This book is divided in two sections. The first section; covers basics of maintenance of electrical equipment, details of electrical safety, tools used during installation, maintenance and testing, Earthing and underground cables. The second section provides instruction sheets to reinforce theoretical instructions to the related experiments. The instruction sheets are the solutions to the practical difficulties, correlating the theory and practice. Step-by-step instructions in detail for carrying out experiment along with relevant theory in brief are given. A set of relevant questions is given at the end of instruction sheets for each experiment.