This book deals with an area of practice which many students and non-electricians find particularly challenging. It explains how to interpret circuit diagrams, wiring systems and the principles and practice of testing and fault diagnosis. It will give the reader confidence to understand the principles of testing and to apply this knowledge to fault finding in electrical circuits. It is a handy reference for anybody who needs to be able to trace faults in circuits, whether in domestic, commercial or industrial settings. It will be a time-saver for all electricians, plumbers, heating engineers, television and intruder alarm installers and others. Brian Scaddan, I Eng, MIET, is a consultant for and an Honorary Member of City & Guilds. He has over 35 years' experience in Further Education and training. He is Director of Brian Scaddan Associates Ltd, an approved City & Guilds and NICEIC training centre offering courses on all aspects of Electrical Installation Contracting including the C&G 2382, 2391, 2392, 2377 series and NICEIC DISQ curses. He is also a leading author of books on electrical installation.