Electrical System Design of a 15-Storey Hotel in Alabang, Muntinlupa City

Abstract

This paper presents the comprehensive electrical system design for a 15-Storey Hotel located in Alabang, Muntinlupa City. The study focuses on creating a design that is safe, reliable, and cost-effective, adhering to the Philippine Electrical Code (PEC) and international standards (IEEE/NEC). The scope encompasses load computation, transformer sizing, and advanced system studies including harmonic analysis, short circuit calculations, protection coordination, and arc-flash hazard analysis. The system employs a 2000 kVA pad-mounted oil-type transformer stepping down 34.5 kV utility power to 0.230 kV. Results indicate that the proposed design maintains voltage drops within a 3-5% margin and ensures coordinated protection against fault currents up to 76.2 kA at the main bus.