Mar 2, 2017

Publication of this Recommended Practice has been approved by the IES. Suggestions for revisions should be directed to the IES.

Prepared by: The IES Nomenclature Committee

ANSI/IES LS-1 is under continuous maintenance by the IES Nomenclature Committee, and the Society has procedures for publication of revisions. A continuous-maintenance submittal form, instructions, and deadlines may be obtained in electronic form from the IES Director of Standards ([email protected]).

Copyright 2021 by the Illuminating Engineering Society.

Approved as an American National Standard November 2, 2021.

All rights reserved. No part of this publication may be reproduced in any form, in any electronic retrieval system, or otherwise without prior written permission of the IES.

Published by the Illuminating Engineering Society, 120 Wall Street, New York, New York 10005.

IES Standards are developed through committee consensus and produced by the IES Office in New York. Careful attention is given to style and accuracy. If any errors are noted in this document, please forward them to Brian Liebel, Director of Standards, at [email protected] or the above address for verification and correction. The IES welcomes and urges feedback and comments.

ISBN 978-0-87995-401-7.

IES publications are developed through the consensus standards development process approved by the American National Standards Institute. This process brings together volunteers representing varied viewpoints and interests to achieve consensus on lighting recommendations. While the IES administers the process and establishes policies and procedures to promote fairness in the development of consensus, it makes no guaranty or warranty as to the accuracy or completeness of any information published herein. The IES disclaims liability for any injury to persons or property or other damages of any nature whatsoever, whether special, indirect, consequential or compensatory, directly or indirectly resulting from the publication, use of, or reliance on this document.

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