Introduction to Electrical Installation Work

244 Pages·2011·13.343 MB·English

by  Trevor Linsley

Introduction to
Electrical
Installation
Work
Suitable for the City & Guilds Level 2 2399 Series of
qualifications in Environmental Technology Systems and
the City & Guilds Level 3 2357 qualification in Installing
Electrotechnical Systems.
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Introduction to
Electrical
Installation
Work
Third edition
Covers the knowledge units of the
Level 2. City & Guilds Environmental Technology Systems.
Level 3. City & Guilds Diploma in Installing Electrotechnical Systems.
Trevor Linsley
AMSTERDAM • BOSTON • HEIDELBERG • LONDON • NEW YORK• OXFORD
PARIS • SAN DIEGO • SAN FRANCISCO • SINGAPORE • SYDNEY • TOKYO
Newnes is an imprint of Elsevier
Newnes is an imprint of Elsevier
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First edition 2007
Second edition 2009
Third edition 2011
Copyright © 2011 Trevor Linsley. Published by Elsevier Ltd. All rights reserved.
The right of Trevor Linsley to be identified as the author of this work has been asserted in accordance with
the Copyright, Designs and Patents Act 1988.
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Whilst the advice and information in this book is believed to be true and accurate at the date of going to
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ISBN 978-0-08-096940-4
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11 12 13 14 15 10 9 8 7 6 5 4 3 2 1
Contents
Preface vii
Chapter 1 Working effectively and safely in an electrical environment 1
Chapter 2 Basic principles of electrotechnology 45
Chapter 3 Health and safety application and electrical principles 83
Chapter 4 Installation (building and structures) 131
Chapter 5 Environmental technology systems 187
Solutions to assessment questions 227
Appendix A: Environmental organizations 231
Index 233
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Preface
The THIRD edition of Introduction to Electrical Installation Work is,
as the title implies, a first book of electrical installation practice.
It is designed to be a simple introduction to electrical theory and
practice and, therefore, does not contain any difficult mathematics or
complicated electrical theory.
The book will be of assistance to students taking a first year electrical
course, particularly those taking the City and Guilds Level 2 certificate
in Environmental Systems and the Level 3 Diploma in Installing
Electrotechnical Systems.
Introduction to Electrical Installation Work provides a sound basic
knowledge of electrical practice which will also be valuable to the
other trades in the construction industry who require a knowledge of
electrical installation work, particularly those involved in installing the
new environmental technology systems and multi-skilling activities.
This book incorporates the requirements of the latest regulations,
particularly:
l The 17th Edition IEE Wiring Regulations (BS 7671:2008)
l New Hazardous Waste Regulations 2005
l The New Work at Height Regulations 2005
l The New Part P Building Regulations (Electrical Safety in Dwellings)
2005
l The New (Harmonised) Fixed Cable Core Colours (2006)
The content of this new edition have been updated and expanded to
incorporate the new envirnomental technology subjects in the City
and Guilds examinations. Each chapter concludes with Assessment
Questions in preparation for the City & Guilds On-Line Assessment.
Margin notes identify:
l KEY FACT which identifies important safety information
l FOLLOW THIS MATHS reminds students to follow each step of a
mathematical solution carefully and
l TRY THIS is a student activity which readers may like to respond to
by making notes in the margin.
viii Preface
I would like to acknowledge the assistance given by the following
manufacturers and organisations in the preparation of this book:
Crabtree Electrical Industries Ltd
R.S. Components Ltd
The Institution of Electrical Engineers
The British Standards Institution
The City & Guilds of London Institute
Stocksigns Ltd
Wylex Electrical Components
I would also like to thank the many college lecturers who returned
the questionnaire from Elsevier and the proposal reviewers for their
suggestions and advice during the preparation of this book.
I would also like to thank the editorial and production staff at Elsevier
for responding to the very short time scale created by the publication
of the new City and Guilds qualification.
Finally, I would like to thank Joyce, Samantha and Victoria for their
support and encouragement.
Trevor Linsley
2011
1
C H A P T E R
Working effectively and
safely in an electrical
environment
Online To support your learning, animated versions of some of the figures
from this chapter are viewable for free from the book’s companion site.
Material
When you see the logo, visit the website below to access them:
www.elsevierdirect.com/
companions/9780080969404
This chapter describes the requirements that are essential to enable
electrotechnical activities to be carried out safely and effectively
within the parameters set by the current safety legislation and best
practice related to the electrotechnical industry.
Laws and safety regulations
The construction industry is one of the biggest industries in the
United Kingdom, although most workers are employed by small
companies employing less than 25 people.
The construction industry carries out all types of building work from
basic housing to offices, hotels, schools and airports.
In all of these construction projects the electrotechnical industry plays
a major role in designing and installing the electrical systems to meet
the needs of those who will use the completed buildings.
The construction process is potentially hazardous because of the
temporary nature of the project and many construction sites these
days insist on basic safety standards being met before you are allowed
on site. All workers must wear hard hats and safety boots or safety
Introduction to Electrical Installation Work. 978-0-08-096940-4
Copyright © 2011 Trevor Linsley. Published by Elsevier Ltd. All rights reserved.