1、C22.2 No. 79-1978(reaffirmed 2013)Cellular metal and cellular concrete floor raceways 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
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15、orm:sLOADTHISDOCUMENTONTOACOMPUTERFORTHESOLEPURPOSEOFREVIEWINGITsSEARCHANDBROWSETHISDOCUMENTANDsPRINTTHISDOCUMENTIFITISIN0$ moisten only where required. Clause 4.3(c-Revise Clause 4.3(c) as follows: 0) The wording “Minimum concrete thickness 2 1/2 inches Epaisseur minimale du beton 2 1/2 po“, when t
16、he upper section of a unit has a thickness less than 0.0528 inch (No. 16 MSG). Publication Date-January 31, 1983 Effective Date-January 31, 1983 Amendment No.1 Clause 6.2.2-Revise Clause 6.2.2 as follows: 6.2.2 Material and Thickness C22.2 No. 79-1978 6.2.2.1 An enclosed header shall be of sheet ste
17、el having a thickness, before coating, not less than specified in Table 2, dependent upon the intended depth of concrete covering it (dimension t) and its cross-sectional dimensions or area, as illustrated in Figure 1, or if larger, compensated for as in Table 2 (see Clause 6.4(c. Publication Date-J
18、anuary 31, 1983 Effective Date-January 31, 1983 Amendment No.2 C22.2 No. 79-1978 Clause 6.2.2.2 (New)-Add Clause 6.2.2.2 as follows: 6.2.2.2 Notwithstanding Clause 6.2.2.1, an enclosed header that passes the test specified in Clause 7.7 and if of sheet steel having a thickness before coating of not
19、less than 0.0309 inch (20 MSG) may be used, provided the concrete topping is 1 inch and greater and provided the maximum unsupported width does not exceed 8 inches. Publication Date-January 31, 1983 Effeetive Date-January 31, 1983 Amendment No.3 C22.2 No. 79-1978 Clause 7.7-Revise the final sentence
20、 of Clause 7.7 as follows: The permanent deformation, following this test, shall be measured and shall not exceed 1/8 inch (see Clauses 4.1.2.3(b) and 6.2.2.2). Publication Date-January 31, 1983 Effeetive Date-January 31, 1983 Amendment No.4 C22.2 No. 79-1978 Canadian Standards Association Rexdale C
21、22.2 No. 79-1978 Cellular Metal and Cellular Concrete Floor Raceways and Fittings The attached amendment covering Clause 6.1.5 has been formally approved. October, 1984 Note: This is gummed stock; moisten only where required. Clause 6.1.5-Revise this Clause as follows: 6.1.5 Dimensions Except for th
22、e internal height, which shall be not less than 1 inch, no specific dimensions are required by this Standard, but the intended internal cross-sectional area of any wiring compartment shall be uniform through out its length. Amendment No.5 October, 1984 C22.2 No. 79-1978 Canadian Standards Associatio
23、n Rexdale C22.2 No. 79-1978 Cellular Metal and Cellular Concrete Floor Raceways and Fittings The attached amendment covering Clause4.1.2.4(new) has been formally approved. Publication Date-The date on or after which this Standard may, at the discretion of the applicant, be used for certification. Ef
24、fective Date-The date on which this Standard shall be applicable to equipment being submitted for certification and to equipment already certified. July 1986 Note: This is gummed stock; moisten only where required. Renumber present Clause 4.1.2.4 to Clause 4.1.2.5. Clause 4.1.2.4(new)-Add Clause 4.1
25、.2.4 as follows: 4.1.2.4 The maximum flat cell dimension specified in Clause 4.1.2.3 shall be taken as the width of the widest cell, provided the partition(s) creating the cell is (are) permanently secured and is (are) of sufficient height to support the cover. Publication Date-July 31,1986 Effectiv
26、e Date-July 31,1986 Amendment No.6 C22.2 No. 79-1978 Cellular Metal and Cellular Concrete Floor Raceways and Fittings 3 Contents Page 5 Subcommittee on C22.2 No. 79 6 Committee on Canadian Electrical Code, Part n 8 Preface 9 Reference Publications Standard 11 1. Scope 11 2. neimitions 13 3. General
27、Requirements 13 3.1 General 13 3.2 Construction 13 3.3 Grounding 14 4. Cellular Metal Floor Raceway Units (Including Joint Covers and Cell Closures) 14 4.1 Floor Units 14 4.1.1 Method of Fabrication 14 4.1.2 Steel Sheet 14 4.1.3 Dimensions of Units 15 4.1.4 Squareness 15 4.1.5 Centering 15 4.1.6 Wel
28、ding Hole Cover 15 4.2 Joint Covers and End Closures 16 4.3 Marking 16 4.4 Installation Instructions and Accessories 17 5. Cellular Concrete Floor Raceway Units (Slabs) (Including Joint Covers and Cell Closures) 17 5.1 Floor Units 17 5.1.1 Method of Fabrication 17 5.1.2 Concrete 17 5.1.3 Dimensions
29、of Units 17 5.1.4 Squareness 17 5.1.5 Cell Entrance 18 5.1.6 Cell Location 18 5.2 Joint Covers and End Closures 18 5.3 Marking 19 5.4 Installation Instructions 4 CSA Standard C22.2 No. 79-1978 20 6. Fittings 20 6.1 Trench Headers 20 6.1.1 Material 20 6.1.2 Thickness of Metal 20 6.1.3 Partitions 21 6
30、.1.4 Cover Plates 21 6.1.5 Dimensions 21 6.1.6 Fastening 21 6.1.7 Knockouts 21 6.1.8 Bonding Means 21 6.2 Enclosed Headers 21 6.2.1 General 21 6.2.2 Material and Thickness 21 6.2.3 Fabrication 23 6.2.4 Dimensions 23 6.2.5 Tack Weiding 23 6.2.6 Fastening 23 6.2.7 Knockouts 23 6.2.8 Access Units 23 6.
31、3 Miscellaneous Fittings 23 6.3.1 General 23 6.3.2 Fittings 24 6.3.3 Wiring Space 24 6.3.4 Thickness of Metal 25 6.3.5 Provision for Conduit Connections 25 6.3.6 Provision for Connection to Headers 25 6.3.7 Individual Types of Fittings 27 6.4 Marking 28 6.5 Installation Instructions 29 7. Tests 29 7
32、.1 Zinc Coating 29 7.1.1 Sheet Steel 29 7.1.2 Irregularly Shaped Objects 29 7.2 Enamel Coatings 29 7.3 Spot Welding 30 7.4 Bonding 30 7.5 Mechanical Strength (Enclosed, Non-adjustable Headers Only) 30 7.6 Flashover and Accidental Grounding at Receptacles 31 7.7 Load Test 31 7.8 Raceway With Covers F
33、lush With the Finished Concrete Cellular Metal and Cellular Concrete Floor Raceways and Fittings 5 Subcommittee on C22.2 No. 79 C.E. McRoberts (Chairman) Thornhill, Ontario D. Oxley (Vice-Chairman) Powercom Raceways Ltd., Mississauga, Ontario G.W. Brand Corpora tion of the City of Vancouver, Vancouv
34、er, British Columbia D.M. Brotherhood Treis Industries Limited, Markham, Ontario J.C. Clark Robertson Building Systems Ltd., Hamilton, Ontario R.G. Cotton Bell Canada, Toronto, Ontario R.E. Dowling Canadian Standards Association, Rexdale, Ontario K.R. Dunphy Canadian General Electric Company Limited
35、, Toronto, Ontario C.Fung Westeel-Rosco Limited, Toronto, Ontario s. Gordon Sasco Duct, Weston, Ontario W. Kamphorst General Concrete Ltd., Hamilton, Ontario O.W. Knight Ontario Hydro, Toronto A. Lawrence H.K. Porter Company (Canada) Ltd., Woodstock, Ontario M.J. MacNaughton MacNaughton Electric Com
36、pany Limited, Agincourt, Ontario N.W. Purdy Electrical Contractors Association, Toronto, Ontario F. Thorpe Condufloor Canada Limited, Streetsville, Ontario J.F. Morrison (Secretary) Canadian Standards Association, Rexdale, Ontario 6 CSA Standard C22.2 No. 79-1978 Committee on Canadian Electrical Cod
37、e, Part IT D.M. Manson (Chairman) Canadian Standards Association, Rexdale, Ontario G.H. Sprentall (Alternate) Canadian Standards Association, Rexdale, Ontario F.H.M. Boyd (Secretary, Non-voting) Canadian Standards Association, Rexdale, Ontario Representing Regulatory Authorities G.E. Davidson On tar
38、io Hydro, Toronto J.E. Guerrette New Brunswick Department of Labour, Fredericton R.O. Lambert Manitoba Hydro, Winnipeg A.R. Luck British Columbia Ministry of Highways and Public Works, Vancouver R. Morin (Alternate) Ministere du Travail et de la Main-doeuvre, Quebec, Quebec J. Rousseau Quebec Depart
39、ment of Labour and Manpower, Montreal C.M. Speers Alberta Department of Labour, Edmonton Representing Manu acturers (ELectrical and ELectronic Manufacturers Association of Canada) G. Bedingham Motorola Canada Limited, Willowdale, Ontario D.B. Cole Sylvania Electrical Equipment, Scarborough, Ontario
40、K.R. Dunphy Canadian General Electric Company Limited, Toronto, Ontario J.G.C. Henderson Canada Wire and Cable Limited, Toronto, Ontario A.E. Jewett Westinghouse Canada Limited, Hamilton, Ontario G. W. Lawrence Northern Telecom Limited, Montreal, Quebec C.E. McRoberts Federal Pioneer Limited, Toront
41、o, Ontario Representing General Interests J.A. Bossert Department of Energy, Mines and Resources, Ottawa, Ontario Representing Canadian Electrical Code, Part V Cellular Metal and Cellular Concrete Floor Raceways and Fittings I.M. Clark Canadian Electrical Association, Montreal, Quebec Representing C
42、anadian Electrical Association E.F. Johnson Department of Industry, Trade and Commerce, Ottawa, Ontario Representing Federal Department of Industry, Trade and Com merce R.N. Leadbeater Ontario Hydro, Toronto Representing Consumers Association of Canada G.Neal Na tional Research Council of Canada, Ot
43、tawa, Ontario Representing National Research Council E. Pearl Pearl and Russell Limited, Rexdale, Ontario Representing Canadian Electrical Contractors Association M. Polansky Canadian Standards Association, Rexdale, Ontario Representing Canadian Standards Association W.R. Virtue Department of Consum
44、er and Corporate Affairs, Hull, Quebec Representing Federal Department of Consumer and Corporate Affairs Associate Members B.H. Chick Department of Public Works, Ottawa, Ontario P. Douglas British Standards Institution, Hemel Hempstead, Hertfordshire, England D.L. Johnson Health and Welfare Canada,
45、Ottawa, Ontario D.S. Martin Underwriters Laboratories of Canada, Scarborough, Ontario H.P. Michener National Electrical Manufacturers Association, Washington, D.C., U.S.A. Representing American National Standards Institute 7 8 CSA Standard C22.2 No. 79-1978 Preface This is the second edition of No.
46、79 of a series of Standards issued by the Canadian Standards Association under Part II of the Canadian Electrical Code. It supersedes the previous edition published in 1970. This edition includes the following: (a) Incorporation of published revisions (1-17); (b) Addition of and changes in definitio
47、ns; (c) Reference to CSA Standard C22.2 No. 0.4, Bonding and Grounding of Electrical Equipment (Protective Grounding), for bonding and grounding of cellular floor raceway units and fittings; (d) Change in Table 2; (e) Test added for raceway with covers flush with the finished concrete. This Standard
48、 was prepared under the jurisdiction of the Committee on CE Code, Part II, which is subsidiary to the Committee on CE Code, Part I, and was formally approved by these Committees. Rexdale, May, 1978 Note: For general information regarding the Standards of the Canadian Electrical Code, Part II, see th
49、e preface of the latest issue of CSA Standard C22.2 No. 0, Definitions and General Requirements. CSA Publications are subjected to periodic review in order to keep them abreast of progress in the electrical industry. Suggestions for improvement addressed to Canadian Standards Association, 178 Rexdale Boulevard, Rexdale, Ontario M9W lR3, will be welcomed at all times. They will be recorded and in due course
