Electrical Systems and Equipment

Abstract

Modern buildings are totally dependent upon the continuous and uninterrupted flow of electrical current. In the event of a power failure, modern buildings soon become uninhabitable. The utility companies have made significant strides to limit the frequency and duration of power failures through a series of complex interconnect systems, and the use of sophisticated control and switching devices. Most in-building distribution systems, equipment, and devices are equally reliable. In the event of a power failure, emergency generators and uninterruptable power sources (UPS) provide temporary back-up power for essential needs. Computers will remain operational until they can be properly shut down or until a short-duration failure is corrected; in medical facilities vital services will continue; and in all modern buildings power will be provided for communications and safe egress.