HomeMy WebLinkAboutOrd 193-2005 NCTCOG Electric Code Amendments.pdfCITY OF ANNA, TEXAS
ORDINANCE NO. 193-2005
AN ORDINANCE OF THE CITY OF ANNA, TEXAS, AMENDING ORDINANCE
NO. 2002-43 BY ADOPTING THE 2002 EDITION OF THE NATIONAL
ELECTRICAL CODE; ADOPTING THE NORTH CENTRAL TEXAS COUNCIL
OF GOVERNMENTS RECOMMENDED AMENDMENTS TO THE 2002
NATIONAL ELECTRIC CODE; PROVIDING A REPEALER CLAUSE;
PROVIDING A SAVINGS CLAUSE; AND PROVIDING FOR AN EFFECTIVE
DATE
WHEREAS, the City Council has determined the need for revising the City's existing electrical
code; and
WHEREAS, the City Council has received recommendations for said revisions from qualified
professionals in the building inspection trade; and
WHEREAS, the City Council desires to adopt and implement said recommendations; now
therefore
BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF ANNA, TEXAS:
Section 1. National Electrical Code Adopted.
The city council hereby adopts the 2002 Edition of the National Electrical Code, replacing the
1999 Edition of the National Electrical Code, adopted by Ordinance No. 2002-43.
Section 2 Amendments
The City Council hereby adopts the North Central Texas Council of Governments
Recommended Amendments to the 2002 National Electrical Code, attached hereto as Exhibit
A and made an integral part of this ordinance.
Section 3 Repeal Clause
All parts of any ordinance in conflict with the provisions of this ordinance are to the extent of
such conflict hereby repealed.
Section 4 Savings Clause
If any provision of this ordinance shall be held to be invalid or unconstitutional, the remainder
of such ordinance shall continue in full force and effect the same as if such invalid or
ORD 193-2005 NCTCOG Amdts-Nati Elec Code.doc Page 1 of 2 02-22-2005
unconstitutional provision had never been a part hereof.
Section 5 Effective Date
This ordinance shall be effective upon the posting and/or publication of its caption as required
by law and the City Secretary is hereby directed to implement such posting and/or publication.
PASSED by the City Council of the City of Anna, Texas, this 22nd day of February, 2005.
APPROVED: ATTESTED:
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rowrio mi, w4wo,City Se6etary
ORD 193-2005 NCTCOG Amdts-Nati Elec Code.doc Page 2 of 2 02-22-2005
Recommended Amendments to the
2002 National Electrical Code
North Central Texas Council of Governments Region
REGIONAL AMENDMENTS'
"Section 230.2(A) add a sixth special condition.
230.2 Number of Services. A building or other structure served shall be supplied by only one service
unless permitted in 230.2(A) through (D). For the purpose ... (text unchanged)... shall be considered to be
supplying one service.
(A) Special Conditions. Additional services shall be permitted to supply the following:
(1) Fire Pumps
same location.
b. Each lateral or overhead service drop originates from the same point of service.
REASON FOR CHANGE: This is currently the accepted installation practice of the region. No noteworthy
complaints have surfaced. It is more reasonable than the current NEC requirements. It allows more than
six disconnects grouped at one location, without having to divide the structure into multiple buildings by
using area separation walls. This also allows designers more flexibility in the placement of electrical meters
and main service disconnects.
"`Section 230.71(A) add an exception.
230.71 Maximum Number of Disconnects.
(A) General. The service disconnecting means for each service permitted by 230.2, or for each set of
servioeentranoe conductors permitted by 230.40, Exception Nos. 1, 3, 4, or 5, shall consist of not more than
six switches or sets of circuit breakers, mounted in a single enclosure, in a group of separate enclosures, or
in or on a switchboard. There shall be no more than six sets of disconnects per service grouped in any one
location. For the purpose ... (text unchanged)... shall not be considered a service disconnecting means.
Exception: Mufti -occupant Buildings. Individual servioe disconnectira means is limited to six for each
occupant. The number of individual disconnects atone location may exceed six.
REASON FOR CHANGE: The same reasoning as for multi -family dwellings in Section 230-2 here being
applied to multimoccupant buildings.
'NOTE: Undedinino indicates new words and phrases to be added to the 2002 National Electrical Code.
St ikeeuAs indicate existing words and phrases to be deleted.
North Central Texas 1 Of 5 2/27/03
2002 NEC Amendments
"Section 250.52 add a paragraph.
250.52 Grounding Electrodes.
(A) Electrodes Permitted for Grounding.
grounding as specified in (2) thmfflh L4) below shall be used.
REASON FOR CHANGE: Sometimes metal underground water pipe is not available for use as a grounding
electrode system. Therefore, to provide a more positive approach for grounding electrical premise systems
for safety, a method as specified in 250.52(Ax2), (3), and (4) shall be used. This will eliminate the need to
depend solely on a driven rod, plate, or pipe as specified in Section 250.52(A)(5) and (6).
**Section 300.11(A)(1) change to read as follows:
300.11 Securing and Supporting.
(A) Secured in Place.
(1) Fire -Rated Assemblies. Wiring located within the cavity of a fire -rated floor -ceiling or roof -
ceiling assembly shall not be secured to, or supported by, the ceiling assembly, including the
ceiling support wires-. unless tested as part of a fire -rated assembly. An independent means of
secure support ... (text unchanged)... are part of the fire -rated design.
(delete excepfron)
REASON FOR CHANGE: if luminaries were intended to be covered, it could have been conveyed in a
different manner than to introduce them in the exception. Based upon the International Building Code (IBC),
the recommendations by the Ceilings & Interior Systems Construction Association (CISCA) to separately
support luminaries is not mandated.
"Section 300.11(A)(2) change to react as follows:
300.11 Securing and Supporting.
(A) Secured in Place.
(2) Non -Firs -Rated Assemblies. Wiring located within the cavity of a non -fire -rated floor -ceiling or
roof -ceiling assembly shall not be secured to, or supported by, the oiling assembly, including the
ceiling support wires: unless authorized by. and installed in accordance with, the ceilina system
manufacturer's instructions. An independent means of secure support shall be provided.
(delete existing exception)
Add exception:
*NOTE: Underlining indicates new wads and phrases to be added to the 2002 National Electrical Code.
Sh:ikeeuts indicate existing words and phrases to be deleted.
North Central Texas 2 of 5 2/27/03
2002 NEC Amendments
REASON FOR CHANGE: Delete existing exception - Based upon the IBC, the recommendations by CISCA
to separately support luminaries is not mandated. Add exception - To allow for a reasonable manner In
which cables and conduits may be secured up off suspended ceilings of the removable panel type.
"Section 310.15(8)(6) change to read as follows:
310.15 Ampacifies for Conductors Rated 0-2000 Volts.
(B) Tables.
(6) 1201240 -Volt, 34Vire, Single -Phase Dwelling Services and Feeders. For dwelling units,
conductors, as listed in Table 310.15(6x6), shall be ... (text unchanged)... provided the requirements of
215.2, 220.22, and 230.42 are met. This Section shall not be used in contunction with 220.30.
REASON FOR CHANGE: To provide a more reasonable margin of safety for dwelling service and feeder
conductor allowable ampaaties.
*`Section 334.10 change to read as follows:
334.10. Uses Permitted. Type NM, Type NMC, and Type NMS cables shall be permitted to be used in the
following:
(1) One- and two-family dwellings.
Cables shall he ameealed withiR wells, AseFs, eF 0811IR98 that PFG -Ade a tham* WOW 99 FRSWFial that has
•: • I • An additional o il shall be permitted • I dwellinas where the entirestructure
protected throuahmd by an approved automatic sprinkler system.
Other structures lYl •' exceeding •height
REASON FOR CHANGE: Historically NM cable has been limited to a 3 -story or less wiring method since
1975. The allowance to increase the use of NM cable to buildings in the 3-6 story range in the 2002 NEC
has come about as a result of an appeal action by the Multi -National Housing Council to the NFPA
Standards Council and not as a result of the normal code revision action through NEC Code -Making
Panel 7, the NEC Technical Committee, and the positive vote of the NFPA membership at the NFPA
Annual Meeting. In that the NCTCOG Electrical Advisory Board believes that the current language in the
NEC Section 334.10 may again be revised in the 2005 NEC edition, due to the need for basic
consistency of regulations, and due to the fact that there is no evidence that the current installation
allowances for NM cable do not adequately serve the needs of the local electrical industry and citizens
alike, the NCTCOG Electrical Advisory Board believes the use of NM cable in the area served by the
NCTCOG would best be benefited by the installation rules as recommended over the past 3 NEC code
cycles.
'NOTE: Undedinina indicates new words and phrases to be added to the 2002 National Electrical Code.
Strikeouts indicate existing words and phrases to be deleted.
Nath Central Texas 3 of 5 2127/03
2002 NEC Amendments
"Section 334.12 add another use not permitted, (11):
334.12 Uses Not Permitted.
(A) Types NM, NMC, and NMS. Types NM, NMC, and NMS cables shall not be used as follows:
(1) As open runs ... (text unchanged)
(11) In non-residential metal frame structures.
REASON FOR CHANGE: Limiting the use of NM cable in non-residential metal frame construction is
suggested due to the inherent problems with soft jacketed wiring methods in buildings that utilized mainly
metal stud and other metal frame construction with sharp edges of unknown proportion. It is believed that
the potential safety issues against the use of allowing a soft jacketed wiring method in such construction
far outweighed any positive benefits.
*'Section 500.8(A)(1) change to read as follows:
588.8 Equipment
(A) Approval for Class and Properties.
(1) Equipment shall be identified ... (text unchanged)... the maximum surface temperatures specified in
503.1.
FPN: Luminaries (lighting fixtures) and other heat -producing apparatus ... (text
unchanged)...see Exception No. 3 to 500.8(8).
Suitability of WentMed equipment shall be dQ48FFRiRed by aRy ef-
REASON FOR CHANGE: "Identified" is already defined in Chapter 1
"Section 600.21(E) change to read as follows:
600.21 Ballasts, Transformers, and Electronic Parer Supplies.
(E) Attic and SoM Locations.
Ballasts, transformers, and electronic power supplies shall be permitted to be located in attics and soffits,
provided there is an access door at least 900 mm by 600 mm (3 ft by 2 it) and a passageway of at least 900
mm (3 it) high by 600 mm (21t) wide with a suitable permanent walkway at least dim) 600 mm 2
M wide extending from the point of entry to each component.
'NOTE: Underlinina indicates new words and phrases to be added to the 2002 National Electrical Code.
Strikeouts indicate existing words and phrases to be deleted.
Nath Central Texas 4 of 5 227/03
2002 NEC Amendments
REASON FOR CHANGE: To allow a more reasonable and safer width for the required walkway and to
make the requirement consistent with the International Mechanical Code (IMC).
REGIONAL INTERPRETATIONS
220.36. Optional Calculation — New Restaurants.
[This specification may apply to restaurants regarding new occupancy, new buildings, change of
occupancy in existing building, or upgrading existing buildings to new electrical load requirements.]
END
*NOTE: Vndedining indicates new words and phrases to be added to the 2002 National Electrical Code.
Strikeeuts indicate existing words and phrases to be deleted.
North Central Texas 5 of 5 2!27/03
2002 NEC Amendments