1、 Errata NFPA 70National Electrical Code2017 Edition Reference: 392.80(A)(1)(a) Errata No: 70-17-4 Code-Making Panel 8, and the Correlating Committee on National Electrical Code note the following errors in the 2017 edition of NFPA 70, National Electrical Code. 1. Update reference in 392.80(A)(1)(a)
2、to read as follows: 392.80 Ampacity of Conductors. (A) Ampacity of Cables, Rated 2000 Volts or Less, in Cable Trays. Informational Note: See 110.14(C) for conductor temperature limitations due to termination provisions. (1) Multiconductor Cables. The allowable ampacity of multiconductor cables, nomi
3、nally rated 2000 volts or less, installed according to the requirements of 392.22(A) shall be as given in Table 310.15(B)(16) and Table 310.15(B)(18), subject to the provisions of (A)(1)(a), (b), (c), and 310.15(A)(2). (a) The adjustment factors of 310.15(A)(3)(a) 310.15(B)(3)(a) shall apply only to
4、 multiconductor cables with more than three current-carrying conductors. Adjustment factors shall be limited to the number of current-carrying conductors in the cable and not to the number of conductors in the cable tray. Issue Date: March 13, 2017 (Note: Electronic products and pamphlet reprints may have this errata incorporated. For current information about the NFPA Codes and Standards, including this errata, please see www.nfpa.org/docinfo) Copyright 2017 All Rights Reserved NATIONAL FIRE PROTECTION ASSOCIATION
