§ 12-401. Electrical code adopted.  


Latest version.
  • i.

    Pursuant to authority granted by T.C.A. §§ 6-54-501—6-54-506 and for the purpose of providing practical minimum standards for the safeguarding of persons and of buildings and their contents from hazards arising from the use of electricity for light, heat, power, radio, signaling, or for other purposes, the National Electrical Code (NFPA 70), 2017 edition, as prepared by the National Fire Protection Association, is hereby adopted and incorporated by reference as a part of this code and is hereinafter referred to as the electrical code. Pursuant to the requirements of T.C.A. § 6-54-502, one copy of the electrical code has been placed on file in the recorder's office and shall be kept there for the use and inspection of the public.

    ii.

    Modifications.

    (a)

    Article 300-50 along with Table 300-50 of the 2017 edition of the National Electrical Code is deleted in its entirety and the following substituted therefore:

    Article 300-50. Underground installations.

    Underground conductors shall be identified for the voltage and conditions under which they are installed.

    All underground conductors with a potential of more than six hundred (600) volts shall be installed in:

    (1)

    Rigid metal conduit at a minimum depth of thirty-six (36) inches; or

    (2)

    Schedule forty (40) nonmetallic conduit encased in a minimum of two (2) inches of concrete at a minimum depth of thirty-six (36) inches; or

    (3)

    Schedule eighty (80) nonmetallic conduit at a minimum depth of forty-two (42) inches. All depth measurements are to top of conduits.

    These minimum depth requirements may be reduced six (6) inches for each two (2) inches of concrete or equivalent protection placed in the trench over the underground installation. Lesser depths shall be permitted where conductors rise for terminations or splices or where access is required.

    Special permission may be obtained for lesser depths where solid rock is encountered.

    (b)

    The 2017 amendments to Chapter 0780-2-1 of the Tennessee Department of Commerce and Insurance, Division of Fire Prevention, Rules Regarding Electrical Installations are hereby adopted by reference.

( Ord. No. 3568, 10-18-2016 ; Ord. No. 3614, 9-4-2018 )