This book gives a very detailed account of how to carry out testing and fault diagnoses to the equipment connected to the fixed wiring. The book is suitable for training and practicing electricians wanting to broaden and enhance their knowledge of circuit configurations and adopt a logical aproach to fault diagnoses. The book covers Single and three phase motors Motor control circuits The function of induction motors Load current measurement Understanding Earth electrode measurement Testing Y & S plan heating systems Testing fluorescent lighting units Measurement of Ze & Zs in metalclad installations