Industrial Electricity and Wiring M 9
JAMES A. MOYER, S.B.,.A.M.
Director of University Extension, Massachusetts Department of Education; Member of American Institute of Electrical Engineers; American Society of ■Mechanical Engineers; Society of Automotive Engineers; Fellow of the American Association for the Advancement of Science; Fellow of •"v the Royal Society of Arts; Mitglied des Vereines Deutscher Ingenieure; Membre Titulaire Association Internationale du Froid; Member of the Franklin Institute
JOHN F. WOSTREL
Formerly Instructor in Electrical Engineering and Supervisor in Charge of Industrial Subjects, Division of University Extension, Massachusetts Department of Education
Third Edition Thikd Impression
McGRAW-HILL BOOK COMPANY, Inc.
new york and london 1943