CSA OESC-2012 Ontario Electrical Safety Code (Edition 25).pdf

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1、Ontario ElectricalSafety Code25th Edition / 2012This publication contains the complete text of CSA C22.1-12,Canadian Electrical Code, Part I (22nd edition), and OntarioAmendments to that Code.The Canadian Standards Association (CSA) prints its publications on Rolland Enviro100, which contains 100% r

2、ecycled post-consumer fibre, is EcoLogo and Processed Chlorine Free certified, and was manufactured using biogas energy.100%NOTICEThe Ontario Electrical Safety Code (the “Code”) provides the minimum electrical standards required by law for the province of Ontario through regulation contained in Part

3、 VIII of the Electricity Act. The Code incorporates Part I of the Canadian Electrical Code developed under the jurisdiction of the Strategic Steering Committee on Requirements for Electrical Safety operating under the authority of the Canadian Standards Association (“CSA”) Policy Board and in accord

4、ance with CSA policy governing standardization. CSA is a private not-for-profit company that publishes voluntary standards and related documents. CSA has no power, nor does it undertake to enforce compliance with the contents of the standards or other documents it publishes. CSA develops the standar

5、ds contained within the Canadian Electrical Code through a consensus standards development process approved by the Standards Council of Canada. This process brings together volunteers representing varied viewpoints and interests to achieve consensus and develop the standards. Although CSA administer

6、s the process and establishes rules to promote fairness in achieving consensus, it does not independently test, evaluate, or verify the content of standards.Disclaimer CSA accepts no responsibility whatsoever arising in any way from the use of or reliance on the information contained in the Code and

7、 makes no representations, warranties, or conditions of any kind, express or implied, including, without limitation, implied warranties or conditions concerning this documents fitness for a particular purpose or use, its merchantability, or its non-infringement of any third partys intellectual prope

8、rty rights. CSA does not warrant the accuracy, completeness, or currency of any of the information published in this document and makes no representations or warranties regarding this documents compliance with any applicable statute, rule, or regulation. In no event shall CSA, its volunteers, member

9、s, subsidiaries, or affiliated companies, or their employees, directors, or officers, be liable for any direct, indirect or incidental damages, injury, loss, costs or expenses however caused, including but not limited to, special or consequential damages, lost revenue, business interruption, lost or

10、 damaged data or any other commercial or economic loss howsoever caused irrespective of whether CSA is advised of the possibility of such damages, injury, loss, cost or expense. Copyright CSA reserves all rights in regard to the standards contained within the Code, including but not limited to copyr

11、ight, trademarks and all inventions and trade secrets, whether or not such inventions or trade secrets are protected by patents or applications for patents. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanica

12、l, photocopying, recording, or otherwise, without the prior written permission of the publisher. Although the material in this document has been carefully prepared, CSA accepts no responsibility for errors occurring during or resulting from the printing process and/or errors arising out of modificat

13、ion to the information contained herein. Patent RightsAttention is drawn to the possibility that some of the elements of the standards may be the subject of patent rights. CSA shall not be held responsible for identifying any or all such patent rights. Users of the standards are expressly advised th

14、at determination of the validity of any such patent rights is entirely their own responsibility.Published in January 2012 by Canadian Standards AssociationA not-for-profit private sector organization5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N61-800-463-6727 416-747-4044Ontario

15、Electrical Safety Code(Twenty-fifth edition)consistingofCSA C22.1-12Canadian Electrical Code, PartISafety Standard for Electrical Installations(Twenty-second edition)ANDOntario Amendments to CSA C22.1-12, CanadianElectrical Code, Part I Trademark of Canadian Standards AssociationThe Canadian Electri

16、cal Code, Part I, is a voluntary code for adoption and enforcement by regulatory authorities.The Canadian Electrical Code, Part I, meets the fundamental safety principles of International Standard IEC 60364-1, Low-voltage electrical installations.Consult with local authorities regarding regulations

17、that adopt and/or amend this Code.ISBN 978-1-55491-802-7Ontario Amendments Electrical Safety Authority Canadian Standards Association 2012All rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permission of the publisher.CE Code, Part I CSA / Onta

18、rio Electrical Safety Code ESA iiiOntario Electrical Safety CodeContentsCommittee on Canadian Electrical Code, Part I xRegulatory Authority Committee xiiOntario Provincial Code Committee xiiiExecutive Committee xiiiNational Building Code/Canadian Electrical Code Liaison Committee xivSection Subcommi

19、ttees xivPreface to the 25thedition of the Ontario Electrical Safety Code xxviiPreface xxviiThe history and operation of the Canadian Electrical Code, Part I xxviiiMetric units xxixReference publications xxxiSection 0 Object, scope, and definitions 1Object 1Scope 1Definitions 1Section 2 General Rule

20、s 14Administrative 14Section 2 General Rules 21Administrative 21Technical 22General 22Protection of persons and property 25Maintenance and operation 25Enclosures 26Section 3 Field evaluation of electrical equipment 28Section 4 Conductors 29Section 6 Services and service equipment 36Scope 36General 3

21、6Control and protective equipment 37Wiring methods 39Metering equipment 40Section 8 Circuit loading and demand factors 42Scope 42General 42Services and feeders 44Branch circuits 46Automobile heater receptacles 47Section 10 Grounding and bonding 48Scope and object 48System and circuit grounding 48Gro

22、unding connections for systems and circuits 49Conductor enclosure bonding 50Equipment bonding 51Methods of grounding 53Bonding methods 54Grounding electrodes 56Grounding and bonding conductors 57Grounding and bonding conductor connections 59Lightning arresters 60Installation of neutral grounding dev

23、ices 61Ontario Electrical Safety Codeiv CE Code, Part I CSA / Ontario Electrical Safety Code ESASection 12 Wiring methods 63Scope 63General requirements 63Conductors 65General 65Open wiring 67Exposed wiring on exteriors of buildings and between buildings on the same premises 68Bare busbars and riser

24、s 70Non-metallic-sheathed cable 70Armoured cable 71Mineral-insulated cable, aluminum-sheathed cable, and copper-sheathed cable 73Flat conductor cable Type FCC 74Raceways 76General 76Rigid and flexible metal conduit 78Rigid PVC conduit 79Rigid Types EB1 and DB2/ES2 PVC conduit 80Rigid RTRC conduit 81

25、Liquid-tight flexible conduit 82Electrical metallic tubing 82Electrical non-metallic tubing 83Surface raceways 84Underfloor raceways 84Cellular floors 85Auxiliary gutters 86Busways and splitters 87Wireways 88Cable trays 89Cablebus 91Manufactured wiring systems 92Installations of boxes, cabinets, out

26、lets, and terminal fittings 92Section 14 Protection and control 97Scope 97General requirements 97Protective devices 98General 98Fuses 100Circuit breakers 101Control devices 101General 101Switches 103Protection and control of miscellaneous apparatus 104Solid-state devices 104Section 16 Class 1 and Cl

27、ass 2 circuits 106General 106Class 1 circuits 106Class 2 circuits 107Section 18 Hazardous locations 111Scope and introduction 111General 112Class I locations 116Installations in Class I, Zone 0 locations 116Installations in Class I, Zone 1 locations 116Installations in Class I, Zone 2 locations 119C

28、E Code, Part I CSA / Ontario Electrical Safety Code ESA vOntario Electrical Safety CodeClass II locations 121Installations in Class II, Division 1 locations 121Installations in Class II, Division 2 locations 123Class III locations 126Installations in Class III, Division 1 locations 126Installations

29、in Class III, Division 2 locations 128Section 20 Flammable liquid and gas dispensing and service stations, garages, bulk storage plants, finishing processes, and aircraft hangars 130Gasoline dispensing and service stations 130Propane dispensing, container filling, and storage 131Compressed natural g

30、as refuelling stations, compressors, and storage facilities 132Commercial garages Repairs and storage 133Residential storage garages 134Bulk storage plants 134Finishing processes 136Aircraft hangars 139Section 22 Locations in which corrosive liquids, vapours, or excessive moisture are likely to be p

31、resent 141General 141Equipment 141Wiring 142Drainage, sealing, and exclusion of moisture and corrosive vapour 143Circuit control 143Materials 143Bonding 143Sewage lift and treatment plants 144Section 24 Patient care areas 146Patient care areas 147Isolated systems 149Essential electrical systems 150S

32、ection 26 Installation of electrical equipment 152General 152Isolating switches 153Circuit breakers 153Fuses and fusible equipment 153Capacitors 153Transformers 155Fences 159Electrical equipment vaults 160Cellulose nitrate film storage 160Panelboards 161Lightning arresters 161Low-voltage surge prote

33、ctive devices 162Storage batteries 162Arc lamps 163Resistance devices 163Receptacles 164Receptacles for residential occupancies 165Branch circuits for residential occupancies 167Electric heating and cooking appliances 168Bare element water heaters 170Heating equipment 170Pipe organs 170Submersible p

34、umps 171Data processing 171Ontario Electrical Safety Codevi CE Code, Part I CSA / Ontario Electrical Safety Code ESASection 28 Motors and generators 172Scope 172General 172Wiring methods and conductors 173Overcurrent protection 174Overload and overheating protection 176Undervoltage protection 177Con

35、trol 177Disconnecting means 178Hermetic refrigerant motor-compressors 180Multi-winding and part-winding-start motors 181Protection and control of generators 182Section 30 Installation of lighting equipment 183General 183Location of lighting equipment 184Installation of lighting equipment 184Wiring o

36、f lighting equipment 186Luminaires in buildings of residential occupancy 187Lampholders 188Electric-discharge lighting systems operating at 1000 V or less 188Electric-discharge lighting systems operating at more than 1000 V 189Recessed luminaires 190Permanent outdoor floodlighting installations 191E

37、xposed wiring for permanent outdoor lighting 194Extra-low-voltage lighting systems 195Section 32 Fire alarm systems, fire pumps, and carbon monoxide alarms 196Fire alarm systems 196Fire pumps 197Section 34 Signs and outline lighting 199General requirements 199Enclosures 200Neon supplies 200Wiring me

38、thods 201Section 36 High-voltage installations 203General 203Wiring methods 204Control and protective equipment 206Grounding and bonding 207Section 38 Elevators, dumbwaiters, material lifts, escalators, moving walks, lifts for persons with physical disabilities, and similar equipment 211Elevators 21

39、2Escalators 214Lifts for persons with physical disabilities 214Section 40 Electric cranes and hoists 219Section 42 Electric welders 221General 221Transformer arc welders 221Motor-generator arc welders 222Resistance welders 222Section 44 Theatre installations 224Scope 224General 224Fixed stage switch

40、boards 224CE Code, Part I CSA / Ontario Electrical Safety Code ESA viiOntario Electrical Safety CodePortable switchboards on stage 225Fixed stage equipment 225Portable stage equipment 227Section 46 Emergency power supply, unit equipment, exit signs, and life safety systems 228General 228Emergency po

41、wer supply 229Unit equipment 230Exit signs 230Section 48 DeletedSection 50 Solar photovoltaic systems 231Section 52 Diagnostic imaging installations 234Section 54 Community antenna distribution and radio and television installations 236Community antenna distribution 236Protection 237Grounding 238Con

42、ductors within buildings 238Equipment 239Conductors outside of buildings 239Underground circuits 240Receiving equipment and amateur transmitting equipment 241Grounding for receiving equipment and amateur transmitting equipment 241Transmitting stations 242Section 56 Optical fiber cables 243Scope 243G

43、eneral 243Installation methods 243Section 58 Passenger ropeways and similar equipment 245Scope 245General 245General requirements 245Conductors 246Wiring methods 246Protection and control 247Branch circuits 248Regenerative power 248Section 60 Electrical communication systems 249Scope 249General 249P

44、rotection 249Inside conductors 250Equipment 252Outside conductors 252Underground circuits 254Grounding 254Section 62 Fixed electric space and surface heating systems 256Scope 256General 256Electric space-heating systems 260Electric surface heating systems 262Other heating systems 264Ontario Electric

45、al Safety Codeviii CE Code, Part I CSA / Ontario Electrical Safety Code ESASection 64 Renewable energy systems 265General 267Inverters 270Stationary fuel cell systems 272Small wind systems 273Large wind systems 275Micro-hydropower systems 276Hydrokinetic power systems 277Storage batteries 278Section

46、 66 Amusement parks, midways, carnivals, film and TV sets, TV remote broadcasting locations, and travelling shows 280Scope and application 280General 280Grounding 280Services and distribution 281Wiring methods and equipment 281Single-conductor cables 281Motors 282Section 68 Pools, tubs, and spas 283

47、Scope 283General 283Permanently installed swimming pools 286Storable swimming pools 287Hydromassage bathtubs 287Spas and hot tubs 287Section 70 Electrical requirements for factory-built relocatable structures and non-relocatable structures 289Scope 289Relocatable structures 289Non-relocatable struct

48、ures (factory-built) 293Section 72 Mobile home and recreational vehicle parks 294Scope and application 294General 294Section 74 Airport installations 296Section 75 Installation of lines and wiring of buildings 298Poles 299A) General 299B) Wood poles 300C) Steel poles 300D) Concrete poles 301E) Fibre

49、-reinforced polymer poles 301Framing 301Anchors and guys 301Insulators 303Conductors 303Spans and sags 304Clearances 304Grounding and bonding 305Services 306Pole-mounted luminaires, roadway lighting systems 307Section 76 Temporary wiring 308CE Code, Part I CSA / Ontario Electrical Safety Code ESA ixOntario Electrical Safety CodeSection 78 Marinas, yacht clubs, marine wharves, structures, and fishing harbours 310Marinas and yacht clubs 310Marine wharves, structures, and f