wiring regulations in brief pdf

About the author

Ray Tricker (MSc, IEng, FIET, FCMI, FIQA, FIRSE) is the Principal Consultant of
Herne European Consultancy Ltd – a company specialising in ISO 9000 Management
Systems- is also an established Butterworth-Heinemann author (18 titles). He served
with the Royal Corps of Signals (for a total of 37 years) during which time he held various managerial posts culminating in being appointed as the Chief Engineer of NATO’s
Communication Security Agency (ACE COMSEC).


The Industrial Revolution during the 1800s was responsible for causing poor
living and working conditions in ever-expanding, densely populated urban
areas. Outbreaks of cholera and other serious diseases (through poor sanitation, damp conditions and lack of ventilation) forced the government to take
action. Building control took on the greater role of health and safety through
the first Public Health Act in 1875 and this eventually led to the first set of
national building standards (i.e. The Building Regulations).
As is the case with most official documents, as soon as they were published,
they were almost out of date and consequently needed revising.

So it wasn’t
too much of a surprise to learn that the committee responsible for writing the
Public Health Act of 1875 had overlooked the increased use of electric power
for street lighting and for domestic purposes.

Electricity was beginning to become
increasingly popular but, as there were no rules and regulations governing their
installation at that time, the companies or person responsible simply dug up the
roads and laid the cables as and where they felt like it!
From a health and safety point of view the government of the day expressed
extreme concern at this exceedingly dangerous situation and so in 1882
The Electric Lighting Clauses Act (modelled on the previous 1847 Gas Act)
was passed by Parliament. This legislation was implemented by ‘Rules and
Regulations for the prevention of Fire Risks Arising from Electric Lighting’
and it is this document that is the forerunner of today’s IEE Wiring Regulations.
Since then, this document has seen a succession of amendments, new editions
and new titles and is now the well-known and respected 16th Edition of
the IEE Wiring Regulations (i.e. BS 7671: 2000 Requirements for Electrical

Chapter 1

The background to BS 7671, what it contains and a
Introduction description of its unique numbering system, objectives
and legal status.

The effect that the Wiring Regulations
have on other Regulations and how this British
Standard can be implemented.

Chapter 2

The requirements of the Building Act 1984, the
Domestic buildings Building Regulations: 2000 and their Approved
Documents (which provide guidance for conformance)
and how these Building Control Regulations interrelate
with the Wiring Regulations.

A résumé of the responsibilities for electrical installations. The types of
inspections and tests that have to be completed
and the requirements for records.

The contents of
Approved Document P for electrical safety and other
relevant Approved Documents (such as those for Fire
Safety, Access and Facilities for Disabled People,
Conservation of Fuel and Power, Resistance to the
Passage of Sound etc.) together with a listing of all the
most important requirements that directly concern
electrical installations.
Chapter 3

In this chapter you will find a list all of the mandatory
Mandatory and the more essential requirements for the design,
requirements installation and maintenance of safe electrical installations that are called up in the Wiring Regulations and
the Building Regulations.

As this chapter is primarily
intended for reference purposes, explanations have
been kept to an absolute minimum as more detail
is available elsewhere in this book and/or other

Chapter 4 This chapter reminds the reader about the different
Earthing types of earthing systems and earthing arrangements.
It then lists the main requirements for safety protection
(direct and indirect contact), protective conductors and
protective equipment before briefly touching on the
test requirements for earthing.

Chapter 5 Currently Chapter 32 of the Regulations concerning
External influences external influences is still under development and is,
therefore, at too early a stage for adoption as the basis
for a national standard.

It is anticipated that full details
will be included in future revisions of this standard, but
in advance of the eventual publication of Chapter 32, a
list of external influences and their characteristics have
been included as an appendix (i.e. Appendix 5) to the
Meanwhile, the BS EN 60721 series of standards on
environmental conditions has been available for some
time and, in the absence of any ‘official’ regulations
from BSI/IEC, Chapter 5 provides guidance on external influences.

Also included in this chapter are
extracts from the current Regulations that have an
impact on the environment.
Chapter 6 The amount of different types of equipment,
Electrical components, accessories and supplies for electrical
equipment, installations currently available is enormous and any
components, attempt to cover every type, model and/or manufacture
accessories and would prove an impossible task for a book such as this.
supplies The intention of this chapter, therefore, is to provide a
catalogue of all the different types identified and
referred to in the Wiring Regulations (e.g. luminaries,
RCDs, plugs and sockets etc.) and then make a list
of the specific requirements that are sprinkled
throughout the Regulations.

For your convenience
this catalogue has been compiled in alphabetical