NFPA 70-2017 National Electrical Code (Effective Date 8 24 2016).pdf

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1、2017 NFPA 70 National Electrical Code International Electrical Code Series 1 2 3 4 5 LSC 20 19 18 17 16 ISBN: 978-145591277-3 (SB Print) ISBN: 978-145591278-0 (LL Print) ISBN: 978-145591279-7 (Spiral Print) ISBN: 978-145591280-3 (PDF) Copyright 2016 National Fire Protection Association One Batteryma

2、rch Park Quincy, Massachusetts 02169-7471 NFPA, NFPA 70, National Fire Protection Association, National Electrical Code, and NEC are registered trademarks of the National Fire Protection Association. IMPORTANT NOTICES AND DISCLAIMERS CONCERNING NFPA STANDARDS NOTICE AND DISCLAIMER OF LIABILITY CONCE

3、RNING THE USE OF NFPA STANDARDS NFPA codes, standards, recommended practices, and guides (“NFPA Standards”), of which the document contained herein is one, are developed through a consensus standards development process approved by the American National Standards Institute. This process brings toget

4、her volunteers representing varied viewpoints and interests to achieve consensus on fire and other safety issues. While the NFPA administers the process and establishes rules to promote fairness in the development of consensus, it does not independently test, evaluate, or verify the accuracy of any

5、information or the soundness of any judgments contained in NFPA Standards. The NFPA disclaims liability for any personal injury, property or other damages of any nature whatsoever, whether special, indirect, consequential or compensatory, directly or indirectly resulting from the publication, use of

6、, or reliance on NFPA Standards. The NFPA also makes no guaranty or warranty as to the accuracy or completeness of any information published herein. In issuing and making NFPA Standards available, the NFPA is not undertaking to render professional or other services for or on behalf of any person or

7、entity. Nor is the NFPA 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 gi

8、ven circumstances. The NFPA has no power, nor does it undertake, to police or enforce compliance with the contents of NFPA Standards. Nor does the NFPA list, certify, test, or inspect products, designs, or installations for compliance with this document. Any certification or other statement of compl

9、iance with the requirements of this document shall not be attributable to the NFPA and is solely the responsibility of the certifier or maker of the statement. ALERT: THIS STANDARD HAS BEEN MODIFIED BY A TIA OR ERRATA Users of NFPA codes, standards, recommended practices, and guides (“NFPA Standards

10、”) should be aware that NFPA Standards may be amended from time to time through the issuance of Tentative Interim Amendments or corrected by Errata. An official NFPA Standard at any point in time consists of the current edition of the document together with any Tentative Interim Amendment and any Er

11、rata then in effect. In order to determine whether an NFPA Standard has been amended through the issuance of Tentative Interim Amendments or corrected by Errata, visit the “Codes email: stds_adminnfpa.org For more information about NFPA, visit the NFPA website at www.nfpa.org. All NFPA codes and sta

12、ndards can be viewed at no cost at www.nfpa.org/docinfo.NFPA 70, National Electrical Code, NFPA, and National Fire Protection Association are registered trademarks of the National Fire Protection Association, Quincy, Massachusetts, 02169 Copyright 2016 National Fire Protection Association . All Righ

13、ts Reserved. NFPA 70 National Electrical Code 2017 Edition This edition of NFPA 70, National Electrical Code, was prepared by the National Electrical Code Committee and acted on by NFPA at its June Association Technical Meeting held June 1316, 2016, in Las Vegas, NV. It was issued by the Standards C

14、ouncil on August 4, 2016, with an effective date of August 24, 2016, and supersedes all previous editions. This document has been amended by one or more Tentative Interim Amendments (TIAs) and/or Errata. See “Codes Conduit Bodies; Fittings; and Handhole Enclosures 70 175Part I. Scope and General . 7

15、0 175Part II. Installation 70 175Part III. Construction Specications 70 181Part IV. Pull and Junction Boxes, Conduit Bodies, and Handhole Enclosures for Use on Systems over 1000 Volts, Nominal . 70 181 320 Armored Cable: Type AC . 70 182Part I. General . 70 182Part II. Installation 70 182Part III. C

16、onstruction Specications 70 183 322 Flat Cable Assemblies: Type FC . 70 183Part I. General . 70 183Part II. Installation 70 184Part III. Construction Specications . 70 184 324 Flat Conductor Cable: Type FCC 70 184Part I. General . 70 184Part II. Installation 70 185Part III. Construction Specications

17、 . 70 186 326 Integrated Gas Spacer Cable: Type IGS 70 186Part I. General . 70 186Part II. Installation 70 186Part III. Construction Specications 70 186 328 Medium Voltage Cable: Type MV . 70 187Part I. General . 70 187Part II. Installation 70 187Part III. Construction Specications 70 188 330 Metal-Clad Cable: Type MC . 70 188Part I. General . 70 188Part II. Installation 70 188Part III. Construction Specications 70 189 332 Mineral-Insulated, Metal-Sheathed Cable: Type MI 70 189

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