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IET Guidance Note 2 Isolation and Switching 8th Edition 2019 (PDF)

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About the book

8th edition 2019 (incorporating BS 7671:2018)
Pages: 103
Publisher: IET
Language: English;
Size: 145 Mb;

This Guidance Note is part of a series issued by the Institution of Engineering and Technology to explain and enlarge upon the requirements in BS 767i:20i8, the 18th Edition of the IET Wiring Regulations. All references to BS 7671 in the text of this Guidance Note are references to the current 18th Edition of BS 7671 unless otherwise

This Guidance Note is concerned primarily with Chapter 46 and Section 537 and those other parts of BS 7671 which relate to isolation, switching and control including provision of information and labellings. Requirements relating to isolation and switching in particular types of installation and for specific items of installed equipment are also covered.


1.1 - General
Statutory regulations
1.2.1 The Health and Safety at Work etc. Act 1974
1.2.2 The Electricity at Work Regulations 1989
1.2.3 The Electricity Safety, Quality and Continuity Regulations
1.2.4 The Machinery Directive
1.2.5 The Electrical Equipment (Safety) Regulations 2016
1.2.6 The Construction (Design and Management) Regulations 2015
1.2.7 The Management of Health and Safety at Work Regulations 1999
1.2.8 Workplace (Health, Safety and Welfare) Regulations 1992
1.2.9 The Provision and Use of Work Equipment Regulations 1998
1.2.10 The Regulatory Reform (Fire Safety) order 2005
1.2.11 Building Regulations Approved Document M
Chapter 2 Overview of the Wiring Regulations
Chapter 3 Definitions and principles
3.1 General
3.2 Isolation
3.3 Switching off for mechanical maintenance
3.4 Emergency switching
3.5 Emergency stopping
3.6 Functional switching
3.7 Ordinary, instructed and skilled persons
3.8 Definitions from other standards
3.9 General requirements for warning signs and labeling
Chapter 4 Isolation
4.1 General
4.2 Isolation at the origin of an installation
4.3 Isolation of circuits within an installation
4.4 Devices for isolation and securing isolation
4.5 Isolation requirements for particular types of equipment
4.5.1 Generators
4.5.2 Motors
4.5.3 Water heaters
4.5.4 Transformers
4.5.5 Photovoltaic; installations
4.5.6 Outdoor (amenity) lighting installations, highway power supplies and street furniture
4.5.7 Fire alarm systems
Chapter 5 Switching off for mechanical maintenance
5.1 General
5.2 Devices for switching off for mechanical maintenance
Chapter 6 Emergency switching and emergency stopping
6.1 General
6.2 Devices for emergency switching
Chapter 1 Functional switching
7.1 General
7.2 Functional switching devices
7.3 Control (auxiliary) circuits
7.4 Motor control
7.5 Chapter 8 Firefighters' switches
8.1 General
8.2 Location and identification
8.3 Chapter 9 Special installations or locations
9.1 General
9.2 Construction sites
9.3 Agricultural and horticultural premises
9.4 Marinas
9.5 Exhibitions, shows and stands
9.6 Solar photovoltaic (PV) power supply systems
9.7 Caravans and motor caravans
9.8 Structures, amusement devices and booths at fairgrounds, amusement parks and circuses
Appendix A Safety service and product standards of relevance to this Guidance Note
Appendix B Safe isolation procedures
Appendix C Permit-to-work procedures
Appendix D Safety locks
Appendix E Forms of separation for LV switchgear

Tags: Guidance Note 2, Isolation and Switching book, Isolation and Switching pdf, Isolation and Switching 8th edition

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