Electrical Studies for Trades 4th Edition PDF

Electrical Studies for Trades 4th Edition PDF

Electrical Studies for Trades – Packed with real-world examples, vivid illustrations, and the latest developments from the field, ELECTRICAL STUDIES FOR TRADES, 4th EDITION is ideal for current and future service technicians in air conditioning and refrigeration, construction, and facilities management–and anyone else who needs a practical knowledge of electricity. Extremely reader-friendly, the book begins with an overview of basic electricity concepts–rather than complex mathematical calculations.

From here, you 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, round out the comprehensive coverage.

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 – Electrical Studies for Trades

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.

Contents – Electrical Studies for Trades

Preface ………………………………………………………………… v

Unit 1 Atomic Structure …………………………………………………. 1

Unit 2 Electrical Quantities, Ohm’s Law, and Resistors ……………………………………………………… 21

Unit 3 Electrical Sources and Static Charges …………………. 62

Unit 4 Magnetism ………………………………………………………… 84

Unit 5 Series Circuits …………………………………………………… 115

Unit 6 Parallel Circuits ………………………………………………… 140

Unit 7 Combination Circuits ……………………………………….. 165

Unit 8 Measuring Instruments ……………………………………. 192

Unit 9 Alternating Current ………………………………………….. 241

Unit 10 Alternating Current Loads ……………………………….. 256

Unit 11 Capacitive Loads ………………………………………………. 271

Unit 12 Three-Phase Circuits ………………………………………… 301

Unit 13 Transformers ……………………………………………………. 319

Unit 14 Electrical Services …………………………………………….. 347

Unit 15 General Wiring Practices Part 1—Receptacle and Switch Connections …… 379

Unit 16 General Wiring Practices Part 2—Protection Circuits, Dimmers, and Chimes ……………………………………………………… 409

Unit 17 Three-Phase Motors ………………………………………… 431

Unit 18 Single-Phase Motors ………………………………………… 469

Unit 19 Schematics and Wiring Diagrams ……………………… 500

Unit 20 Motor Installation ……………………………………………. 522

Appendix A American Wire Gauge Table ……………………………… 555

Appendix B Identification of Mica and Tubular Capacitors ………………………………………………………… 556 Appendix C Alternating Current Formulas ………………………….. 560

Appendix D Greek Alphabet ………………………………………………… 573

Appendix E Answers to Practice Problems …………………………. 574

Glossary ……………………………………………………………. 584

Index ……………………………………………………………….. 595

Author – Electrical Studies for Trades

As a retired electrician and proficient instructor with more than 30 years of practical experience, Stephen L. Herman is known for his reader-friendly approach. A seasoned author, Mr. Herman has written leading books on electricity and mathematics that are popular with students and instructors alike. For two decades Mr. Herman served as lead instructor for the Electrical Technology Curriculum at Lee College in Baytown, Texas, where he received an Excellence in Education Award from the Halliburton Education Foundation.

He also taught at Randolph Community College in Asheboro, North Carolina, for nine years and helped pioneer an electrical curriculum for Northeast Texas Community College in Mount Pleasant, Texas. His additional publications include ELECTRIC MOTOR CONTROL, ELECTRICITY AND CONTROLS FOR HVAC/R, INDUSTRIAL MOTOR CONTROLS, UNDERSTANDING MOTOR CONTROLS, ELECTRONICS FOR ELECTRICIANS, ALTERNATING CURRENT FUNDAMENTALS, DIRECT CURRENT FUNDAMENTALS, ELECTRICAL STUDIES FOR TRADES, ELECTRICAL PRINCIPLES, EXPERIMENTS IN ELECTRICITY FOR USE WITH LAB VOLT EQUIPMENT, THE COMPLETE LABORATORY MANUAL FOR ELECTRICITY, and PRACTICAL PROBLEMS IN MATHEMATICS FOR ELECTRICIANS.

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