Electrical Installation Calculations-Basic 10th Edition 2022 (PDF)

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About the book:

Publisher: Routledge
Author: Christopher Kitcher and A.J. Watkins
Place of Publication: United Kingdom
Pages: 216
Edition: 2022
Language: English
Size: 3 Mb

Now in its 10th edition, Electrical Installation Calculations: Basic has been updated to include any changes required to bring it in line with the 18th edition of the IET electrical wiring regulations (BS7671:2018).


Content:

Preface ix
1 Use of Calculators 1
2 Simple Transposition of Formulae 3
3 SI Units 5
SI Derived Units (Used in Book 1 & 2) 6
SI Unit Prefixes 7
4 Conductor Colour Identification 9
5 Circuit Calculations 11
Ohm’s Law 11
Resistors in Series 14
Resistors in Parallel 17
Calculation of Total Resistance of Resistors in Parallel 20
Resistances in Parallel Using Product over Sum Method 21
Series and Parallel Resistors 25
6 Voltage Drop 29
Conductor Resistance and Voltage Drop Using Ohm’s Law 29
Voltage Drop Using Tables From BS 7671 32
7 Areas, Perimeters and Volume 33
Calculation of Perimeters 33
Areas and Perimeters 34
Volumes 36
8 Space Factors 41
Calculation 41
9 Coulombs and Current Flow 53
10 Internal Resistance 55
Resistivity 55
11 Power in a d.c. and Purely Resistive a.c. Circuit 67
Method 1 67
Method 2 71
Method 3 73
Mechanics 78
Mass, Force and Weight 80
Efficiency 92
12 Power Factor 99
kVA, kVAr and kW 99
13 Transformers 103
Transformer Calculations 103
Transformer Current 105
14 Electromagnetic Effect 107
Magnetic Flux and Flux Density 107
Force on a Current Carrying Conductor Within a Magnetic Field 108
15 Induced e.m.f. I l l
16 Self-Inductance 113
17 Mutual Inductance 115
18 Cable Selection 121
Disconnection Times for Fuses 125
Disconnection Times for Circuit Breakers 126
Fusing Factors, Fault Current and Overload 127
Short Circuit Current 128
19 Earth Fault Loop Impedance 129
Earth Fault Loop Impedance Ze 129
Earth Fault Loop Impedance Zs 130
20 Material Costs, Discounts and Value Added Tax 135
21 Electrostatics 141
The Parallel Plate Capacitor 141
Series Arrangement of Capacitors 142
Parallel Arrangement of Capacitors 144
22 Formulae 147
23 Electronic Symbols 153
24 Glossary 169
25 Answers to Exercises 173
Exercise 1 173
Exercise 2 173
Exercise 3 174
Exercise 4 175
Exercise 5 177
Exercise 6 177
Exercise 7 178
Exercise 8 179
Exercise 9 179
Exercise 10 181
Exercise 11 183
Exercise 12 184
Exercise 13 184
Exercise 14 186
Exercise 15 186
26 Additional Questions and Answers 189
Answers 205

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