Description: Part of the Residential Construction Academy series, Electrical Principles bridges the gap between theory books that include topics that electricians do not need to know (e.g., resonance and devices) and books for electricians that try to cover all the theory in one chapter. Instead, through the use of a lively writing style and frequent examples, Stephen Herman expands on the important topics that residential electricians need, so that students have time to fully grasp the concepts they'll need on the job. This text focuses on the theory that a residential wireman needs and it includes important safety and OSHA information.
Create a direct link between your education/training program and the residential construction industry! Training materials are now available for many of the residential crafts based on skill standards developed by the nation's leading builders and educators. The result of a strategic partnership between the National Association of Home Builder's Home Builders Institute and Delmar Learning, the Residential Construction Academy Series is the perfect way to teach essential workplace skills to people new to the building trades.
Ideal for use in vocational programs, workforce development programs, professional associations, and trade unions, all materials are based on industry standards. The Residential Construction Academy also offers credentialing for programs using the skill standards and materials, along with a national registry of students who have successfully completed participating programs. The goal is a workforce that is skilled, knowledgeable, and able to meet the needs of the industry today and well into the future. Product Benefits: - examples are used extensively throughout the text to help students master the material
- a separate chapter on Safety emphasizes the importance of safety on the job
- a Glossary of Terms opens each chapter to give students easy access to terminology when they need it
- additional pedagogical features -chapter overviews, objectives, summary, practice problems, and review questions- support the text material
- an extensive full-color art and photo program brings the topic to life for students
Table of Contents: Section OneBasic Electricity1
Chapter 1 Safety3
General Safety Rules5
Effects of Electric Current on the Body5
Protective Clothing8
Ladders and Scaffolds9
Fires11
Ground Fault Circuit Interrupters12
Grounding 13
Summary14
Review Questions 14
Chapter 2Basic Electrical Theory19
Early History of Electricity21
Atoms21
The Law of Charges23
Centrifugal Force24
Electron Orbits24
Valence Electrons25
Electron Flow26
Insulators26
Methods of Producing Electricity26
Summary 27
Review Questions27
Chapter 3Electrical Quantities and Ohms Law28
The Coulomb30
The Amp30
The Electron Theory30
The Conventional Current Theory30
Speed of Current 31
Basic Electrical Circuits32
The Volt33
The Ohm33
The Watt34
Other Measures of Power35
Ohms Law36
Metric Units39
Summary39
Review Questions40
Chapter 4Resistors41
Uses of Resistors43
Fixed Resistors43
Color Code45
Standard Resistance Values of Fixed Resistors48
Power Ratings49
Variable Resistors50
Schematic Symbols51
Summary52
Chapter 5Series Circuits54
Series Circuits56
Voltage Drops in a Series Circuit56
Resistance in a Series Circuit57
Calculating Series Circuit Values57
Solving Circuits58
Voltage Dividers64
The General Voltage Divider Formula65
Voltage Polarity65
Using Ground as a Reference66
Summary67
Review Questions67
Chapter 6Parallel Circuits69
Parallel Circuit Values71
Parallel Resistance Formulas72
Summary 79
Review Questions80
Chapter 7Combination Circuits82
Combination Circuits84
Solving Combination Circuits84
Simplifying the Circuit84
Summary96
Review Questions96
Chapter 8Measuring Instruments99
Analog Meters101
The Voltmeter101
Multirange Voltmeters102
Reading a Meter103
The Ammeter105
Ammeter Shunts105
AC Ammeters106
Clamp-on Ammeters108
DC-AC Clamp-on Ammeters108
The Ohmmeter110
Digital Meters111
The Low-Impedance Voltage Tester113
Summary114
Review Questions115
Chapter 9Using Wire Tables and Determining Conductor Sizes 116
Using the National Electric Code Charts118
Factors That Determine Ampacity118
Correction Factors122
Computing Conductor Sizes and Resistance123
Computing Voltage Drop128
Parallel Conductors128
Testing Wire Installations129
Summary130
Review Questions131
Section TwoAlternating Current145
Chapter 10 Magnetic Induction132
Magnetic Induction134
Flemings Left-Hand Generator Rule135
Moving Magnetic Fields135
Determining the Amount of Induced Voltage135
Lenzs Law136
Rise Time of Current in an Inductor136
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