This highly successful book is now updated in line with the 18th Edition of the Wiring Regulations. Electrical Installation Work provides a topic by topic progression through the areas of electrical installations, including how and why electrical installations are designed, installed and tested. Additional content in this edition includes detail on LED lighting and medical locations. A new appendix contains a glossary of electrical installation work terms, ensuring that readers of all levels of experience can easily grasp every topic. Brian Scaddan's subject-led approach makes this a valuable resource for professionals and students on both City & Guilds and EAL courses. This approach also makes it easy for those who are learning the topic from scratch to get to grips with it in a non syllabus-led way. The book is already widely used in education facilities across the UK. It has been published for almost 40 years, and in its current form since 1992.
Author(s): Brian Scaddan
Edition: 9th
Publisher: Routledge/Taylor & Francis
Year: 2019
Language: English
Pages: 332
Tags: Electrical Installation, Wiring
Cover......Page 1
Half Title......Page 2
Title......Page 4
Copyright......Page 5
Contents......Page 6
Preface......Page 12
Units......Page 14
Multiples and Submultiples of Units......Page 15
Indices......Page 16
Manipulation or Transposition of Formulae......Page 17
The Theorem of Pythagoras......Page 19
Basic Trigonometry......Page 20
Self-Assessment Questions......Page 21
Areas and Volumes......Page 22
Molecules and Atoms......Page 24
Potential Difference......Page 26
Electrical Quantities......Page 27
Ohm’s Law......Page 30
Electricity and the Human Body......Page 31
Voltage Bands......Page 32
Self-Assessment Questions......Page 33
Resistance......Page 34
Voltage Drop......Page 35
Power: Symbol, P; Unit, Watt (W )......Page 42
Electrical Energy: Symbol, W; Unit, kilowatt-hour (kWh)......Page 44
Self-Assessment Questions......Page 47
Electromagnetism......Page 48
Application of Magnetic Effects......Page 51
Drawing the Waveform of an Alternating Quantity......Page 54
Root-Mean-Square (r.m.s.) Value......Page 55
Inductance: Symbol, L; Unit, Henry (H)......Page 56
Induced e.m.f. Due to Change in Flux......Page 57
Time Constant: Symbol, T......Page 58
Graphical Derivation of Current Growth Curve......Page 59
Inductance in a.c. Circuits......Page 60
Resistance and Inductance in Series (R–L Circuits)......Page 61
Impedance: Symbol, Z; Unit, Ohm (Ω)......Page 62
Power in a.c. Circuits......Page 63
Transformers......Page 65
Self-Assessment Questions......Page 68
Capacitance: Symbol, C; Unit, Farad (F)......Page 70
Capacitors in Series......Page 71
Capacitors in d.c. Circuits......Page 72
Resistance and Capacitance in Series......Page 73
Self-Assessment Questions......Page 74
CHAPTER 6 Resistance, Inductance and Capacitance in Installation Work......Page 76
PF Improvement......Page 78
Self-Assessment Questions......Page 83
Star and Delta Connections......Page 84
Current and Voltage Distribution......Page 85
Measurement of Power in Three-Phase Systems......Page 87
Self-Assessment Questions......Page 88
Direct-Current Motors......Page 90
The a.c. Motors......Page 95
Starters......Page 99
Installing a Motor......Page 103
Power Factor of a.c. Motors......Page 105
Motor Ratings......Page 109
Self-Assessment Questions......Page 111
The Primary Cell......Page 112
The Secondary Cell......Page 113
Cell and Battery Circuits......Page 116
Self-Assessment Questions......Page 118
Lamp Types......Page 120
Calculation of Lighting Requirements......Page 126
Self-Assessment Questions......Page 131
Environmental Effects of the Generation of Electricity......Page 134
Heat-Producing Renewables......Page 137
Electricity-Producing Renewables......Page 141
Co-Generation......Page 144
Water Conservation......Page 145
The Purpose and Function of the National Grid......Page 146
The Aesthetic Effects of the Siting of Generation and Transmission Plant......Page 147
Safety Regulations......Page 150
The Health and Safety at Work Act 1974......Page 151
Electricity at Work Regulations 1989......Page 152
Chemicals (Hazardous Information and Packaging for Supply) Regulations (CHIP) 2009......Page 154
Control of Asbestos Regulations 2002......Page 155
General Safety......Page 156
The Mechanics of Lifting and Handling......Page 158
Work, Load and Effort......Page 160
Access Equipment......Page 161
The Joining of Materials......Page 163
Fire Safety......Page 164
Electrical Safety......Page 165
First Aid......Page 166
Electric Shock......Page 167
CHAPTER 13 The Electrical Contracting Industry......Page 168
Sample Specification......Page 170
Cost of Materials and Systems......Page 173
Cables......Page 178
Jointing and Terminations......Page 180
Plastics......Page 184
Cable Management Systems......Page 185
Fixing and Tools......Page 191
Comparison of Systems......Page 195
Self-Assessment Questions......Page 196
Lighting Circuits......Page 198
Power Circuits......Page 200
Radiant or Direct Heating......Page 202
Thermostats......Page 203
Installation Systems......Page 204
Multi-Storey Commercial or Domestic Installations......Page 205
Off-Peak Supplies......Page 209
Alarm and Emergency Systems......Page 210
Call Systems......Page 212
Emergency Lighting Systems......Page 213
Central Heating Systems......Page 214
Special Locations......Page 215
Earth: What It Is, and Why and How We Connect To It......Page 226
Earth Electrode Resistance......Page 228
Earthing Systems......Page 229
Earth Fault Loop Impedance......Page 232
Residual Current Devices......Page 233
Requirements for RCD Protection......Page 235
Self-Assessment Questions......Page 237
Protection......Page 238
Control......Page 248
Design Current......Page 252
Rating Factors......Page 253
Voltage Drop......Page 255
Selection of cpc Using Table 54.7......Page 256
Installation Reference Methods......Page 259
Installation Methods......Page 261
Measurement of Electrical Quantities......Page 264
Measurement of Current......Page 265
Instruments in General......Page 267
Selection of Test Instruments......Page 268
Calibration, Zeroing and Care of Instruments......Page 269
Initial Inspection......Page 270
Testing Continuity of Protective Conductors......Page 271
Testing Continuity of Ring Final Circuit Conductors......Page 273
Testing Insulation Resistance......Page 274
Testing Polarity......Page 276
Testing Earth Electrode Resistance......Page 277
Testing Earth Fault Loop Impedance......Page 278
External Loop Impedance Ze......Page 279
Periodic Inspection......Page 281
Certification......Page 282
Inspection and Testing......Page 283
Fault Finding......Page 285
Electronics Components......Page 288
Semi-Conductors......Page 290
Rectification......Page 291
Electronics Assembly......Page 295
Self-Assessment Questions......Page 296
Answers to Self-Assessment Questions......Page 298
Appendix......Page 302
Glossary......Page 312
Index......Page 324
