Wiring Systems and Fault Finding: For Installation Electricians

✍ Scribed by Brian Scaddan

• Publisher: Newnes
• Year: 2003
• Tongue: English
• Leaves: 123
• Edition: 3rd
• Category: Library

✦ Synopsis

Wiring Systems and Fault Finding for Installation Electricians is a handy reference guide that deals with an area of practice which many students and technicians find particularly challenging. The readership of this book includes installation and plumbing contractors, heating engineers, and anyone who needs to be able to trace faults in circuits, whether they be in domestic, commercial or industrial systems. Coverage includes the interpretation of circuit diagrams, wiring systems, and the principles and practice of testing and fault diagnosis. Applications focused on include heating systems and intruder alarms.The third edition of this popular guide has updated and expanded coverage of testing and fault-finding techniques. New sections cover shock risk, safe isolation, and basic electrical theory. It has also been brought into line with the latest revisions to the IEE Wiring Regulations (BS7671:2001).Brian Scaddan is a Chief Examiner and Honorary Member of City and Guilds. He has over 30 years' experience in Further Education, and is now Director of Brian Scaddan Associates, Engineering Training Consultants. He is a leading author of books on electrical installation, inspection and testing, including IEE Wiring Regulations: Explained and Illustrated and Electrical Installation Work. * Electrical applications explained for a wide range of technicians New and expanded sections on shock risk, safe isolation, testing and electrical theory Fully updated in line with the latest IEE Wiring Regulations (BS7261:2001)

✦ Table of Contents

Front Cover......Page 1
Wiring Systems and Fault Finding for Installation Electricians......Page 4
Copyright Page......Page 5
Contents......Page 6
Preface......Page 8
BS EN 60617 symbols......Page 9
Diagrams......Page 13
Circuit convention......Page 16
Constructing and interpreting circuit diagrams......Page 18
Heating and ventilation system......Page 21
Relay logic......Page 23
Programmable logic controllers......Page 26
Drawing exercises......Page 30
Ring circuits......Page 32
Distribution systems......Page 35
Emergency lighting systems......Page 41
Security and fire alarm systems......Page 42
Call systems......Page 49
Motor starter circuits......Page 52
Central heating systems......Page 54
Extra low voltage lighting......Page 58
Domestic telephone systems......Page 61
Selection of test instruments......Page 64
Approved test lamps and indicators......Page 65
Calibration, zeroing and care of instruments......Page 66
Continuity of protective conductors......Page 68
Continuity of ring final circuit conductors......Page 71
Insulation resistance......Page 77
Polarity......Page 79
Earth fault loop impedance......Page 81
Earth electrode resistance......Page 85
Functional testing......Page 89
Prospective short circuit current......Page 91
Signs and symptoms......Page 93
Ring and radial socket outlet circuits......Page 95
Cable fault location......Page 96
Emergency lighting......Page 98
Call systems......Page 99
Central heating systems......Page 100
Motor starter circuits......Page 101
Conclusion – and a cautionary tale......Page 104
Appendix. Shock risk, safe isolation and basic electrical theory......Page 106
Solutions......Page 119
Index......Page 122