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Recognized as an American National Standard (ANSI)

IEEE Std 241-1990
(Revision of IEEE Std 241-1983)

IEEE Recommended Practice for Electric Power Systems in Commercial Buildings


Power Systems Engineering Committee of the IEEE Industry Applications Society
Approved December 6, 1990

IEEE Standards Board
Approved May 17, 1991

American National Standards InstituteAbstract: A guide and general reference on electrical design for commercial buildings is provided. It covers load characteristics; voltage considerations; power sources and distribution apparatus; controllers; services, vaults, and electrical equipment rooms; wiring systems; systems protection and coordination; lighting; electric space conditioning; transportation; communication systems planning;facility automation; expansion, modernization, and rehabilitation; special requirements by occupancy; and electrical energy management. Although directed to the power oriented engineer with limited commercial building experience, it can be an aid to all engineers responsible for the electrical design of commercial buildings. This recommended practice is not intended to be a complete handbook; however,it can direct the engineer to texts, periodicals, and references for commercial buildings and act as a guide through the myriad of codes, standards, and practices published by the IEEE, other professional associations, and governmental bodies. Keywords: Commercial buildings, electric power systems, load characteristics

The Institute of Electrical and Electronics Engineers, Inc. 345 East 47thStreet, New York, NY 10017-2394, USA Copyright © 1991 by The Institute of Electrical and Electronics Engineers, Inc. All rights reserved. Published 1991 Printed in the United States of America ISBN 1-55937-088-2 Library of Congress Catalog Number 91-073747 No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior permission of thepublisher.

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