The training manual provides information related to the tasks assigned to the Electrician's Mate Third and Second Class who operate and maintain power and lighting systems and associated equipment. Individual chapters deal with: career challenges for the Electrician's Mate, safety precautions, test equipment, electrical installations, A-C power distribution systems, D-C power distribution systems, motor controllers, maintenance and repair of motors and generators, shipboard lighting, degaussing, electrical propulsion and controls, central operations system, basic electronic components and circuits, logic systems, electrical auxiliaries, and sound motion picture systems. There is an appendix of electronics symbols and an index. The manual is extensively illustrated with diagrams and photographs. (PR)