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Home My WebLink About1985-05-07; City Council; 8104; CMC 18.12 adopt by ref - National Electrical Code (1984 edition)/I 7 8 g 10 11 12 13 14 15 ORDINANCE NO. 81 04 ordain as follows: SECTION 1: That Title 18, Chapter 18.12 of the Carlsbad Municipal Code is amended to read as follows: SECTION 2: That Title 18, Chapter 18.12, Sections 18.12.230, 18.12.235, 18.12.240, 18.12.240, 18.12.245, 18.12.250, and 18.12.255 of the Carlsbad Municipal Code are amended by the deletion of "Section11 and the insertion of "Article" in their titles when referencing the National Electrical Code. AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF CARLSBAD, CALIFORNIA, AMENDING TITLE 18, CHAPTER 18.12 BY THE AMENDMENT OF VARIOUS SECTIONS AND TO ADOPT BY REFERENCE THE NATIONAL ELECTRICAL CODE (1984 EDITION). The City Council of the City of Carlsbad, California, does 16 17 18 19 20 21 22 23 24 25 26 27 28 Chapter 18.12 ELECTRICAL CODE Sections: I GENERAL REGULATIONS 18.12.010 18.12.230 Article 215-5 amended I1 MODIFICATIONS 18.12.240 Article 225-10 amended 18.12.245 Article 250-26(c) amended 18.12.250 Article 331-3 amended 18.12.255 Article 336-3 amended 18.12.260 Article 350-5 amended Adopted. Diagrams for Feeders. Outside Branch Circuits and Feeders. Grounding Separately Derived Alternating- Current Systems. Electrical Nonmetallic Tubing. Nonmetallic Sheathed Cable. Flexible Metal Conduit. .I. '4 1 2 3 4 5 6 7 a 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 18.12.265 Article 384-3(f) amended Support and Arrangement of Busbars and Conductors. 18.12.010 Adopted. The National Electrical Code (1984 Edition), copyrighted by the National Fire Protection Association is hereby adopted by reference as the electrical code of the City except for the changes, additions, and amendments set forth in this chapter which shall supersede the provisions of said code. 18.12.230 Article 215-5 amended - Diagrams of Feeders. Article 215-5 of the National Electrical Code is amended by the addition of the following: "All horizontal feeders in multiple-occupancy, combustible frame dwellings shall be installed underground or outside the building unless otherwise approved by the administrative authority. A duplex is not considered a multiple-occupancy in this instance.'1 I1 MODIFICATIONS 18.12.240 Article 225-10 amended - Outside Branch Circuits and Feeders. Section 225-10 of the National Electrical Code is amended by the addition of the following: "The installation of outside wiring on roof surfaces shall not be allowed. The installation of outside wiring on surface of building shall have approval of the administrative authority.I1 18.12.245 Article 250-26(c) amended - Grounding Separately Derived Alternatinq-Current Systems. Article 250-26(c) of the ~- National Electrical Code is amended by the addition of the following after the first sentence. "The primary qroundinq method shall be that which is referred to as the 'Uffer Ground' consisting of 20 feet or more of Copper Conductor 84 (minimum) or larger sized from N.E.C. Table 250-94, "Grounding Electrode Conductor for AC Systems". the bottom and a three-inch clearance from the sides of the concrete footing and supported by a Reinforcing Bar 84 or larger completely encased in concrete. When below ground, the copper electrical conductor shall be encased in concrete (or in rigid nonmetallic conduit from six inches inside the concrete footing) to the service equipment. The copper electrode conductor shall be continous and unbroken to its termination at the service connection. The copper conductor shall be placed three inches up from "For single-family residential use only (up to and includinq 200 amp service), the concrete encased electrode (rebar) may be used. The following minimum requirements shall be followed: /// -2- t.. 1 2 3 4 5 6 7 a 9 10 13. 12 13 14 15 1E 9 'r' 1%; :i9 %C 22 2.2 22 2.4 25 26 27 28 1. 2. 3. 4. The Rebar #4 (1/2") or larger to which the grounding electrode conductor is connected must be a minimum of 20 feet long, unbroken, The total developed length of rebar placed three inches up from the bottom of the foundation must be no less than 20 feet. Where splices are necessary to obtain the required 20 feet of rebar, they must be made so that the two bars overlap by no less than 15 inches and are secured by at least two steel tie wires. This splice shall occur at the opposite end from the extended location. The rebar may only extend out of the slab in a dry location, The rebar must extend out of the slab at least six inches and not more than 18 inches and the point of connection of the grounding electrode connector must be accessible. Aluminum or copper-clad aluminum electrode conductor shall not be used in concrete, outside or in any other corrosive environment. I' 18.12.250 Article 331-3 amended - Electrical Nonmetallic Tubing. Article 331-3 of the National Electrical Code is amended ~~~ to read: I1Uses Permitted. Electrical nonmetallic tubing and fittings may be permitted to be used in one- and two-family dwellings, multifamily dwellings, and, with approval of the administrative authority, other structures provided that such dwellings or structures do not exceed three floors above grade: a. In walls, floors, and ceilings; b. In locations where subject to severe corrosive influences as covered in Section 300-6 and where subject to chemicals for which the materials are specifically approved; c. In dry and damp locations not prohibited by Section d. For exposed work where not subject to physical damage; e. Where the potential is 600 volts or less, 331-4; For the purpose of this article, the first floor of a building shall be that floor which is designed for human habitation and which has 50 percent or more of its perimeter level with or above finished grade of the exterior wall line," 18.12.255 Article 336-3 amended - Nonmetallic-Sheathed Cable. Article 336-3 of the National Electrical Code is amended to read as follows: "Uses Permitted or Not Permitted. Type NM and Type NMC cables shall be permitted to be used in one- and two-family dwellings or multifamily dwellings and, with approval of the administrative authority, other structures not exceeding three floors above grade. /// -3- . ,. 1 2 3 4 5 6 7 a 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 For the purpose of this article, the first floor of building shall be that floor which is designed for human habitation and which has 50 percent or more of its perimeter level with or above finished grade. " 18.12.260 Article 350-5 amended - Flexible Metal Conduit. Article 350 -5 of the National Electrical Code is amended to read: "Grounding. Flexible metal conduit shall be permitted as a grounding means where both the conduit and the fittings are approved for grounding. Where an equipment bonding jumper is required around flexible metal conduit, it shall be installed in accordance with Section 250-79. EXCEPTIONS: 1. Flexible metal conduit shall not be 2. Flexible metal conduit shall be permitted as a permitted as a grounding means at any place for an outlet. grounding means if the total length in any ground return path is 6 feet (1.83 m) or less; the conduit is terminated in fittings approved for grounding, and the circuit conductors contained therein are protected by overcurrent devices rated at 20 amperes or less and cannot be extended as an outlet." 18.12.265 Article 384-3(f) amended - Support and Arrangement of Busbars and Conductors. Article 384-3(f) of the National Electrical Code is amended to read as follows: "(f) Phase Arrangement. The phase arrangement on three- phase busses shall be A, B, C from front to back, top to bottom, or left to right, as viewed from the front of the switchboard or panelboard, The C phase shall be that having the higher voltage to ground on 3-phasef 4-wire delta-connected systems. Other busbar arrangements may be permitted for additions to existing installat ions. It EFFECTIVE DATE: This ordinance shall be effective thirty days after its adoption, and the City Clerk shall certify to the adoption of this ordinance and cause it to be published at least once in the Carlsbad Journal within fifteen days after its adoption. INTRODUCED ZiND FIRST READ at a regular meeting of the Carlsbad City Council held on the 16th day of April I 19 85, and thereafter - /// -4- 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1E 11 1E 1s 2c 21 22 2: 24 2E 2E 27 2E PASSED AND ADOPTED at a regular meeting of said Council held on the 7th day of , 19 - 85 , by the following vote to wit: AYES: NOES: None ABSENT: Council Me” Casler, Lewis, Kulchin, Chick and Petthe dL MARY H. CASLER, Mayor ATTEST: ALETHA L. RAUTENKRANZ, Cit@ Clerk (SEAL) -5-