(TA) ANSI ANSI/TIA-942-B-2017 ADVANCING GLOBAL COMMUNICATIONS APPROVED:JULY12,2017 TIASTANDARD Telecommunicationslnfrastructure StandardforDataCenters TIA-942-B July2017 (RevisionofTIA-942-A) TELECOMMUNICATIONS INDUSTRYASSOCIATION tiaonline.org NOTICE TIA Engineering Standards and Publications are designed to serve the public interest through eliminating misunderstandings between manufacturers and purchasers, facilitating interchangeability andimprovementofproducts,andassistingthepurchaserinselectingandobtainingwithminimum delaytheproperproductfortheirparticularneed.Theexistenceof suchStandardsandPublications shall not in any respect preclude any member or non-member of TiA from manufacturing or selling products not conforming to such Standards and Publications. Neither shall the existence of such Standards and Publications preclude their voluntary use by Non-TiA members, either domestically or internationally. Standards and Publications are adopted by TiA in accordance with the American National Standards Institute (ANsl) patent policy. By such action, TIA does not assume any liability to any patent owner, nor does it assume any obligation whatever to parties adopting the Standard or Publication. ThisStandarddoesnotpurporttoaddressall safetyproblemsassociatedwithitsuseorallapplicable safety and health practices and to determine the applicability of regulatory limitations before its use. Any use of trademarks in this document are for information purposes and do not constitute an endorsement by TiA or this committee of the products or services of the company. (From Standards Proposal No. ANSI/TIA-PN-942-B-D1, formulated under the cognizance of the TIA TR-42 Telecommunications Cabling Systems, TR-42.1 Subcommittee on Commercial Building Telecommunications Cabling). Published by TELECOMMUNICATIONSINDUSTRYASSOCIATION TechnologyandStandardsDepartment 1320 N. Courthouse Road, Suite 200 Arlington, VA 22201 U.S.A. PRICE: Please refer to current Catalog of TIATELECOMMUNICATIONSINDUSTRYASSOCIATIONSTANDARDS ANDENGINEERINGPUBLICATIONS or call IHS, USA and Canada (1-877-413-5187)International (303-397-2896) or search online at http:l/www.tiaonline.org/standards/catalogl All rights reserved Printed in U.S.A. NOTICE OF COPYRIGHT This document is copyrighted by the TIA. Reproduction of these documents either in hard copy or soft copy (including posting on the web) is prohibited without copyright permission. For copyright permission to reproduce portions of this document, please contact the TIA Standards Department or go to the TIA website (www.tiaonline.org)fordetails onhowto request permission.Details are located at: http://www.tiaonline.org/standards/catalog/info.cfm#copyright or Telecommunications Industry Association Technology & Standards Department 1320N.CourthouseRoad,Suite200 Arlington, VA 22201 USA +1.703.907.7700 license agreement.For information, contact IHS 15InvernessWayEast Englewood,CO80112-5704 or call USA and Canada (1.800.525.7052) International (303.790.0600) NOTICEOFDISCLAIMERAND LIMITATION OF LIABILITY The document to which this Notice is affixed (the “Document") has been prepared by one or more Engineering Committees or Formulating Groups of the Telecommunications Industry Association ("TIA"). TIA is not the author of the Document contents,but publishes and claims copyright to the Document pursuant to licenses and permission granted by the authors of the contents. TIA Engineering Committees and Formulating Groups are expected to conduct their affairs in accordance with the TIA Procedures for American National Standards and TIA Engineering Committee Operating Procedures, the current and predecessor versions of which are available at http:/www.tiaonline.org/standards/ec-procedures)/TIA's function is to administer the process, but not the content, of document preparation in accordance with the Manual and, when appropriate, the policies and procedures of the American National Standards Institute ("ANSI"). TIA does not evalua