities.csa.ca.5) This Standard is subject to review five 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 t

31、o inquiriescsagroup.org and include “Proposal for change” in the subject line:a) Standard designation (number);b) relevant clause, table, and/or figure number;c) wording of the proposed change; andd) rationale for the change.Committee interpretations are processed in accordance with the CSA Directiv

32、es and guidelines governing standardization and are published in CSAs periodical Info Update, which is available on the CSA Web site at www.csa.ca.C22.2 No. 85-14Rigid PVC boxes and fittingsJanuary 2014 2014 CSA Group8C22.2 No. 85-14Rigid PVC boxes and fittings1 Scope1.1 This Standard applies to rig

33、id unplasticized poly (vinyl chloride)* boxes and fittings of the following types that are intended to be installed and used with rigid PVC conduit at a maximum working temperature of 75 C in accordance with the rules of the Canadian Electrical Code, Part I:a) junction boxes with an interior volume

34、of 1640 mL or less that are intended to provide access to wiring and to enclose splices and taps but not to support wiring devices;b) conduit boxes with an interior volume of 1640 mL or less that are intended to be used as pull boxes but not to enclose splices and taps or support wiring devices;c) s

35、urface mounted device boxes with an interior volume of 1640 mL or less that are intended primarily to support wiring devices but may also be used as a pull box or to enclose wiring joints;d) box covers of the blank and device types;e) expansion joints that are intended to compensate for the linear e

36、xpansion of a span of rigid PVC conduit;f) junction box terminal adapters that are intended to connect a length of PVC conduit by an elbow or other bend to a box;g) female adapters that are intended to connect a length of PVC conduit to a length of rigid metal conduit;h) reducers that are intended t

37、o connect lengths of two different sizes of rigid PVC conduit;i) caps that are intended to close the ends of unused lengths of rigid PVC conduit; andj) bell ends that are intended to provide a bushed opening at the open end of a length of rigid PVC conduit.* For convenience, the shorter term PVC is

38、used in this Standard. 1640 mL is the volume of trade size known as 100 cubic inches.1.2 General requirements applicable to this Standard are given in CSA C22.2 No. 0, General Requirements Canadian Electrical Code, Part II.1.3 In this Standard, “shall” is used to express a requirement, i.e., a provi

39、sion that the user is obliged to satisfy in order to comply with the standard; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the standard. Notes accompanying clauses do

40、not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements.C22.2 No. 85-14Rigid PVC boxes

41、 and fittingsJanuary 2014 2014 CSA Group9Annexes are designated normative (mandatory) or informative (nonmandatory) to define their application.2 Reference publications and definitions2.1 Reference publicationsThis Standard refers to the following publications, and where such reference is made, it s

42、hall be to the edition listed below, including all amendments published thereto:CSA GroupC22.1-12Canadian Electrical Code, Part ICAN/CSA-C22.2 No. 0-10General Requirements Canadian Electrical Code, Part IICAN/CSA-C22.2 No. 0.17-00 (R2009)Evaluation of properties of polymeric materialsC22.2 No. 18.2-

43、06 (R2011)Nonmetallic outlet boxesC22.2 No. 211.2-06 (R2011)Rigid PVC (unplasticized) conduit2.2 DefinitionsThe following definitions shall apply in this Standard:Floor box a box mounted in the floor intended for use with a floor box cover or other components to complete the enclosure.Floor box cove

44、r a component of a floor box assembly intended to complete the enclosure.Raised-floor box a floor box intended for use in a raised floor, such as in an electronic computer/data processing equipment room.Recessed access floor box a floor box with provisions for mounting wiring devices below the floor

45、 surface.3 Construction3.1 General3.1.1 The material used to manufacture the boxes and fittings shall be unplasticized PVC.C22.2 No. 85-14Rigid PVC boxes and fittingsJanuary 2014 2014 CSA Group103.1.2 The inner and outer surfaces of boxes and fittings shall be smooth and free from blisters, cracks,

46、and other defects that would obstruct or interfere with their assembly or with the installation of wires and cables. Excess flashings shall be removed from moulded devices.3.1.3 A solvent cement that is suitable for poly(vinyl chloride) shall be available for joining the boxes and fittings to rigid

47、PVC conduit from commercial sources carrying the PVC conduit, boxes, and fittings.3.2 Boxes3.2.1 Provision for mountingAny mounting means that is provided as an integral part of a box shall be such that all metal parts, including the heads of screws or rivets, will be protected from accidental conta

48、ct with any bare live parts within the box. Provision for mounting wiring devices such as switches and receptacles shall be provided in device boxes only.3.2.2 Attachment of covers and devicesThe means of securing a cover to a box shall be separate from that provided for a wiring device. Where screw

49、 mountings are required to attach covers and devices, they shall be tested for the insertion and removal of screws in accordance with Clause 5.14. The location of screws or other metal cover-holding devices shall be such that, if they are accessible outside a covered box, they cannot contact uninsulated live parts or insulated conductors inside the box.3.2.3 Wall thicknessThe thickness of a side, end, or bottom of a box shall comply with Table 1, except that for wall sections that are reinforced, for example with ribs, the thickness may be less t