The new edition aims to simplify the math, emphasize the theory, and consolidate the information needed by electrical engineers and technicians who support operations, maintenance, protective relay systems, and betterment projects for generating stations and industrial facilities. It begins with a cursory review of basic electrical phenomenon and then provides additional insights into electrical theory. Single phase and three phase electrical theory is explained in a simplified manner that is not presented in other books. All chapters have been expanded and updated, with the inclusion of an entirely new chapter.