Electrical Supply to Building Sites ~ a supply of electricity is usuallyrequired at an early stage in the contract to provide light and power tothe units of accommodation. As the work progresses power could alsobe required for site lighting, hand held power tools and large items ofplant. The supply of electricity to a building site is the subject of acontract between the contractor and the local area electricitycompany who will want to know the date when supply is required; siteaddress together with a block plan of the site; final load demand ofproposed building and an estimate of the maximum load demand inkilowatts for the construction period. The latter can be estimated byallowing 10W/m2 of the total floor area of the proposed building plusan allowance for high load equipment such as cranes. The installationshould be undertaken by a competent electrical contractor to ensurethat it complies with all the statutory rules and regulations for thesupply of electricity to building sites.

The units must be strong, durable and resistant to rain penetrationwith adequate weather seals to all access panels and doors. Allplug and socket outlets should be colour coded :- 400V red;230V blue; 110V yellow

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Electrical Supply to Building Sites