Electrical Supply to Building Sites ~ a supply of electricity is usually
required at an early stage in the contract to provide light and power to
the units of accommodation. As the work progresses power could also
be required for site lighting, hand held power tools and large items of
plant. The supply of electricity to a building site is the subject of a
contract between the contractor and the local area electricity
company who will want to know the date when supply is required; site
address together with a block plan of the site; final load demand of
proposed building and an estimate of the maximum load demand in
kilowatts for the construction period. The latter can be estimated by
allowing 10 W/m^2 of the total floor area of the proposed building plus
an allowance for high load equipment such as cranes. The installation
should be undertaken by a competent electrical contractor to ensure
that it complies with all the statutory rules and regulations for the
supply of electricity to building sites.
The units must be strong, durable and resistant to rain penetration
with adequate weather seals to all access panels and doors. All
plug and socket outlets should be colour coded :- 400 V † red;
230 V † blue; 110 V † yellow.
Electrical Supply to Building Sites