HomeMy WebLinkAboutOrdinance - 2013-O0056 - Amending Chapter 28 Of The Code Of Ordinances - 06/13/2013First Reading
May 23, 2013
Item No. 5.11
Second Reading
June 13, 2013
Item No. 5.9
ORDINANCE NO. 2013-00056
AN ORDINANCE AMENDING CHAPTER 28 OF THE CODE OF ORDINANCES OF THE
CITY OF LUBBOCK, TEXAS WITH REGARD TO ADOPTION OF THE 2011 NATIONAL
ELECTRICAL CODE (NFPA 70) AND PROVIDING FOR CERTAIN AMENDMENTS
THERETO TO MEET LOCAL CONDITIONS; PROVIDING A PENALTY; PROVIDING A
SAVINGS CLAUSE; PROVIDING FOR PUBLICATION; AND PROVIDING AN
EFFECTIVE DATE.
WHEREAS, it is the opinion of the City Council that the best interests of the citizens of the City
of Lubbock would be served by adopting the 2011 National Electrical Code (NFPA 70),
including certain amendments to meet local conditions; NOW THEREFORE:
BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF LUBBOCK:
SECTION 1. THAT Section 28.12.007 of the Code of Ordinances of the City of Lubbock is
hereby amended to read as follows:
Sec. 28.12.007 National Electrical Code —Adopted by reference
The publication entitled "National Electrical Code," 2011 edition (NFPA 70), published
by the National Fire Protection Association, a copy of which, authenticated by the
signature of the building official, shall be filed with the city secretary as a public record,
is hereby adopted as a part of this code as if fully copied herein in detail, except as
modified by the provisions of section 28.12.008 and division 6 of this article. In the event
of a conflict with any provision of the "National Electrical Code" and the Code of
Ordinances, the Code of Ordinances shall govern. References in this code to the
"National Electrical Code" or the "N.E.C." shall mean and refer to the 2011 edition.
SECTION 2. THAT Section 28.12.008 of the Code of Ordinances of the City of Lubbock is
hereby amended to read as follows:
Sec. 28.12.008 Same —Amendments
(a) Flash protection. Article 110.16 is hereby amended by deleting the entire article.
(b) Available fault current. Article 110.24 is hereby amended by deleting the entire
article.
(c) Article 210.8 Ground -Fault Protection for Personnel. Article 210.8 is hereby
amended to read as follows:
210.8 Ground -Fault Circuit -Interrupter Protection for Personnel.
1
(A) Dwelling. All 125-volt, single-phase, 15- and 20-ampere receptacles
installed in the locations specified in (1) through (8) shall have ground -fault
circuit -interrupter protection for personnel.
(1) (No change)
(2) Garages, and also accessory buildings that have a floor located at or
below grade level not intended as habitable rooms and limited to storage
areas, work areas, and areas of similar use
Exception: 15- and 20-ampere simplex receptacles within a garage that are
intended only to serve automatic garage door openers, irrigation system
controllers and freezers. Where a dedicated freezer space is not indicated
or apparent, the freezer exception shall not apply.
(3) - (8) (No change)
(d) Branch circuits required —Dwelling units. Article 210.11(C)(1) is hereby amended
to read as follows:
(C) Dwelling_ Units.
(1) Small -Appliance Branch Circuits. In addition to the number of branch
circuits required by other parts of this section, three or more 20-ampere
small -appliance branch circuits shall be provided for all receptacle outlets
specified by 210.52(B).
(e) Commercial offices ace receptacle outlets. Article 210 III. is hereby amended by
adding Article 210.51 to read as follows:
210.51 Commercial Office Space Receptacle Outlets. Office spaces classified as
Group "B"-Business by the Building Code shall be provided with a minimum of
four (4) duplex convenience receptacle outlets per office, and/or shall be provided
with a duplex convenience outlet for each twelve linear feet of usable wall space,
with no point along such wall further than 6 feet from an outlet. Floor outlets
further than two feet from a wall shall not be counted towards meeting this
requirement. In no case shall more than seven (7) duplex convenience outlets be
installed on one 20 amp circuit.
(f) Dwelling unit receptacle outlets -small appliances. Article 210.52 (B)(1)-(3) is
hereby amended to read as follows:
(B) Small Appliances.
(1) Receptacle Outlets Served. In the kitchen, pantry, breakfast room,
dining room, or similar area of a dwelling unit, the three or more 20-
ampere small -appliance branch circuits required by 210.11(C)(1) shall
serve all wall and floor receptacle outlets covered by 210.52(A), all
countertop outlets covered by 210.52(C), and receptacle outlets for
refrigeration equipment.
Exception No. 1: In addition to the required receptacles specified by
210.52, switched receptacles supplied from a general-purpose branch
circuit as defined in 210.70(A)(1), Exception No. 1, shall be permitted.
Exception No. 2: The receptacle outlet for refrigeration equipment shall be
permitted to be supplied from an individual branch circuit rated 15
amperes or greater.
(2) No Other Outlets. The three or more small -appliance branch circuits
specified in 210.52(B)(1) shall have no other outlets.
Exception No. 1: A receptacle installed solely for the electrical supply to
and support of an electric clock in any of the rooms specified in
210.52(B)(1).
Exception No. 2: Receptacles installed to provide power for supplemental
equipment and lighting on gas -fired ranges, ovens, or counter -mounted
cooking units.
(3) Kitchen Receptacle Requirements. Receptacles installed in a kitchen
to serve countertop surfaces shall be supplied by not fewer than three
small -appliance branch circuits, any or all of which shall also be permitted
to supply receptacle outlets in the same kitchen and in other rooms
specified in 210.52(B)(1). Additional small -appliance branch circuits shall
be permitted to supply receptacle outlets in the kitchen and other rooms
specified in 210.52(B)(1). No small -appliance branch circuit shall serve
more than one kitchen.
(g) Branch circuit load calculations. Article 220.10 is hereby amended to read as
follows:
220.10 General.
Branch -circuit loads shall be calculated as shown in 220.12, 220.14, and 220.16.
Additionally, in dwelling units, 20-amp lighting and receptacle loads, other than
the three required small appliance circuits specified in 210.11 (C)(1), shall be
equally divided on twenty (20)-amp branch circuits.
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(h) Lighting load for specified occupancies. Article 220.12 is hereby amended by
altering Table 220.12 to read as follows:
220.12 Lighting Load for Specified Occupancies.
A unit load of not less than that specified in Table 220.12 for occupancies
specified therein shall constitute the minimum lighting load. The floor area for
each floor shall be calculated from the outside dimensions of the building,
dwelling unit, or other area involved. For dwelling units, the calculated floor area
shall not include open porches, garages, or unused or unfinished spaces not
adaptable for future use.
Informational note: The unit values herein are based on minimum load conditions
and 100 percent power factor and may not provide sufficient capacity for the
installation contemplated.
Table 220.12 General Lighting Loads by Occupancy
Type of Occupancy Volt -Amperes per Volt -Amperes per
Square Meter Square Foot
Armories and auditoriums I I I
Banks
39b
3-112b
Barber shops and beauty parlors
33
3
Churches
11
1
Clubs
22
2
Court rooms
22
2
Dwelling units
4
Garages — commercial (storage)
6
112
Hospitals
22
2
Hotels and motels, including
22
`'
apartment houses without provision
for cooking by tenantsa
Industrial commercial (loft)
72
buildings
Lodge rooms
17
1-1 2
Office buildings
39b
3-1 2b
Restaurants
22
2
Type of Occupancy
Volt -Amperes per
Volt -Amperes per
Square Meter
Square Foot
Schools
33
Stores 33 3
Warehouses (storage) 3 1/4
In any of the preceding occupancies except one -family dwellings and individual dwelling units of
two-family and multifamily dwellings:
Assembly halls and auditoriums 11 1
Halls, corridors, closets, stairways 5 1/2
Storage spaces 3 1 /4
a See 220.14(J)
b See 220.14(K)
(i) Receptacle outlets. Article 220.14(I) is hereby amended to read as follows:
5
(I) Receptacle Outlets. Except as covered in 220.14(J) and (K), receptacle outlets
shall be calculated at not less than 180 volt-amperes for each single or for each
multiple receptacle on one yoke. A single piece of equipment consisting of a
multiple receptacle comprised of four or more receptacles shall be calculated at
not less than 90 volt-amperes per receptacle. This provision shall not be
applicable to the receptacle outlets specified in 210.11(C)(1) and (C)(2). In no
case shall more than seven (7) duplex receptacles be installed on a single 20-amp
circuit in commercial occupancies.
0) Raceway. Article 225.27 is hereby amended by deleting the entire article.
(k) Non-residential buildings with multiple services served by underground service
laterals. Article 230.2 is hereby amended by adding a new subsection (F), as
follows:
(F) Non-residential buildings with multiple services served by underground
service laterals. For every non-residential building where multiple services are
authorized and are supplied by underground service laterals, there shall be a
designated metering/service location at the rear of such building on the exterior
wall. There shall be no point along this wall more than seventy-five (75) linear
feet from a metering/service location. No utility service point shall be closer than
one hundred fifty (150) feet from another utility service point unless otherwise
approved. The arrangement and installation of the conductors and equipment shall
be as provided for in Figure 230.96 and Article 230.96.
(1) Point of attachment. Article 230.26 is hereby amended to read as follows:
230.26 Point of Attachment.
(A) The point of attachment of the service -drop conductors to a building or other
structure shall provide the minimum clearances as specified in 230.9 and 230.24.
In no case shall this point of attachment be less than 3.0 m (10 ft) above finished
grade.
(B) The point of attachment of overhead service drops on a residence or building
shall be on the rear of the building (alley side), or at a point agreed upon by the
inspector and the serving utility.
(m) Service masts as supports. Article 230.28 is hereby amended to read as follows:
230.28 Service Masts as Supports.
Where a service mast is used for the support of service -drop conductors, it shall
be of adequate strength or be supported by braces or guys to withstand safely the
strain imposed by the service drop. Where raceway -type service masts are used,
masts shall consist of rigid metallic conduit (RMC) or intermediate metallic
conduit (IMC) not less than two (2)-inch trade size, and all raceway fittings shall
be identified for use with service masts. Only power service -drop conductors shall
be permitted to be attached to a service mast. The point of attachment of the
service cable shall be twenty-four (24) inches above the roof.
(n) Non-residential buildings with multiple services served by underground service
laterals. Article 230.40, Exception No. 1, is hereby amended to read as follows:
Exception No. 1: A building with more than one occupancy shall be permitted to
have one set of service -entrance conductors for each service, as defined in 230.2,
run to each occupancy or group of occupancies. For non-residential buildings
containing multiple occupancies served by underground service laterals in
accordance with Article 230.2(F), installation shall be in accordance with Figure
230.96 and Article 230.96.
(o) Service equipment —General. Article 230V is hereby amended by adding a new
section 230.67 to read as follows:
230.67 Meter Installation.
(A) Each meter socket installation shall be on the outside of the building[,]
residence or other structure and shall be mounted not more than six (6) feet nor
less than five (5) feet above the level of the standing space measured to the center
of the meter face, except when the device or area for mounting the meter base is
provided by the serving utility.
(B) Multi -meter bases of two (2) or more meters at any one location shall have a
permanent identification tag (brass, copper or aluminum). Such tag shall be not
less than one inch long, one-half inch wide or one inch in diameter. Each tag shall
properly identify the unit served by the meter base and be clearly visible. It shall
be securely fastened to the meter base, but not the meter base lid. Tags shall be
stamped with steel numerical and/or alphabetical figures of at least one -eighth of
an inch.
Exception: If visible from the front, non -movable parts of meter base may be
stamped for identification.
(p) Non-residential buildings with multiple services served by underground service
laterals. Article 230 is hereby amended by adding a new article 230.96 to read as
follows:
Article 230.96. Non-residential buildings with multiple services served b
underground service laterals.
Non-residential buildings with multiple services served by underground service
laterals shall have all services configured in accordance with 230.96 (1) through
(7) and Figure 230.96 below, unless otherwise approved.
(1) Sizing of gutter, wire -way or wire trough. The contractor shall provide a
gutter, wire -way or wire -trough with a minimum size of eight (8) inch by eight (8)
inch by six (6) feet or the National Electrical Code requirement, whichever is
greater, to contain the service conductors to supply the meter bases and service
disconnects at each metering location.
(2) Service disconnecting means. Each space requiring its own meter shall have
its service disconnect and disconnects located at the metering location and there
shall be no more than six (6) service disconnecting means at any metering
location without the written consent of the building official.
(3) Conductors and raceways. The contractor shall provide service conductors
and raceways from the gutter, wire -way or wire -trough to the point of connection
of the serving utility. There shall be one additional four -inch conduit provided
from each wire -trough to the point of connection of the serving utility or a
terminal junction box adjacent to the metering location. The contractor shall
provide an acceptable means for at least six (6) meter taps from the service feed
brought to each wire -trough. To insure a proper conductor termination, the service
feed conductors from the point of connection of the serving utility to the wire -
trough shall be copper. They shall be installed in approved conduit, shall enter the
wire -trough from the bottom side toward one end, shall traverse the entire length
of the wire -way and shall be terminated on an approved termination lug or block
as set forth above.
(4) Sizing of service entrance conductors and equipment. If the actual load of the
building is not known, an assumed load of twenty (20) volt-amperes per square
foot shall be used to size the service conductors.
(5) Phase -matching and balancing of load. All service taps which connect to the
building service shall match the phasing of the building service. Service taps
connecting to a 3-phase 4-wire building service shall be 3-phase and 4-wire taps.
Service taps shall be load balanced before a final inspection is granted and the
system shall be balanced back to the building service.
(6) Method of grounding services. Multi -meter services shall be grounded at the
service connection point in the wire way and all service taps shall be grounded to
that point. The grounding conductor shall be sized according to the requirements
of Article 250 for the service size. Refer to Figure 230.96:
FIGURE 230.96
(q)
(r)
(s)
(t)
(u)
O SC r I OISC V 1 015C
NIMIN
wax.
MGT
t
iUT" eOx2IL
TO 3CqVO4
Cd YGTIOVE
UT ILIT•
61 `1
MAIN [I i MAIN I I MAIN
OISC DISC 1}� DISC
M,M,N
ALL WEATNER•PROOF
CONNECTIONS
T NIMA M
8 NI x 8" GUTTER
J. MW OR AS PER
NEC.
fGROUNG,NG METNOO
►ER N E C a50 a a"
Marking. Article 250.21(C) is hereby amended by deletion of the entire article.
Grounding electrode system. Article 250.50 is hereby amended to read as follows:
250.50 Grounding Electrode System.
All grounding electrodes as described in 250.52(A)(1) through (A)(7) that are
present at each building or structure served shall be bonded together to form the
grounding electrode system. Where none of these grounding electrodes exist, one
or more of the grounding electrodes specified in 250.52 (A)(4) through (A)(8)
shall be installed and used. In new construction, or in any building reconstruction
or addition involving the new construction of a concrete foundation containing
reinforcing steel that complies with the requirements of Article 250.52(A)(3), a
concrete encased electrode shall be provided as part of the grounding electrode
system. Where a concrete encased electrode or metallic water piping is used, a
supplemental electrode complying with 250.52 (A)(5) shall be provided.
Exception: Concrete -encased electrodes of existing buildings or structures shall
not be required to be part of the grounding electrode system where the steel
reinforcing bars or rods are not accessible for use without disturbing the concrete.
Bonding for others stems. Article 250.94 shall is hereby amended by deleting the
entire article.
Cables and raceways parallel to framing members and furring stri s. Article 300.4
(D) is hereby amended by deleting the entire subsection.
UndergEound installations direct buried conductors and cables). Article 300.5(A)
and Table 300.5 are hereby amended to read as follows:
300.5 Underground Installations.
9
(A) Minimum Cover Requirements. Direct -buried cable or conduit or other
raceways shall be installed to meet the minimum cover requirements of Table
300.5.
Table 300.5 Minimum Cover Requirements, 0 to 600 Volts, Nominal, burial in Millimeters (Inches)
Type of Wiring Method or Circuit
Column 1
Column 2
Column 3
Column 4
Column 5
Direct Burial
Rigid Metal
Nonmetallic
Residential Branch
Circuits for Control
Cables or
Conduit or
Raceways Listed
Circuits Rated 120
of Irrigation and
Conductors 6
Intermediate Metal
for Direct Burial
Volts or Less with
Landscape Lighting
Conduit
Without
GFCI Protection
Limited to Not More
Concrete
and Maximum
Than 30 Volts and
Encasement or
Overcurrent
Installed with Type
Other Approved
Protection of 20
OF or in Other
Raceways
Amperes
Identified Cable or
Raceway
Location of Wiring
mm
in.
mm
in.
mm
in.
mm
in
mm
in.
Method or Circuit
All locations not specified
600
24
15u
6
450
18
300
12
150
6
below
In trench below 50-mm (2-
450
18
6
300
12
150
h
1,u
6
in )thick concrete or
equivalent
Under a building
0
U
U
0
0
0
0
0
0
0
(in raceway only)
(in raceway only)
(in raceway only)
Column 1
Column 2
Column 3
Column 4
Column 5
Direct Burial
Rigid Metal
Nonmetallic
Residential Branch
Circuits for Control
Cables or
Conduit or
Raceways Listed
Circuits Rated 120
of Irrigation and
Conductors 6
Intermediate Metal
for Direct Burial
Volts or Less with
Landscape Lighting
Conduit
Without
GFCI Protection
Limited to Not More
Concrete
and Maximum
Than 30 Volts and
Encasement or
Overcurrent
Installed with Type
Other Approved
Protection of20
OF or in Other
Raceways
Amperes
Identified Cable or
Raceway
Under minimum of 102-
ti;
] 8
] ()1;
4
100
4
I50
6
I50
6
mm (4-in.) thick concrete
exterior slab with no
vehicular traffic and the
slab extending not less
than 152 mm (6 in.)
beyond the underground
installation
(direct burial)
(direct burial)
100
4
100
4
10
(in raceway only)
(in raceway only)
Under streets, highways,
600
24
600
24
600
24
600
24
600
24
roads, alleys, driveways,
and parking lots
One- and two-family
450
18
450
18
450
18
100
12
450
18
dwelling driveways and
outdoor parking areas, and
used only for dwelling -
related purposes
In or under airport
450
18
450
18
450
18
451,
18
450
18
runways, including
adjacent areas where
trespassing prohibited
Notes:
1. Cover is defined as the shortest distance in millimeters (inches) measured between a point on
the top surface of any direct -buried conductor, cable, conduit, or other raceway and the top surface
of finished grade, concrete, or similar cover.
2. Raceways approved for burial only where concrete encased shall require concrete envelope not
less than 50 mm (2 in.) thick.
3. Lesser depths shall be permitted where cables and conductors rise for terminations or splices or
where access is otherwise required.
4. Where one of the wiring method types listed in Columns 1-3 is used for one of the circuit types
in Columns 4 and 5, the shallowest depth of burial shall be permitted.
5. Where solid rock prevents compliance with the cover depths specified in this table, the wiring
shall be installed in metal or nonmetallic raceway permitted for direct burial. The raceway shall be
covered by a minimum of 50 mm (2 in.) of concrete extending down to rock.
6. Service and feeder conductors shall be installed in approved raceways protected in accordance
with Column 2 or 3, as applicable.
(v) Minimum size of conductors. Article 310.106(A) is hereby amended to read as
follows:
310.106(A) Minimum Size of Conductors.
The minimum size of conductors shall be as shown in Table 310.106(A), except
that no conductor smaller than No. 12 American wire gauge size (12 AWG) shall
be used in work governed by this code.
Exceptions:
(1) Pendant and portable cords;
(2) Fixture wire;
11
(3) No. 14 AWG may be used for individual fixture leads at an outlet
box;
(4) No. 14 AWG may be used for control circuits operating contactors
or relays of a size approved by the manufacturer and the building
inspection department;
(5) Wiring for systems covered under Article 700 (Emergency
Systems);
(6) Wiring for systems covered under Article 600 (Electrical Signs);
(7) No. 14 AWG may be used for the wiring of switch legs in
residential occupancies. where provided with appropriate over
current device.
(8) Notwithstanding exceptions (1)-(7) above. where permitted
elsewhere in this code.
(w) Conductor material. Article 310.106(B) is hereby amended to read as follows:
(B) Conductor Material. Conductors in this article shall be of aluminum, copper -
clad aluminum, or copper unless otherwise specified.
Exceptions:
(1) Conductors made of aluminum or of an AA-8000 Series aluminum
alloy complying with Article 310.4 may be installed on services and
feeders only. Aluminum conductors must be terminated properly using
approved compression -type crimp lugs installed with a proper tool and
with an approved oxide inhibitor. Such conductors may also be used as
branch circuit wiring in commercial and industrial applications in No. 4
AWG or larger wire sizes, subject to the further conditions outlined
herein.
(2) No aluminum conductors shall be installed on any branch circuits or
grounding systems.
(x) Uses not permitted (types NM and NMS). Article 334.12(B) shall be amended to
read as follows:
(B) Types NM and NMS. Types NM and NMS cables shall not be used under the
following conditions or in the following locations:
(1) Where exposed to corrosive fumes or vapors
12
(2) Where embedded in masonry, concrete, adobe, fill, or plaster
(3) In a shallow chase in masonry, concrete, or adobe and covered with
plaster, adobe, or similar finish
(4) Where exposed or subject to excessive moisture or dampness.
(y) Nonmetallic sheathed cable (Romex)—Uses not permitted. Article 334.12 shall be
amended by adding a new subsection (C) to read as follows:
(C) Nonmetallic sheathed cable shall not be used in any type of commercial
building nor shall it be used in residential buildings used as or converted into any
commercial use nor in any building used as, or converted into, convalescent
homes, nurseries or day-care facilities requiring a license from the State of Texas.
For purposes of this Article, a "commercial building" shall include all buildings
not classified as Group "R"- Residential by the Building Code.
(z) Ampacity. Article 334.80 shall be amended by deleting the second and third
paragraphs.
(aa) Wet locations (receptacles in). Article 406.9(B)(1) shall be amended to read as
follows:
15- and 20-ampere. 125- and 250-volt receptacles in a Wet location. 15- and 20-
ampere, 125- and 250-volt receptacles installed outdoors in a wet location shall
have an enclosure that is weatherproof whether or not the attachment plug cap is
inserted. All 15- and 20- ampere, 125- and 250 volt non -locking receptacles shall
be listed weather -resistant type.
Exception: 15- and 20-ampere, 125- through 250-volt receptacles installed in the
following wet locations shall be permitted to have an enclosure that is
weatherproof only when the attachment plug is removed:
a. Those subject to routine high pressure spray washing;
b. Those customarily designed and located for intermittent, short-term use
during periods where rainfall or other detrimental moisture is not present.
(bb) Ungrounded systems. Article 408.3(F)(2) is hereby amended by deletion of the
entire article.
(cc) Field identification required. Article 408.4(B) is hereby amended by deletion of
the entire article.
13
(dd) Panel board over current device capacity. Article 408 III. is hereby amended by
adding article 408.35 to read as follows:
408.35. Panel board S are Circuit Ca acit .
Panel boards serving dwelling units shall be provided with capacity for two
additional 120-volt branch circuits, and shall be provided with a spare conduit of
not less than 3/4" trade size installed from the panel to an accessible crawl space
in the attic, under the floor, or to the outside of the house where there is no
accessible attic or crawl space.
(ee) Luminaries in specific locations. Article 410.10 is hereby amended by adding a
new sub article (F), to read as follows:
(F) Flood Lights and other Luminaries on or near the Ground. Open flood lights
or other fixtures containing luminaries installed on the ground or within eight (8)
feet of finished grade shall be equipped with a guard or protective device to
prevent personal injury from burns or electric shock.
SECTION 3. THAT violation of any provision of this Ordinance shall be deemed a misdemeanor
;punishable as provided by Section 1.01.004 of the Code of Ordinances of the City of Lubbock, Texas.
SECTION 4. THAT should any paragraph, sentence, clause, phrase or word of this Ordinance be declared
unconstitutional or invalid for any reason, the remainder of this Ordinance shall not be affected thereby.
SECTION 5. THAT pursuant to Section 214.218 of the Texas Local Government Code, this Ordinance
shall not be implemented or enforced until after the 30"' day after the date of final adoption.
ECTION 6. THAT the City Secretary is hereby authorized to cause publication of the descriptive
iption of this Ordinance as an alternative method provided by law.
14
AND IT IS SO ORDERED.
Passed by the City Council on first reading this 2_3rdiay of .--May , 2013.
Passed by the City Council on second reading this 13±hday of _Tune_, 2013.
RO TSON,•'
TTEST:
Garza, City Secretary
APPROVED AS TO CONTENT:
O'Neal, Chief Building Official
APPROVED AS TO FORM:
ims4ssis an i Attorney
as12011 NEC ord.2.22.13
15