Electric Power Distribution and Management System Audit of a 4-storey School Building in Davao City

Abstract

This study evaluated the electric power distribution of a 4-storey School Building in Davao City. The researcher aimed to determine the present electrical load distribution, voltage drop calculations, and connection of the building, identify the maximum current per conductor at the main and sub-feeder circuits, determine the short circuit interrupting capacity, and conduct a coordination study. Moreover, to know if the building complies with the Philippine Electrical Code or PEC standards for its electrical system’s main and sub-feeder circuits in terms of the type and size of wire used. The study used the electrical installation audit per the standard of the PEC and identified the PEC Table's set of standards for the allowable ampacity of insulated copper conductors, and it suggested that any circuit branch must have 80 percent of the maximum ampacity and 20 percent spare current capacity for future load increases. The study’s findings indicated that the PEC’s referenced standard needs to be met by any main and sub-feeder circuit lines of the electric power distribution system of a 4-storey School Building as it surpassed its maximum current capacity. These findings emphasized the necessity of adhering to PEC standards and regulations in electrical system design, installation, and maintenance. Nonconformance could seriously compromise buildings' electrical safety, reliability, and energy efficiency. Overall, this study contributes to quality practices and corrective actions in electrical installations and is a good resource for decision-making in the building’s power system and energy management.