Global mains wiring for electrical equipment

This paper explores the different methods to connect electrical equipment such as information technology equipment (ITE) to the AC and DC mains in the global marketplace. It describes the difference in AC power systems around the world, demonstrates single-phase and three-phase power systems used worldwide, and describes IT power distribution systems, and how to design and test electrical equipment for connecting to IT power distribution systems. Also, this paper discusses the different methods used for permanently connecting electrical equipment to the mains in different regions of the world, and how to design electrical equipment to accommodate the different installation methods.