Guidance Note 2 Isolation & Switching BS 7671:2018+A2:2022, 9th Edition 2022 (PDF)

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About the book:

Publisher: IET
Place of Publication: United Kingdom
Pages: 104
Edition: 2022
Language: English
Size: 50 Mb

Updated to BS 7671:2018+A2:2022 IET Wiring Regulations.

Content:

Cooperating organizations 5
Acknowledgements 6
Preface 7
Introduction 9
Chapter 1 Statutory requirements 11
1.1 General 11
1.2 Statutory regulations 11
1.2.1 The Health and Safety at Work etc. Act 1974 11
1.2.2 The Electricity at Work Regulations 1989 (EAWR) 11
1.2.3 The Electricity Safety, Quality and Continuity Regulations (ESQCR) 13
1.2.4 The Machinery Directive 13
1.2.5 The Electrical Equipment (Safety) Regulations 2016 17
1.2.6 The Construction (Design and Management) Regulations 2015 17
1.2.7 The Management of Health and Safety at Work Regulations 1999 and the Management of Health and Safety at Work (Amendment) Regulations 2006 20
1.2.8 The Workplace (Health, Safety and Welfare) Regulations 1992 20
1.2.9 The Provision and Use of Work Equipment Regulations 1998 20
1.2.10 The Regulatory Reform (Fire Safety) Order 2005 21
1.2.11 Building Regulations Approved Document M (England and Wales) 22
1.2.12 Building Standards Technical Handbook - Domestic (Scotland) 23
Chapter 2 Overview of the Wiring Regulations 25
Chapter 3 Definitions and principles 29
3.1 General 29
3.2 Isolation 34
3.3 Switching off for mechanical maintenance 35
3.4 Emergency switching 3 6
3.5 Emergency stopping 37
3.6 Functional switching 37
3.7 Ordinary, instructed and skilled persons 3 8
3.8 Definitions from other standards 39
3.9 General requirements for warning signs and labelling 44
Chapter 4 Isolation 45
4.1 General 45
4.2 Isolation at the origin of an installation 46
4.3 Isolation of circuits within an installation 50
4.4 Devices for isolation and securing isolation 52
4.5 Isolation requirements for particular types of equipment 5 6
4.5.1 Generators 56
4.5.2 Motors 5 8
4.5.3 Water heaters 59
4.5.4 Transformers 59
4.5.5 Photovoltaic installations 59
4.5.6 Outdoor (amenity) lighting installations, highway power supplies and street furniture 59
4.5.7 Fire alarm systems 60
Chapter 5 Switching off for mechanical maintenance 61
5.1 General 61
5.2 Devices for switching off for mechanical maintenance 61
Chapter 6 Emergency switching and emergency stopping 63
6.1 General 63
6.2 Devices for emergency switching 63
Chapter 7 Functional switching 65
7.1 General 65
7.2 Functional switching devices 65
7.3 Control (auxiliary) circuits 6 6
7.4 Motor control 6 6
Chapter 8 Firefighters' switches 67
8.1 General 67
8.2 Location and identification 68
Chapter 9 Special installations or locations 71
9.1 General 71
9.2 Construction sites 71
9.3 Agricultural and horticultural premises 71
9.4 Marinas 72
9.5 Exhibitions, shows and stands 73
9.6 Solar photovoltaic (PV) power supply systems 73
9.7 Caravans and motor caravans 74
9.8 Electric vehicle charging installations 75
9.9 Structures, amusement devices and booths at fairgrounds, amusement parks and circuses 75
Chapter 10 Prosumer's low-voltage electrical installations 77
Appendix A Safety service and product standards of relevance to this Guidance Note 79
Appendix B Safe isolation procedures 83
Appendix C Permit-to-Work procedures 87
Appendix D Safety locks and group lock boxes 91
Appendix E Forms of separation for LV switchgear 93
E1 Fundamental objectives of separation 93
Index 97

Tags: Guidance Note 2 Isolation & Switching A2:2022, Guidance Note 2-A2:2022 pdf, Isolation & Switching 2022 pdf