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 RP-16-17 is under continuous maintenance by the IES Nomenclature Committee, and the Society has procedures for publication of addenda or revisions. A continuous maintenance submittal form, instructions, and deadlines may be obtained in electronic form from the IES Director of Standards and Research (bliebel@ies.org).

Copyright 2017 by the Illuminating Engineering Society.

Approved as an American National Standard July 13, 2017.

Approved by the IES Standards Committee June 16, 2017, as a Transaction of the Illuminating Engineering Society.

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 and Guides 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 and Research, at the above address for verification and correction. The IES welcomes and urges feedback and comments.

DISCLAIMER
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.

In issuing and making this document available, the IES is not undertaking to render professional or other services for or on behalf of any person or entity. Nor is the IES undertaking to perform any duty owed by any person or entity to someone else. Anyone using this document should rely on his or her own independent judgment or, as appropriate, seek the advice of a competent professional in determining the exercise of reasonable care in any given circumstances.

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AMERICAN NATIONAL STANDARD
Approval of an American National Standard requires verification by ANSI that the requirements for due process, consensus, and other criteria for approval have been met by the standards developer.

Consensus is established when, in the judgment of the ANSI Board of Standards Review, substantial agreement has been reached by directly and materially affected interests. Substantial agreement means much more than a simple majority, but not necessarily unanimity. Consensus requires that all views and objections be considered, and that a concerted effort be made toward their resolution.

The use of American National Standards is completely voluntary; their existence does not in any respect preclude anyone, whether that person has approved the standards or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standards.

The American National Standards Institute does not develop standards and will in no circumstances give an interpretation to any American National Standard. Moreover, no person shall have the right or authority to issue an interpretation of an American National Standard in the name of the American National Standards Institute. Requests for interpretations should be addressed to the secretariat or sponsor whose name appears on the title page of this standard.

CAUTION NOTICE: Portions of the American National Standard may be updated at any time under continuous maintenance through the addenda process. The procedures for continuous maintenance are contained in the back of this standard. Future addenda will be published on the IES website, www.ies.org.