This book presents the most useful practical information regarding Installation, Commis­sioning, Testing, Operation and Maintenance for every Electrical Engineering Student, and Electrical Engineer. The book is likely to be useful for preparing for Viva-Voce, Interviews, Departmental Examinations, Training and Career Development courses for Power Engineers. This book has been recommended as a text-book and reference book for the Stu­dents of Electrical Engineering Courses in many Polytechnics and Engineering Col­leges for the course, “Commissioning and Maintenance of Electrical Equipments”. Practical Activities are as important as design and development activities and more Engineers are employed in practical jobs of various types. They need an up-to-date and comprehensive book of this kind. This revised and enlarged edition includes additional useful Question-Answers on Safety Management, Renewable Energy Plants, HVDC, Towers, Distribution Systems. Traction, Illu­mination, Power Electronics, Digital Computer Micro-processor Based Controls, Power Plant Automation, Electro-chemistry & Electro-metallurgy, Field Quality and ISO 9000, Information technology applied to electrical systems & plants, Maintenance of electrical equipment Reli­ability, Availability and Outages. The suggestions and comments from the readers are eagerly awaited.