HomeMy WebLinkAbout2002-10-08; City Council; NS-640; Adopt by Reference the California Electrical Code...1
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ORDINANCE NO. NS-640
AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF CARLSBAD,
CALIFORNIA, AMENDING TITLE 18 CHAPTER 18.12, TO ADOPT BY
REFERENCE THE CALIFORNIA ELECTRICAL CODE (2001 EDITION).
The City Council of the City of Carlsbad, California, does ordain as follows:
SECTION 1: That Title 18, chapter 18.12 of the Carlsbad Municipal Code Section
18.08.01 0 is amended to read as follows:
18.12.010 Adootion. The California Electrical Code 2001 Edition, copyrighted by the
National Fire Protection Association, is adopted by reference as the City Electrical Code.
SECTION 2: That Title 18, chapter 18.12 of the Carlsbad Municipal Code Section
18.08.245 is amended to read as follows:
18.1 2.245 Article 250-52(c) - Concrete encased electrode amended. Article 250-52(c) -
of the National Electric Code is amended to read:
The primary grounding method shall be that which is referred to as the “Ufer Ground consisting
of 20 feet or more of Copper Conductor #4 (minimum) or larger sized from N.E.C. Table 250-
94, “Grounding Electrode Conductor for AC Systems.” The copper conductor shall be placed
three inches up from the bottom and a three-inch clearance from the sides of the concrete
footing and supported by a Reinforcing Bar #4 or larger completely encased in concrete. When
below ground, the copper grounding 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 continuous and unbroken to its termination at the service
connection.
For single-family residential use only (up to and including 200 amp service), the concrete
encased electrode (rebar) may be used subject to the following requirements:
1. The Rebar #4, 1/2 diameter or larger, to which the grounding electrode conductor is
connected must be a minimum of 20 feet long, unbroken.
2. 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, 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. The splice shall occur at the opposite end from the extended location.
3. The rebar may only extend out of the slab in a dry location.
4. 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.
Section 18.08.247 is amended to read as follows:
SECTION 3: That Title 18, chapter 18.12 of the Carlsbad Municipal Code
18.1 2.247 Article 250-1 18 amended-- Types of equipment grounding conductors.
Article 250-1 18 is amended to read:
The equipment grounding conductor run with, or enclosing the circuit conductors shall be
one or more, or a combination of the following: \?
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1. A copper or other corrosion resistant conductor. This conductor shall be solid or
stranded, insulated, covered or bare, and in the form of a wire or a busbar of any shape.
2. Rigid metal conduit.
3. Intermediate metal conduit.
4. Electrical metallic conduit.
5. Cable trays as permitted in Section 318-3(c) and 318-7.
6. Cable bus framework as permitted in Section 365-2(a).
All flexible metal conduits, Type AC cables, Type MC cables, mineral insulated metal
sheathed cables, and non-metallic conduit systems shall have equipment ground
conductors run with the circuit conductors.
Exception No. 1: Flexible metal conduit and flexible metallic tubing shall be permitted for
grounding if all the following conditions are met:
a. The length in any ground return path does not exceed 6 feet (1.83 m).
b. The circuit conductors contained therein are protected by overcurrent devices rated at
20 amperes or less.
c. The conduit or tubing is terminated in fittings listed for grounding.
Exception No. 2: Liquidtight flexible metal conduit shall be permitted as a grounding
path is 6 feet (1.82111) or less, the conduit is terminated in fittings listed for grounding, and
means in the 11/4-inch and smaller trade sizes if the total length of any ground return
the circuit conductors contained therein are protected by overcurrent devices rated at 20
amperes or less for 3/8-inch and 1/2-inch trade sizes and 60 amperes or less for 3/4-inch
through 1 l/4-inch trade sizes.
Exception No. 3: For direct-current circuits only, the equipment grounding conductor shall
be permitted to be run separately from the circuit conductors.
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Ord. No. NS-640 2
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EFFECTIVE DATE: This ordinance shall be effective on November 1, 2002, and the
City Clerk shall certify to the adoption of this ordinance and cause it to be published in a
newspaper of general circulation within the city within fifteen days after its adoption.
INTRODUCED AND FIRST READ at a regular meeting of the Carlsbad City Council
held on the 1st day of OCTOBER , 2002 and thereafter
PASSED AND ADOPTED at a regular meeting of said City Council held on the
8th day of OCTOBER ,2002, by the following vote, to wit:
AYES: Council Members Lewis, Kulchin, Finnila, Nygaard, Hall
NOES: None
ABSENT: None
APPROVED AS TO FORM AND LEGALITY
ATTEST:
(SEAL)
Ord. No. NS-640 3