HomeMy WebLinkAbout2005-07-05; City Council; NS-758; Adopt 2004 California Electrical Code...1
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ORDINANCE NO. NS - 758
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 (2004
EDITION).
The City Council of the City of Carlsbad, California, does ordain as follows:
SECTION 1: WHEREAS, the City of Carlsbad has a damp marine climate and this
has shown to cause premature deterioration of metal conduit installed on roof surfaces.
The local climate can also cause flexible metal conduit to rust prematurely and thereby
increase impedance to ground when the conduit is the sole means of grounding. The
locally alkaline soil conditions can cause premature deterioration of a rebar Ufer ground.
The City finds that certain modifications to the California Electric Code are necessary to
assure safe electrical systems installed throughout the City.
SECTION 2: That Title 18, chapter 18.1 2 of the Carlsbad Municipal Code Section
18.1 2.01 0 is amended to read as follows:
18.1 2.01 0 Adoption. The California Electrical Code 2004 Edition, copyrighted by
the National Fire Protection Association, is adopted by reference as the city electrical
code.
SECTION 3: That Title 18, Chapter 18.1 2 of the Carlsbad Municipal Code Section
18.1 2.230 is amended to read as follows:
18.12.230 Article 215.5 amended- Diaarams of feeders. Article 215.5 of the
California 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.”
SECTION 4: That Title 18, Chapter 18.12 of the Carlsbad Municipal Code Section
18.1 2.240 is amended to read as follows:
18.12.240 Article 225.10 amended- Wiring on buildinqs. Article 225.10 of the
California 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.
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SECTION 5: That Title 18, Chapter 18.12 of the Carlsbad Municipal Code Section
18.1 2.241 is deleted.
SECTION 6: That Title 18, Chapter 18.12 of the Carlsbad Municipal Code
Section 18.12.245 is amended to read as follows:
18.1 2.245 Article 250.52(3) - Concrete encased electrode amended. Article
250.52(3) - of the California Electrical 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 250-66, “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 qf 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.
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SECTION 7: That Title 18, Chapter 18.12 of the Carlsbad Municipal Code Section
18.1 2.246 is deleted.
SECTION 8: That Title 18, Chapter 18.12 of the Carlsbad Municipal Code
18.12.247 Article 250.1 18 amended-- Types of equipment grounding conductors.
Section 18.1 2.247 is amended to read as follows:
Article 250.1 18 of the California Electrical Code 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:
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 392.3 (c) and 392.7
6. Cable bus framework as permitted in Section 370.3
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
means in the 11/4-inch and smaller trade sizes if the total length of any ground return path
is 6 feet (1.82m) or less, the conduit is terminated in fittings listed for grounding, and 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 11/4-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.
SECTION 9: That Title 18, Chapter 18.12 of the Carlsbad Municipal Code
Section 18.1 2.250 is amended to read as follows:
18.12.250 Article 362.1 O(2) amended-Electrical nonmetallic tubing. Article
362.1 O(2) of the California Electrical Code is amended to read:
The use of electrical nonmetallic tubing and fittings shall be permitted concealed within walls and floors, where the walls and floors provide a thermal barrier of material
which has at least a 15-minute finish rating as identified in listings of fire-rated assemblies
and there is a continuous ground cable from the main panel throughout the system.
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SECTION 10: That Title 18, Chapter 18.12 of the Carlsbad Municipal Code
Section 18.1 2.251 is amended to read as follows:
18.12.251 Article 320.12 amended - Uses not permitted. Article 320.12 of the
California Electrical Code is amended to read:
Type A.C. cable shall not be used in Group A, B, E, H, I, M and S occupancies as defined in the Uniform Building Code; (Non-residential buildings).
Exception to Non-residential Buildings Only: A complete factory designed and
assembled A.C. Cable Electrical System for lighting or movable walls and U.L. approved
may be used with approval of the Building Official.
SECTION 11: That Title 18, Chapter 18.12 of the Carlsbad Municipal Code
Section 18.1 2.252 is amended to read as follows:
18.1 2.252 Article 330.1 08 amended- Groundinq. Article 330.1 08 of the California
Type MC cable shall provide an equipment grounding conductor run with the
SECTION 12: That Title 18, Chapter 18.12 of the Carlsbad Municipal Code
Electrical Code is amended to read:
circuit conductors.
Section 1 8.12.255 is amended to read as follows:
18.12.255 Article 334.1 0 amended- Nonmetallic-sheathed cable. Article 334.1 0 of
the California Electrical Code is amended to read:
Uses Permitted or Not Permitted. Type NM and Type NMC cables shall be
permitted to be used in one and two-family dwellings or multi-family dwellings and, with
approval of the administrative authority, other structures not exceeding three floors above
grade as defined in the California Building Code.
SECTION 13: That Title 18, Chapter 18.12 of the Carlsbad Municipal Code
Section 18.1 2.260 is amended to read as follows:
18.1 2.260 Article 348.60 amended- Flexible metal conduit. Article 348.60 of the
California 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 250.1 02.
EXCEPTIONS: 1. Flexible metal conduit shall not be permitted as a grounding means at
any place for an outlet.
2. Flexible metal conduit shall be permitted as a 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.
SECTION 14: That Title 18, Chapter 18.12 of the Carlsbad Municipal Code
Section 18.1 2.265 is deleted.
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SECTION 15: That Title 18, Chapter 18.12 of the Carlsbad Municipal Code
Section 1 8.12.270 is deleted.
EFFECTIVE DATE: This ordinance shall be effective on August 1, 2005, 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 14th day of JUNE , 2005 and thereafter
PASSED AND ADOPTED at a regular meeting of said City Council held on the
- 5th day of JULY , 2005, by the following vote, to wit:
AYES:
NOES:
ABSENT:
Council Members Lewis, Kulchin, Packard, Sigafoose
None
Council Member Hall
APPROVED AS TO FORM AND LEGALITY
ATTEST:
LORRAINE M. WOOuCity Clerk
(SEAL)