NFPA 70E-2018 Standard for Electrical Safety in the Workplace (Effective Date 08 21 2017).pdf

1、ISBN: 978-145591671-9 (Print) ISBN: 978-145591672-6 (PDF) ISBN: 978-145591782-2 (eBook) IMPORTANT NOTICES AND DISCLAIMERS CONCERNING NFPA STANDARDS NOTICE AND DISCLAIMER OF LIABILITY CONCERNING THE USE OF NFPA STANDARDS NFPA codes, standards, recommended practices, and guides (“NFPA Standards”), of

2、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 together volunteers representing varied viewpoints and interests to achieve consensus on fire and other safety issues

3、. 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 information or the soundness of any judgments contained in NFPA Standards. The NFPA disclaims liability for any

4、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, or reliance on NFPA Standards. The NFPA also makes no guaranty or warranty as to the accuracy or completeness

5、 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 entity. Nor is the NFPA undertaking to perform any duty owed by any person or entity to someone else. Anyone us

6、ing 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. The NFPA has no power, nor does it undertake, to police or enforce compliance with the conte

7、nts 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 compliance with the requirements of this document shall not be attributable to the NFPA and is solely the responsibi

8、lity of the certifier or maker of the statement. See ALERT ALERT: THIS STANDARD HAS BEEN MODIFIED BY A TIA OR ERRATA Users of NFPA codes, standards, recommended practices, and guides (“NFPA Standards”) should be aware that NFPA Standards may be amended from time to time through the issuance of a Ten

9、tative Interim Amendment (TIA) or corrected by Errata. An official NFPA Standard at any point in time consists of the current edition of the document together with any TIAs and Errata then in effect. To determine whether an NFPA Standard has been amended through the issuance of TIAs or corrected by

10、Errata, go to www.nfpa.org/docinfo to choose from the list of NFPA Standards or use the search feature to select the NFPA Standard number (e.g., NFPA 13). The document information page provides up-to- date document-specific information as well as postings of all existing TIAs and Errata. It also inc

11、ludes the option to register for an “Alert” feature to receive an automatic email notification when new updates and other information are posted regarding the document. REVISION SYMBOLS IDENTIFYING CHANGES FROM THE PREVIOUS EDITION Text revisions are shaded. A before a section number indicates that

12、words within that section were deleted and a to the left of a table or figure number indicates a revision to an existing table or figure. When a chapter was heavily revised, the entire chapter is marked throughout with the symbol. Where one or more sections were deleted, a is placed between the rema

13、ining sections. Chapters, annexes, sections, figures, and tables that are new are indicated with an N . Note that these indicators are a guide. Rearrangement of sections may not be captured in the markup, but users can view complete revision details in the First and Second Draft Reports located in t

14、he archived revision information section of each code at www.nfpa.org/docinfo. Any subsequent changes from the NFPA Technical Meeting, Tentative Interim Amendments, and Errata are also located there.IMPORTANT NOTICES AND DISCLAIMERS CONCERNING NFPA STANDARDS ADDITIONAL NOTICES AND DISCLAIMERS Updati

15、ng of NFPA Standards Users of NFPA codes, standards, recommended practices, and guides (“NFPA Standards”) should be aware that these documents may be superseded at any time by the issuance of new editions or may be amended from time to time through the issuance of Tentative Interim Amendments or cor

16、rected by Errata. An ofcial NFPA Standard at any point in time consists of the current edition of the document together with any Tentative Interim Amendments and any Errata then in effect. In order to determine whether a given document is the current edition and whether it has been amended through t

17、he issuance of Tentative Interim Amendments or corrected through the issuance of Errata, consult appropriate NFPA publications such as the National Fire Codes Subscription Service, visit the NFPA website at www.nfpa.org, or contact the NFPA at the address listed below. Interpretations of NFPA Standa

18、rds A statement, written or oral, that is not processed in accordance with Section 6 of the Regulations Governing the Development of NFPA Standards shall not be considered the ofcial position of NFPA or any of its Committees and shall not be considered to be, nor be relied upon as, a Formal Interpre

19、tation. Patents The NFPA does not take any position with respect to the validity of any patent rights referenced in, related to, or asserted in connection with an NFPA Standard. The users of NFPA Standards bear the sole responsibility for determining the validity of any such patent rights, as well a

20、s the risk of infringement of such rights, and the NFPA disclaims liability for the infringement of any patent resulting from the use of or reliance on NFPA Standards. NFPA adheres to the policy of the American National Standards Institute (ANSI) regarding the inclusion of patents in American Nation

21、al Standards (“the ANSI Patent Policy”), and hereby gives the following notice pursuant to that policy: NOTICE: The users attention is called to the possibility that compliance with an NFPA Standard may require use of an invention covered by patent rights. NFPA takes no position as to the validity o

22、f any such patent rights or as to whether such patent rights constitute or include essential patent claims under the ANSI Patent Policy. If, in connection with the ANSI Patent Policy, a patent holder has led a statement of willingness to grant licenses under these rights on reasonable and nondiscrim

23、inatory terms and conditions to applicants desiring to obtain such a license, copies of such led statements can be obtained, on request, from NFPA. For further information, contact the NFPA at the address listed below. Law and Regulations Users of NFPA Standards should consult applicable federal, st

24、ate, and local laws and regulations. NFPA does not, by the publication of its codes, standards, recommended practices, and guides, intend to urge action that is not in compliance with applicable laws, and these documents may not be construed as doing so. Copyrights NFPA Standards are copyrighted. Th

25、ey are made available for a wide variety of both public and private uses. These include both use, by reference, in laws and regulations, and use in private self-regulation, standardization, and the promotion of safe practices and methods. By making these documents available for use and adoption by p

26、ublic authorities and private users, the NFPA does not waive any rights in copyright to these documents. Use of NFPA Standards for regulatory purposes should be accomplished through adoption by reference. The term “adoption by reference” means the citing of title, edition, and publishing information

27、 only. Any deletions, additions, and changes desired by the adopting authority should be noted separately in the adopting instrument. In order to assist NFPA in following the uses made of its documents, adopting authorities are requested to notify the NFPA (Attention: Secretary, Standards Council) i

28、n writing of such use. For technical assistance and questions concerning adoption of NFPA Standards, contact NFPA at the address below. For Further Information All questions or other communications relating to NFPA Standards and all requests for information on NFPA procedures governing its codes and

29、 standards development process, including information on the procedures for requesting Formal Interpretations, for proposing Tentative Interim Amendments, and for proposing revisions to NFPA standards during regular revision cycles, should be sent to NFPA headquarters, addressed to the attention of

30、the Secretary, Standards Council, NFPA, 1 Batterymarch Park, P.O. Box 9101, Quincy, MA 02269-9101; email: stds_adminnfpa.org. For more information about NFPA, visit the NFPA website at www.nfpa.org. All NFPA codes and standards can be viewed at no cost at www.nfpa.org/docinfo.NFPA 70E, Standard for

31、Electrical Safety in the Workplace, NFPA, and National Fire Protection Association are registered trademarks of the National Fire Protection Association, Quincy, Massachusetts 02169. Copyright 2017 National Fire Protection Association . All Rights Reserved. NFPA 70E Standard for Electrical Safety in

32、 the Workplace 2018 Edition This edition of NFPA 70E , Standard for Electrical Safety in the Workplace , was prepared by the Technical Committee on Electrical Safety in the Workplace and released by the Correlating Committee on National Electrical Code . It was issued by the Standards Council on Aug

33、ust 1, 2017, with an effective date of August 21, 2017, and supersedes all previous editions. This document has been amended by one or more Tentative Interim Amendments (TIAs) and/or Errata. See “Codes Part II, Safety- Related Work Practices; Part III, Safety-Related Maintenance Requirements; and Pa

34、rt IV, SafetyELECTRICAL SAFETY IN THE WORKPLACE 2018 Edition Requirements for Special Equipment. It was not considered essential for all of the parts to be completed before the standard was published and made available. Each part was recognized as being an important aspect of electrical safety in th

35、e workplace, but the parts were sufciently independent of each other to permit their separate publication. The rst edition of NFPA 70E, Standard for Electrical Safety Requirements for Employee Workplaces, was published in 1979 and included only Part I, Installation Safety Requirements. The second ed

36、ition published in 1981 included a new Part II, Safety-Related Work Practices. In 1983, the third edition added a new Part III, Safety-Related Maintenance Requirements. In 1988, the fourth edition was published with only minor revisions. The 1995 edition included major revisions to Part I to conform

37、 to the 1993 edition of the NEC. The concepts of “limits of approach“ and establishment of an “arc“ were introduced in Part II. In 2000, the sixth edition included an update of Part I to the 1999 NEC, as well as a new Part IV, Safety Requirements for Special Equipment. Part II continued to focus on

38、establishing ash protection boundaries and the use of personal protective equipment (PPE). Also, charts were added to Part II to assist in applying appropriate protective clothing and personal protective equipment for common tasks. The 2004 edition presented several signicant changes. The major chan

39、ges emphasized safe work practices. Clarity and usability of the document were also enhanced. The title was changed to Standard for Electrical Safety in the Workplace. The document was reformatted to comply with the National Electrical Code Style Manual. The existing parts were renamed as chapters a

40、nd were reorganized with the safety-related work practices relocated to the front of the document to highlight the emphasis, followed by safety-related maintenance requirements, safety requirements for special equipment, and safety-related installation requirements. The chapter on safety-related wor

41、k practices also was reorganized to emphasize that working on live parts is the last alternative work practice. An energized electrical work permit and related requirements were incorporated into the document. This standard is compatible with the NEC but is not intended to be used, nor can it be use

42、d, in lieu of the NEC. Chapter 4, Specic Purpose Equipment and Installations, was intended to serve a very specic need of OSHA. It was not intended to be applied as a design, installation, modication, or construction standard for an electrical installation or system. Its content was intentionally li

43、mited in comparison to the NEC in order to apply to an electrical installation or a system as part of an employees workplace. Chapter 4 was updated to correlate with the 2002 edition of the NEC, but requirements not directly associated with employee safety were not included. Omission of NEC requirem

44、ents did not affect the NEC, nor were omitted requirements considered as unimportant. They are essential to the NEC and its intended application that is, its use by those who design, install, and inspect electrical installations. NFPA 70E, on the other hand, is intended for use by employers, employe

45、es, and OSHA. Requirements were upgraded throughout the 2009 edition. Chapter 4 was deleted because it was a duplicate of NEC installation requirements. Article 350 was added for R&D facilities. Other changes included signicant revisions to Annex D, Annex F, and Annex J and the addition of Annex M,

46、Annex N, and Annex O. The 2012 edition marked another waypoint as this standard continued to evolve to meet the electrical safety needs of employers and employees. New research, new technology, and technical input from users provided the foundation for new and revised requirements that addressed the

47、 electrical hazards encountered by employees in current workplaces. Expanded or claried requirements, inclusion of technical material not previously covered, and removal of requirements related to the safe installation of electrical equipment rather than being safe electrical work practices were som

48、e of the major actions undertaken during the revision cycle. In addition, requirements covering the separate but directly related concepts of hazard identication and risk assessment were revised to clarify the concepts. A signicant revision to Annex F provided extensive coverage of this topic to ass

49、ist users with implementing effective hazard identication and risk assessment procedures. Annex P on aligning NFPA 70E implementation with occupational health and safety management standards was added. The majority of changes occurred in Chapter 1. Article 105, Application of Safety-Related Work Practices, and a requirement for hearing protection when working within an arc ash boundary were added, as were work practice requirements on the use of GFCIs to protect employees. Clarication was made that Article 130 applies whether incident energy ana