Copyright © 2009
by
The Goodheart-Willcox Company, Inc.
Previous editions copyright 2004, 2001, 1994, 1988, 1978,
1975, 1968, 1966, 1964
All rights reserved. No part of this work may be reproduced, stored, or trans-
mitted in any form or by any electronic or mechanical means, including infor-
mation storage and retrieval systems, without the prior written permission of
The Goodheart-Willcox Company, Inc.
Manufactured in the United States of America.
Library of Congress Catalog Card Number 2008042977
ISBN 978-1-60525-041-0
1 2 3 4 5 6 7 8 9 – 09 – 13 12 11 10 09 08
The Goodheart-Willcox Company, Inc. Brand Disclaimer: Brand names,
company names, and illustrations for products and services included in this
text are provided for educational purposes only and do not represent or imply
endorsement or recommendation by the author or the publisher.
The Goodheart-Willcox Company, Inc. Safety Notice: The reader is
expressly advised to carefully read, understand, and apply all safety pre-
cautions and warnings described in this book or that might also be indicat-
ed in undertaking the activities and exercises described herein to minimize
risk of personal injury or injury to others. Common sense and good judg-
ment should also be exercised and applied to help avoid all potential haz-
ards. The reader should always refer to the appropriate manufacturer’s
technical information, directions, and recommendations; then proceed with
care to follow specific equipment operating instructions. The reader should
understand these notices and cautions are not exhaustive.
The publisher makes no warranty or representation whatsoever, either
expressed or implied, including but not limited to equipment, procedures,
and applications described or referred to herein, their quality, performance,
merchantability, or fitness for a particular purpose. The publisher assumes
no responsibility for any changes, errors, or omissions in this book. The
publisher specifically disclaims any liability whatsoever, including any direct,
indirect, incidental, consequential, special, or exemplary damages resulting,
in whole or in part, from the reader’s use or reliance upon the information,
instructions, procedures, warnings, cautions, applications, or other matter
contained in this book. The publisher assumes no responsibility for the
activities of the reader.
Library of Congress Cataloging-in-Publication Data
Gerrish, Howard H.
Electricity / by Howard H. Gerrish, William E. Dugger, Kenneth P
DeLucca. — 10th ed.
p. cm.
Includes index.
ISBN 978-1-60525-041-0
1. Electric engineering. I. Dugger, William. II. DeLucca, Kenneth P. III. Title.
TK146.G43 2009
537—dc22 2008042977
2