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Study of primary power distribution system and its secondary source in a building

Site visit and building description

This assignment requires a detailed study of ANY building primary power distribution system and its secondary source to be provided in a building to meet the local code requirements. The choice of building can be either low-rise or high-rise buildings. The selected building can be residential, office, retails, service apartments or commercial buildings. The typical building single line diagrams (SLDs) Figure 1 & Figure 2 is enclosed for your study purposes. You are NOT required to gain access to the consumer electrical switch room due to SAFETY reasons

Your report should include but not restricted to the following: 

(a) A site visit to the building with full address, general description of the building type, overview of power reticulation basing on the provided SLD, the number of storeys and height of the building must be clearly described and supported with photographic evidence. 

(b) Identify the HV (if applicable) and LV electrical distribution scheme in your study. Your focus should be on the operation and ease of maintenance of the buildings and meeting the local code requirements. You should describe these systems in detail and state the consideration in the selection of the electrical components. i.e. choice of breakers, sizing of busbars, accessories etc. Support your findings with properly labelled photographs and sketches etc. You should include references to relevant codes/ regulations, its operational requirement and maintenance aspect. In additional, your comment on the choice of equipment and system selection is required in the report. The evaluation of the safety in the building shall be study in this exercise. 

(c) Identify the emergency power provision such as generators / UPS sources / Photovoltaic system (if any) in your study. The study should be closely related to the operation and maintenance of the buildings and meeting the local code requirements. You should describe these systems in detail and state the consideration in the selection of the electrical components. i.e. the busduct, transformer, main switchboard, lighting, ATS changeover switching, choice of breakers and its accessories etc. You should include references to relevant codes/ regulations, its operational requirement and maintenance aspect.

Properly numbered and labelled photographs, sketches and/or illustration should be presented to support your findings and elaborate on the main electrical system and major equipment.

(d) Identify and describe the choice of power supply received from the Utilities Companies, i.e. HV or LV and its associated equipment installed in the building. Describe the electrical connection to the Grid’s network in term of time, engagement of the appropriate personnel such as LEWs, electrical licensing requirement and its procedures that had fulfilled the requirements of the relevant codes of practice. 

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