(A) There is hereby adopted by the City of Mt. Vernon, Illinois that certain Electrical Code, NFPA 70: National Electric Code, 2008 Edition, issued by the National Fire Protection Association, at least one copy of which is on file with the City Clerk, and the same is hereby adopted and incorporated herein and so set out in full; and, from the date of which this Ordinance shall take effect, the provisions thereof shall be controlling in the installation, alteration, and use of electrical equipment within the City of Mt. Vernon and on any City property that may be located outside the corporate limits.
(B) Any part of said Code which may be in conflict with this Ordinance is hereby superseded. It shall be unlawful for any person, firm or corporation to use any electrical device that does not comply with said Code.
(C) The following Articles of the National Electrical Code are hereby amended or superseded as follows:
(1) Article 230.70: All commercial buildings shall have a separate outside main disconnect to the electrical system.
(2) Article 230.79 and Article 230.42: Other than one and two-circuit installations as stated in Code, all services shall have a minimum rating of 100 amps.
(3) Article 230.50: Only heavy wall rigid metallic conduit or schedule 80 rigid non-metallic conduit shall be used up to the service disconnect/over-current device.
(4) Article 250.50 and Article 250.52: Grounding electrodes for all services shall consist of a 5/8” x 8’ (minimum) copperweld ground rod installed vertically (in ground with at least 12” of clearance from foundation wall and a minimum of 6” ground cover).
(5) Article 210.8: Ground-fault circuit-interrupter protection for personnel is required in all types of buildings as stated in Article 210.8 (1-8).
(6) Article 334.10: Type NM and NMC cables shall be permitted only in residential dwellings, except as prohibited in 334.12. Exception: garages and storage buildings incidental to residential use.
(7) Article 310.2 (b): Conductor Material - all conductors in this article shall be copper.
(8) Article 210.4: All branch circuits shall include an equipped grounding conductor identified as described in 210.5(b). The Electrical Inspector, upon inspection, may order the installation of such conductor in the event of its absence.
(9) Article 406.9: Where an equipment grounding conductor does not exist in the receptacle enclosure and it is impossible to install such conductor to meet Code, a ground fault circuit interrupter type of receptacle shall be used.
(10) Article 394: Concealed knob-and-tube wiring shall not be permitted for new or existing installations. Upon inspection, the Electrical Inspector may order the removal and/or replacement of such wiring with an approved method.
(11) Article 210.19.1: Branch-circuit conductors supplying loads other than cooking appliances as covered in Paragraph C above and as listed in 210.2 shall have any ampacity sufficient for the loads served and shall not be smaller than #12. Exception: Switch legs that serve single lighting fixtures of a current rating which would not exceed rating of conductor may be of #14 AWG.
(12) Article 230.90: Services - Screw shell fuse panels shall not be allowed for services or distribution panels.
(13) Article 230.50 (B): Service entrance cable shall be installed in heavy wall rigid metal conduit or schedule 80 non-metallic conduit up to service disconnect/over-current device.
(14) Article 230.28: The minimum size conduit extending vertically above the meter enclosure on overhead service drops shall be 1-1/4” trade size.
(Prior Code, Art. 7, § 7.2)