EBOOK - Delmar's Standard Textbook of Electricity 5th Edition (Stephen L. Herman)

Intended Use
Delmar’s Standard Textbook of Electricity,5th edition, is intended for students in electrical trade programs at high schools and community colleges, as well as those in industry training. It assumes that the reader has had no prior knowledge of electricity but also provides enough comprehensive coverage to be used as a reference tool for experienced electricians.
Subject & Approach
The content itself is presented as a blend of the practical and theoretical. It not only explains the different concepts relating to electrical theory but also provides many practical examples of how to do many of the common tasks the industrial electrician must perform. An extensive art program containing full color photographs and line drawings, as well as the inclusion of practical exercises for the student, also serve to further clarify theoretical concepts.

SECTION I Safety, Basic Electricity, and Ohm’s Law 2
SAFETY OVERVIEW
S–1 General Safety Rules 4
S–2 Effects of Electric Current on the Body 6
S–3 On the Job 7
S–4 Protective Clothing 12
S–5 Ladders and Scaffolds 16
S–6 Fires 19
S–7 Ground-Fault Circuit Interrupters 20
S–8 Arc-Fault Circuit Interrupters (AFCIs) 22
S–9 Grounding 28
UNIT 1 Atomic Structure 34
1–1 Early History of Electricity 35
1–2 Atoms 37
1–3 The Law of Charges 41
1–4 Structure of the Atom 42
1–5 Electron Orbits 44
1–6 Valence Electrons 46
1–7 Electron Flow 47
1–8 Insulators 52
1–9 Semiconductors 52
1–10 Molecules 53
1–11 Methods of Producing Electricity 54
1–12 Electrical Effects 56
UNIT 2 Electrical Quantities and Ohm’s Law 59
2–1 The Coulomb 60
2–2 The Ampere 61
2–3 The Electron Flow Theory 62
2–4 The Conventional Current Flow Theory 62
2–5 Speed of Current 64
2–6 Basic Electric Circuits 67
2–7 The Volt 69
2–8 The Ohm 70
2–9 The Watt 72
2–10 Other Measures of Power 74
2–11 Ohm’s Law 76
2–12 Metric Prefixes 82
UNIT 3 Static Electricity 88
3–1 Static Electricity 89
3–2 Charging an Object 91
3–3 The Electroscope 91
3–4 Static Electricity in Nature 94
3–5 Nuisance Static Charges 97
3–6 Useful Static Charges 98

UNIT 4 Magnetism 103
4–1 The Earth Is a Magnet 104
4–2 Permanent Magnets 106
4–3 The Electron Theory of Magnetism 106
4–4 Magnetic Materials 108
4–5 Magnetic Lines of Force 109
4–6 Electromagnetics 110
4–7 Magnetic Measurement 113
4–8 Magnetic Polarity 115
4–9 Demagnetizing 116
4–10 Magnetic Devices 117
UNIT 5 Resistors 120
5–1 Uses of Resistors 121
5–2 Fixed Resistors 123
5–3 Color Code 126
5–4 Standard Resistance Values of Fixed Resistors 132
5–5 Power Ratings 134
5–6 Variable Resistors 135
5–7 Schematic Symbols 138
SECTION II Basic Electric Circuits 142
UNIT 6 Series Circuits 143
6–1 Series Circuits 144
6–2 Voltage Drops in a Series Circuit 145
6–3 Resistance in a Series Circuit 147
6–4 Calculating Series Circuit Values 147
6–5 Solving Circuits 149
6–6 Voltage Dividers 162
6–7 The General Voltage Divider Formula 164
6–8 Voltage Polarity 165
6–9 Using Ground as a Reference 166
UNIT 7 Parallel Circuits 172
7–1 Parallel Circuit Values 173
7–2 Parallel Resistance Formulas 176
UNIT 8 Combination Circuits 198
8–1 Combination Circuits 199
8–2 Solving Combination Circuits 200
8–3 Simplifying the Circuit 201
UNIT 9 Kirchhoff’s Laws, Thevenin’s, Norton’s,
and Superposition Theorems 226
9–1 Kirchhoff’s Laws 227
9–2 Thevenin’s Theorem 234
9–3 Norton’s Theorem 238
9–4 The Superposition Theorem 242
SECTION III Meters and Wire Sizes 256
UNIT 10 Measuring Instruments 257
10–1 Analog Meters 258
10–2 The Voltmeter 260
10–3 Multirange Voltmeters 262
10–4 Reading a Meter 264
10–5 The Ammeter 268
10–6 Ammeter Shunts 269
10–7 Multirange Ammeters 272
10–8 The Ayrton Shunt 272
10–9 AC Ammeters 277
10–10 Clamp-On Ammeters 281
10–11 DC–AC Clamp-On Ammeters 284
10–12 The Ohmmeter 287
10–13 Shunt-Type Ohmmeters 289
10–14 Digital Meters 290
10–15 The Low-Impedance Voltage Tester 294
10–16 The Oscilloscope 296
10–17 The Wattmeter 307
10–18 Recording Meters 309
10–19 Bridge Circuits 311
UNIT 11 Using Wire Tables and Determining Conductor Sizes 317
11–1 The American Wire Gauge (AWG) 318
11–2 Using the NECCharts 321
11–3 Factors That Determine Ampacity 323
11–4 Correction Factors 325
11–5 Calculating Conductor Sizes and Resistance 332
11–6 Calculating Voltage Drop 343
11–7 Parallel Conductors 345

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