Download Wiring Matters- IET 2009 Winter Publication PDF

TitleWiring Matters- IET 2009 Winter Publication
TagsElectrical Wiring Cable Lighting Incandescent Light Bulb Efficient Energy Use
File Size5.4 MB
Total Pages28
Document Text Contents
Page 1


The Institution of Engineering and Technology


Future developments in

Supplies to
electric vehicles

Energy effi cient lighting in
domestic premises

How to meet the requirements of
the Building Regulations

The use of
“Arctic” cable

Cable for use at

Types of person and the
requirements of the Regulations

Examining skills and

Page 14

IET Wiring Matters | Winter 09

12 | Types of person and the requirements

electrician, electrical fitter,
technician or the like.
However it should always be

borne in mind that there are
many aspects in which
persons may be skilled within
a particular occupation and as
such when a person considers
their suitability or that of their
staff to perform particular tasks
they should be considering
whether the required skills are
possessed in order to complete
the task in hand properly and
safely. An electrician for
example who since their initial
training has always worked in
domestic premises and is fully
conversant with the range of
activities typical to such
premises may be completely
out of their depth if placed in
an industrial or commercial
installation. Similarly although
many of the skills picked up by
an electrician during their
training and day-to-day work
experience will be transferable
to new situations it may on
occasion be necessary for
additional skills to be learned
to enable particular specialised
equipment to be installed

and/or maintained; or to attend
subject updating activities in
order to refresh or update their
knowledge. This brings us to
the issue of competency.

The publication of the 17th
Edition saw the introduction of a
definition of competent person:

Competent person. ��������
"�������������� ��������
� ������������������

"���� �����


������� �$

The wording of this definition is
very closely based upon the
content of Regulation 16 of the
Electricity at Work Regulations
1989 and the guidance
provided on this regulation by
the Health and Safety Executive
in their publication HSR25
�� ������ ��
��� �
����������. It is very
similar to the definition of skilled

person. Regulation 16 of EWR
1989 is reproduced below:



������� �$�� ��������
����������� ������"��������
�#���������������� ������ ��
����������� ���!������
� ����������"����

Looking at this it can be seen
that Regulation 16 recognises
that competency may be
achieved from an individual
having sufficient knowledge and
experience to avoid danger or
injury, or from their being
supervised to some extent by
someone having such
knowledge and experience. As
such it can be seen that either a
skilled or an instructed person
and indeed even an ordinary
person may, in some
circumstances, be considered
to be competent.
However an extremely

important aspect of

competency, too frequently
overlooked, is the need for
persons to know the limits of
their ability and technical
knowledge. This failure is
clearly demonstrated by the
unacceptably high number of
deaths and injuries that occur
to persons employed to work on
or near electrical installations
and persons under their control
or indeed to persons using
installations designed or
installed by someone purported
to be competent. It is inevitable
that a person will experience
new situations, products and
working practices in the course
of their career, however they
must always work within their
limits and where necessary
either complete the necessary
subject updating or engage the
services of a specialist
possessing the required
competencies to carry out the
work on their behalf.
In the next edition of ������

����s we will look at
particular requirements within
BS 7671 where the type of
person involved is of some
significance. n

Capability of persons

BA1 Ordinary Uninstructed persons

BA2 Children Children in locations intended for their occupation Nurseries Requirement for inaccessibility of
NOTE - This class does not necessarily electrical equipment. Limitation of
apply to family dwellings temperature of accessible surfaces

BA3 Handicapped Persons not in command of their Hospitals Requirement for inaccessibility of
physical and/or intellectual abilities electrical equipment. Limitation of
(sick person, old persons) temperature of accessible surfaces

BA4 Instructed Persons adequately advised or supervised Electrical operating areas
by skilled persons to enable them to avoid
dangers which electricity may create
(operating and maintenance staff)

BA5 Skilled Persons with technical knowledge Closed electrical operating areas
knowledge or sufficient experience
to enable them to avoid dangers
which electricity may create
(engineers and technicians)

Extract from Appendix 5 of BS 7671 (Concise list of external influences)

Page 15

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Page 27

The Institution of Engineering and Technology is registered as a Charity in England & Wales (no 211014) and Scotland (no SCO38698)

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Page 28


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