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ABSTRACT
Poor electrical services design can result to risk of fire outbreak due to use of inappropriate cables and size. In the same vain poor estimation of materials and components used in installations can result to poor designs and evaluation of project costs. Therefore this project bids to address these challenges by carrying out proper electrical services design of an office building. To carry out this project, detailed study of electrical services design was carried out and an office complex was used in the study. Lumen method was employed in the calculation for the fittings following an architectural plan provided. An extensive calculation was done on the load balancing and sizing of the various components in line with IEEE standard. Following the calculations, suitable fittings, cable and protection sizing was achieved. The sizes for the main and sub main cables were 95mm2 and 25mm2 . While a generator size of 22KVA was estimated. These and other calculations were in line with IEEE regulations.
