Electrical Studies for Trades Fourth Edition by Stephen L. Herman
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Electrical Studies for Trades Fourth Edition by Stephen L. Herman


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. The author and Cencage Delmar Learning would like to acknowledge and thank the reviewers for the many suggestions and comments given during the development of this third edition. Thanks go to:

Marvin Moak
Hinds Community College
Raymond, MS

Larry Snyder
Red Rocks Community College
Lakewood, CO

Randy Ludington
Guilford Technical Community College
Jamestown, NC

Wes Evans
Truckee Meadows Community College
Reno, NV

Patrick Ottesen
Milwaukee Area Technical College
Oak Creek, WI

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