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Electrical Studies for Trades 4th Edition is ideal for current and future service technicians in fields such as air conditioning and refrigeration, construction, and facilities management who require practical knowledge of electricity. This book begins with an overview of basic electricity concepts rather than introducing complex mathematical calculations. From this starting point, readers proceed directly to "must-know" information, including how to determine wire sizes and make a variety of common switch connections. Different types of electrical power panels are also examined in detail. Discussion of general wiring practices and circuit protectors, as well as an introduction to transformers and three-phase and single-phase motors, rounds out the comprehensive coverage.
Features:
- Photographs/Illustrations: Many photographs and illustrations have been updated.
- Latest Information: New information on grounding and procedures for testing the quality of the grounding system.
- New Units: A new unit has been added that explains in detail the procedure for determining conductor size, fuse or circuit breaker size, overload size, and starter size for electric motors.
- New Information: Information on low voltage chime circuits has been added to the section on General Wiring Practices.
- Up-to-Date Information: Provides completely up-to-date information on both motion and process control to ensure that the entire spectrum of industrial control is addressed.
- Real-Life Examples: Examples that mirror the types of situations technicians face in the field are used throughout to reinforce the practical, applied, approach to electricity fundamentals.
- Measurement Instruments Explained: Measurement instruments commonly used in the field are identified and explained to assist readers in using them and interpreting results.
- Stand-Alone Units: Stand-alone units allow readers to gain an overall understanding of electricity basics, while focusing their attention on topics that relate to particular trades.
From the Preface
There are many technical fields that require a working knowledge of electricity, such as air conditioning and refrigeration, automotive repair, electrical apprenticing, carpentry, building maintenance, construction work, and appliance repair. Electrical Studies for Trades, 4th Edition, is written for technicians who are not electricians but who must have a practical working knowledge of electricity in their chosen field. The fourth edition of Electrical Studies for Trades is the most comprehensive revision of the text since it was first published in 1997.
This text assumes the students have no knowledge of electricity. Electrical Studies for Trades, 4th Edition, begins with atomic structure and basic electricity. The text progresses through Ohm's Law calculations, series, parallel, and combination circuits. These concepts are presented in an easy-to-follow, step-by-step procedure. The math level is kept to basic algebra and trigonometry. It is not the intent of this text to present electricity from a purely mathematical standpoint, but rather to explain it in an easy-to-read, straightforward manner using examples and illustration.
Electrical Studies for Trades 4th Edition includes concepts of inductance and capacitance in alternating current circuits. Both single-phase and three-phase power systems are covered. Some of the electrical machines discussed in the text are transformers, three-phase motors, and single-phase motors. Common measuring instruments such as voltmeters, ammeters, and ohmmeters are covered. The text also includes information on oscilloscopes because there are many circuits that require the use of an oscilloscope in troubleshooting.
Electrical Studies for Trades, 4th Edition, provides information on basic wiring practices such as connection of electrical outlets and switch connections. Detailed explanations for the connection of single-pole, three-way, and four-way switches are presented in an easy-to-follow step-by-step procedure. The text includes information on ground fault interrupters, arc-fault interrupters, light dimmers, and chime circuits. The final unit includes information on motor control schematics and wiring diagrams.
New for the Fourth Edition
The fourth edition has expanded information on grounding and procedures for testing the quality of the grounding system. Information on low-voltage chime circuits has been added to the section on general wiring practices. Due to adding information concerning chime circuits, that section has been divided into Units 15 and 16, General Wiring Practices, Parts 1 and 2. A new unit has been added that explains in detail the procedure for determining conductor size, fuse or circuit breaker size, overload size, and starter size for electric motors. This unit is based on the requirements of the National Electrical Code that governs the installation of motor circuits.
About the Author
Stephen L Herman has been both an electrician and teacher for over 20 years. He has authored numerous textbooks on the subjects of electricity and mathematics. He recently retired from being a lead instructor for Electrical Technology Curriculum at Lee College in Baytown, Texas. Mr Herman received an Excellence in Education Award by the Haliburton Education Foundation.
Table of Contents
Preface. Unit 1: Atomic Structure. Unit 2: Electrical Quantities, Ohm's Law, and Resistors. Unit 3: Electrical Charges and Static Charges. Unit 4: Magnetism. Unit 5: Series Circuits. Unit 6: Parallel Circuits. Unit 7: Combination Circuits. Unit 8: Measuring Instruments. Unit 9: Alternating Current. Unit 10: Alternating Current Loads. Unit 11: Capacitive Loads. Unit 12: Three-Phase Circuits. Unit 13: Transformers. Unit 14: Electrical Services. Unit 15: General Wiring Practices. Part 1 - Receptacle and Switch Connections. Unit 16: General Wiring Practices. Part 2 - Protection Circuits, Dimmers, and Chimes. Unit 17: Three-Phase Motors. Unit 18: Single-Phase Motors. Unit 19: Schematics and Wiring Diagrams. Unit 20: Motor Installation. Appendix A: American Wire Gauge Table. Appendix B: Identification of Mica and Tubular. Appendix C: Capacitors. Appendix D: Alternating Current Formulas. Appendix E: Greek Alphabet. Answers to Practice Problems. Glossary. Index.
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