A large electrical installation may require many meetings with the cus-
tomer and his her professional representatives order identify a
specification what required. The designer can then identify the general
characteristics the electrical installation and its compatibility with other
services and equipment, indicated Part the Regulations.
It common practice ask number electrical contractors tender
or submit price for work specified the bill quantities.
.
To complete the contract the specified time the electrical contractor must
use the management skills required any business ensure that men and
materials are site and when they are required.
Finally, consumer commercial electronics allows live our modern life
of rapid personal communication systems while listening popular or
classical music and watching wide screen television. The
designer may professional technician engineer whose only job to
design electrical installations for large contracting firm. assessment
of the frequency and quality the maintenance expected (Chapter
34 the IEE Regulations) will give indication the type installation
which most appropriate.
The size and quantity all the materials, cables, control equipment and
accessories can then determined.
The specification for the chosen wiring system will largely determined
by the building construction and the activities carried out the
completed building. The contrac-
tor must cost all the materials, assess the labour cost required install the
materials and add profit and overhead costs order arrive final
estimate for the work.
Designing electrical installation
The designer electrical installation must ensure that the design meets
the requirements the IEEWiring Regulations for electrical installations and
any other regulations which may relevant particular installation. The designer any electrical installation the
person who interprets the electrical requirements the customer within the
regulations, identifies the appropriate types installation, the most suitable
methods protection and control and the size cables used. alterations modi-
fications are made the electrical installation the work proceeds which
are outside the original specification, then variation order must issued
so that the electrical contractor can paid for the additional work. smaller firm,
the designer may also the electrician who will carry out the installation to
the customer’s requirements.52
Basic Electrical Installation Work
Electrical machine drive installations drive everything that makes our mod-
ern life comfortable, from trains and trams lifts and air conditioning units. The contractor tendering the lowest cost usually,
but not always, awarded the contract. This called ‘bill quantities’. The pro-
tection and safety the installation, and those who will use it, must be
considered, with due regard Part the Regulations
