ORDINANCE NO. BL2000-343

An ordinance amending chapter 16 of the Metropolitan Code of Laws by adopting the latest edition of the National Electrical Code, with amendments thereto.

BE IT ENACTED BY THE COUNCIL OF THE METROPOLITAN GOVERNMENT OF NASHVILLE DAVIDSON COUNTY:

Section 1. Section 16.20.140(A) of the Metropolitan Code of Laws is amended by deleting Section 16.20.140(A) and substituting the following: "A. The 1999 Edition of the National Electrical Code and Article 90 through Chapter 9 inclusive, and Appendices A, B, C and D inclusive are adopted and incorporated into this chapter as the technical section of the electrical code of the Metropolitan Government, by reference, as fully as though copied into this chapter. "

Section 2. Section 16.20.150 of the Metropolitan Code of Laws is amended by deleting Section 16.20.150 and substituting the following:

"16.20.150 Amendments to the National Electrical Code.

A. Section 100(A) of the 1999 Edition of the National Electrical Code is amended by adding the following new definition:

Authority Having Jurisdiction. The Director of the Metropolitan Department of Codes Administration.

B. Section 110-26(f)(1)(a) of the 1999 Edition of the National Electrical Code is amended by deleting Section 110-26(f)(1)(a) and substituting the following:

(a) Dedicated Electrical Space. The space equal to the width and depth of the equipment and extending from the floor to a height of 6ft (1.83m) above the equipment or to the structural ceiling, whichever is lower, shall be dedicated to the electrical installation. No piping, ducts or equipment foreign to the electrical installation shall be located in this zone. No equipment within the scope of Article 384 and motor control centers, may be installed in any bathroom or within six (6) feet of any sink, basin or lavatory.

Exception: Equipment that is isolated from the foreign equipment by height or physical enclosures or covers that will afford adequate mechanical protection from vehicular traffic or accidental contact by unauthorized personnel or that complies with (b), shall be permitted in areas that do not have the dedicated space described in this rule.

C. Section 210-8(b) of the 1999 Edition of the National Electrical Code is amended by deleting Section 210-8(b) and substituting the following:

(b) Other than Dwelling Units. All 125-volt, single-phase, 15- and 20- ampere receptacles installed in the locations specified below shall have ground-fault circuit-interrupter protection for personnel.

(1) Bathrooms
(2) Rooftops
(3) Within 6 feet (6’) of a sink, basin or lavator

D. Section 210-19(a) of the 1999 Edition of the National Electrical Code is amended by deleting Section 210-19(a) and substituting the following:

(a) General. Branch-circuit conductors shall have an ampacity not less than the maximum load to be served. Where a Branch circuit supplies continuous loads or any combination of continuous and non continuous loads, the minimum branch-circuit conductor size, before the application of any adjustment or correction factors, shall have an allowable ampacity equal to or greater than the non continuous load plus 125 percent of the continuous load. Aluminum and copper-clad aluminum conductors shall not be used on any branch circuit wiring.

Exception: Where the assembly, including the overcurrent devices protecting the branch circuit(s), is listed for operation at 100 percent of its rating, the ampacity of the branch circuit conductors shall be permitted to be not less than the sum of the continuous load plus the non continuous load.

E. Section 210-52(a)(2)(a) of the 1999 Edition of the National Electrical Code is amended by deleting Section 210-52(a)(2)(a) and substituting the following:

(a) Any space 2ft (610 mm) or more in width (including space measured around corners) and unbroken along the floor line by doorways, fireplaces, and similar openings.

Exception: When a side swinging bedroom door opens 90 degrees and within 6" of a wall parallel to the 90 degree open door, the wall space behind the door may be increased to 4 feet when measured along the floor line from the hinge side of the door.

F. Section 210-52(b)(1) of the 1999 Edition of the National Electrical Code is amended by deleting Section 210-52(b)(1) and substituting the following:

(1) In the kitchen, pantry, breakfast room, dining room, or similar area of a dwelling unit, the two or more 20-ampere small appliance branch circuits required by Section 210-11(c)(1) shall serve all receptacles outlets covered by Sections 210-52(a) and (c) and receptacles outlets for refrigeration equipment. There shall not be more than two (2) receptacles installed on each small appliance branch circuit.

Exception No 1: In addition to the required receptacles specified by Section 210-52, switched receptacles supplied from a general-purpose branch circuit as defined min Section 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.

G. Section 210-52(e) of the 1999 Edition of the National Electrical Code is amended by deleting Section 210-52(e) and substituting the following:

(e) Outdoor Outlets. Outdoor receptacles shall be installed in accordance with (1) through (3).

(1) One Family Dwelling. For a one-family dwelling (including townhouses) and each unit of a two-family dwelling that is at grade level, at least one receptacle outlet accessible at grade level and not more than 6 ft (1.98) above grade shall be installed. at the front and back of each dwelling unit. See Article 210-8(a)(3).

(2) Condominiums and Apartments. For condominiums and apartment units that is at grade level, at least one receptacle outlet accessible at grade level and not more than 6 ft (1.98) above grade shall be installed. at the front or back of each dwelling unit. See Article 210-8(a)(3).

(3) Patios, Balconies, or Decks. For one and two family dwellings, condominiums and apartment units with patios, balconies or decks, an outdoor receptacle outlet shall be installed adjacent to the door opening on to the patio, balcony or deck.

H. Section 210-52(g) of the 1999 Edition of the National Electrical Code is amended by deleting Section 210-52(g) and substituting the following:

(g) Basements and Garages. For a one and two family dwelling (including townhouses), condominium and apartment units at least one receptacle outlet, in addition to any provided for laundry equipment, shall be installed in each basement, each attached garage and in each detached garage with electric power. See Articles 210-8(a)(2) and (a)(5). Where a portion of the basement is finished into a habitable room(s), the receptacle outlet required by this section shall be installed in the unfinished portion.

I. Section 210-52 of the 1999 Edition of the National Electrical Code is amended by adding the following new Section 210-52(i):

(i) Smoke Detectors.

(1) Dwelling Units and Sleeping Rooms. Approved single-station or multiple-station smoke detectors shall be installed in accordance with NFPA 72, Chapter 2, within every dwelling and every dwelling unit within an apartment house, condominium or townhouse, and every guest or sleeping room in a motel, hotel, dormitory, and sleeping rooms in residential care/assisted living occupancies. Where more than one detector is required to be installed within an individual dwelling unit, the detectors shall be wired in such a manner that the actuation of one alarm will actuate all of the alarms in the individual unit.

(2) Locations Within Structures. In dwellings, dwelling units, dormitories, and sleeping rooms in residential care/assisted living occupancies smoke detectors shall be installed in each sleeping room, outside of each separate sleeping area in the immediate vicinity of the bedrooms and on each additional story of the dwelling, including basements, cellars and attached garages but not including crawl spaces and uninhabitable attics.

(3) Additional Split-Level Requirements. Within every dwelling and every dwelling unit within an apartment house, condominium or townhouse, and every guest or sleeping room in a motel, hotel, dormitory, and sleeping rooms in residential care/assisted living occupancies, with split levels, a smoke detector needs to be installed only on the upper level, provided the lower level is less than one full story below the upper level, except that if there is a door between levels, then a detector is required on each level. All detectors shall be interconnected such that actuation of one alarm will actuate all the alarms in the individual unit and shall provide an alarm which will be audible in all sleeping areas.

(4) Alteration, repairs and additions. When interior alterations, repairs or additions requiring a permit occur, or when one or more sleeping rooms are added or created in existing dwellings or dwelling units, the entire dwelling unit shall be provided with smoke detectors located as required for new dwellings; the smoke detectors shall be interconnected and hard wired.

Exception: Detectors shall not be required to be interconnected and hard wired when the alterations, repairs or additions do not result in the exposure of electrical wiring by the removal of interior wall and ceiling finishes.

J. Section 230-70(a) of the 1999 Edition of the National Electrical Code is amended by deleting Section 230-70(a) and substituting the following:

(a) Location. The service disconnecting means shall be installed at a readily accessible location either outside of a building or structure, or inside. The main service disconnecting means shall not be located more than five (5) feet from the point where the service conductors enter a building or other structure. Service disconnecting means shall not be installed in bathrooms.

K. Section 300-4(a) of the 1999 Edition of the National Electrical Code is amended by deleting Section 300-4(a) and substituting the following:

(a) Cables and Raceways Through Wood Members.

(1) Bored Holes.

(a) Joist and rafters. In both exposed and concealed locations, where a cable or raceway-type wiring method is installed through bored holes in joists and rafters, holes shall be bored so that the edge of the hole is not less than two (2) inches from the top or bottom of the joist or rafter and the diameter of any such hole shall not exceed one-third (1/3 ) of the actual depth of the joist or rafter.

(b) Studs. A hole not greater in diameter than forty (40) percent of the stud actual width may be bored in any wood stud. Bored holes not greater than sixty (60) percent of the actual width of the stud are permitted in nonbearing partitions or in any wall where each bored stud is doubled provided no more than two such successive double studs are bored. In no case shall the edge of the bored hole be nearer than five eighths (5/8) inch to the edge of the stud. Bored holes shall not be located at the same section of stud as a cut or notch.

(c) Protection. Holes bored less than 1 in. (31.8 mm) from the nearest edge of the wood member, the cable or raceway shall be protected from penetration by screws or nails by a steel plate or bushing, at least 1/16 in. (1.59 mm) thick, and appropriate length and width installed to cover the area of the wiring.

Exception: Steel plates shall not be required to protect rigid metal conduit, intermediate metal conduit, rigid nonmetallic conduit, or electrical metallic tubing.

(2) Notches in wood.

(a) Joist and rafters. In both exposed and concealed locations, where cables or raceways are to be laid in notches in wood joist and rafters, notches on the ends of joists shall not exceed one-fourth (1/4) the actual depth of the joist. Notches for cables or raceways in the top or bottom of joists shall not exceed one-sixth (1/6) of the actual depth and shall not be located in the middle one-third (1/3) of the span.

(b) Studs. In exterior walls and bearing partitions, any wood stud may be cut or notched to a depth not exceeding twenty-five (25) percent of its actual width. Stud in nonbearing partitions may be notched to a depth not greater than forty (40) percent of the actual width of the stud is permitted in partitions supporting no loads other than the weight of the partition.

(c) Protection. In both exposed and concealed locations, cable or raceways shall be permitted to be laid in notches in wood studs, joist, rafters or other wood members where the cable or raceway at those points is protected against nails or screws by a steel plate or bushing, at least 1/16 in. (1.59 mm) thick installed before the building finish is applied.

Exception: Steel plates shall not be required to protect rigid metal conduit, intermediate metal conduit, rigid nonmetallic conduit, or electrical metallic tubing.

L. Section 300-21 of the 1999 Edition of the National Electrical Code is amended by deleting Section 300-21 and substituting the following:

300-21 Penetrations of Fire Rated Assemblies.

(a) Through Voids. Electrical installation in hollow spaces, vertical shafts, and ventilation or air-handling ducts shall be made so that the possible spread of fire or products of combustion will not be substantially increased.

(b) Through Materials. Electrical penetration through fire-resistance-rated walls, partitions, floors or ceiling shall be protected by approved methods to maintain the fire-resistance rating of the element penetrated.

(c) Openings for Outlet Boxes. Openings in fire-resistance-rated walls or floor/ceiling assemblies for metallic electrical outlet boxes not exceeding 16 square inches are permitted provided the area of such openings does not aggregate more than 100 square inches for any 100 square feet of fire resistant wall area or floor/ceiling area or shaft enclosure wall area. Outlet boxes on opposite sides of a fire resistance-rated wall or shaft enclosure shall be separated by a horizontal distance of not less than 24 inches (610 mm).

Exception: Openings for electrical outlet boxes of any material are permitted provided such boxes are listed for use in fire resistant assemblies and are installed in accordance with their listing.

(d) Apparatus Exceeding 16 Square Inches. When walls, floors, ceilings and partitions are required to have a minimum 1-hour or greater fire resistance rating, service equipment, panels, panel boards, cabinets, switchboards and lighting fixtures that exceeds 16 square inches shall be so installed such that the required fire resistance will not be reduced.

Exception: Fixtures which are listed for such installation are permitted.

M. Section 336-4 of the 1999 Edition of the National Electrical Code is amended by deleting Section 336-4 and substituting the following:

336-4. 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
(2) Multifamily dwellings, except as prohibited in Article 336-5 and any social building or laundry room or building and other buildings of an apartment or condominium complex. Buildings with assembly rooms that have an occupant load of greater than 100 persons shall be considered a commercial building
(3) Cable trays, where the cables are identified for the use

N. Section 336-5(a)(1) of the 1999 Edition of the National Electrical Code is amended by deleting Section 336-5(a)(1) and substituting the following:

[1) Any commercial or industrial building or any multifamily dwelling or other structure exceeding three floors

For the purpose of this article, one additional level that is the first level and not designed for human habitation and used only for vehicle parking, storage, or similar use shall be permitted.

O. Section 422-16 of the 1999 Edition of the National Electrical Code is amended by adding the following new Section 422-16(b)(4):

(4) Kitchen waste disposers, built in dishwashers, trash compactors, wall-mounted ovens, and counter-mounted cooking unit appliances, receptacles shall be on a separate branch circuit."

Section 3. Section 16.20.154 of the Metropolitan Code of Laws is amended by deleting Section 16.20.154 and substituting the following:

"16.20.154 Amendments to the CABO One and Two Family Dwelling Code.

A. Section 3902.1 of the 1995 Edition of the CABO One and Two Family Dwelling Code is amended by deleting Section 3902.1 and substituting the following:

3902.1 Notching and Drilling.

3902.1.1 Notching joists and rafters. Notches on the ends of joists shall not exceed one-fourth () the actual depth. Notches for pipes in the top or bottom of joists shall not exceed one-sixth (1/6) of the actual depth and shall not be located in the middle one-third (1/3) of the span.

3902.1.2 Notching studs. In the exterior walls and bearing partitions, any wood stud may be cut or notched to a depth not exceeding twenty-five percent (25%) of its actual width. Cutting or notching of studs to a depth not greater than forty percent (40%) of the actual width of the stud is permitted in nonbearing partitions supporting no loads other than the weight of the partition.

3902.1.3 Protection at notches. The cable or raceway at those points is protected against nails or screws by a steel plate or bushing, at least 1/16 in. (1.59 mm) thick installed before the building finish is applied.

Exception: Steel plates shall not be required to protect rigid metal conduit, intermediate metal conduit, rigid nonmetallic conduit, or electrical metallic tubing.

3902.1.4 Drilling joists and rafters. Holes bored for pipes or cable shall not be within two (2) inches of the top or bottom of the joist and the diameter of any such hole shall not exceed one-third (1/3) of the actual depth of the joist.

3902.1.5 Drilling studs. A hole not greater in diameter than forty percent (40%) of the stud’s actual width may be bored in any wood stud. Bored holes not greater than sixty percent (60%) of the actual width of the stud are permitted in nonbearing partitions or in any wall where each bored stud is doubled provided no more than two such successive double studs are bored. In no case shall the edge of the bored hole be nearer than five-eighths inch (5/8) to the edge of the stud. Bored holes shall not be located at the same section of stud as a cut or notch.

3902.1.6 Protection at holes. Holes bored less than 1 in. (31.8 mm) from the nearest edge of the wood member, the cable or raceway shall be protected from penetration by screws or nails by a steel plate or bushing, at least 1/16 in. (1.59 mm) thick, and appropriate length and width installed to cover the area of the wiring.

Exception: Steel plates shall not be required to protect rigid metal conduit, intermediate metal conduit, rigid nonmetallic conduit, or electrical metallic tubing.

B. Section 3902.2 of the 1995 Edition of the CABO One and Two Family Dwelling Code is amended by deleting Section 3902.2 and substituting the following:

3902.2 Penetrations of fire-resistance-rated assemblies.

3902.2.1 Through voids. Electrical installation in hollow spaces, vertical shafts, and ventilation or air-handling ducts shall be made so that the possible spread of fire or products of combustion will not be substantially increased.

3902.2.2 Through materials. Electrical penetration through fire-resistance-rated walls, partitions, floors or ceiling shall be protected by approved methods to maintain the fire-resistance rating of the element penetrated.

3902.2.3 Openings for outlet boxes. Openings in fire-resistance-rated walls or floor/ceiling assemblies for metallic electrical outlet boxes not exceeding 16 square inches are permitted provided the area of such openings does not aggregate more than 100 square inches for any 100 square feet of fire resistant wall area or floor/ceiling area or shaft enclosure wall area.

Exception: Openings for electrical outlet boxes of any material are permitted provided such boxes are listed for use in fire resistant assemblies and are installed in accordance with their listing.

3902.2.4 Outlet box separation. Outlet boxes on opposite sides of a fire-resistance-rated wall or shaft enclosure shall be separated by a horizontal distance of not less than 24 inches (610 mm).

3902.2.5 Apparatus exceeding 16 square inches. When walls, floors, ceilings and partitions are required to have a minimum 1 hour or greater fire resistance rating, service equipment, panels, panel boards, cabinets, switchboards and lighting fixtures that exceeds 16 square inches shall be so installed such that the required fire resistance will not be reduced.

Exception: Fixtures which are listed for such installation are permitted.

C. Section 3902 of the 1995 Edition of the CABO One and Two Family Dwelling Code is amended by adding the following new Section 3902.4:

3902.4 Smoke Detectors.

3902.4.1 Residential units general. Approved single-station or multiple-station smoke detectors shall be installed in accordance with NFPA 72, Chapter 2, within one and two family dwelling, and townhouses. Where more than one detector is required to be installed within an individual dwelling unit, the detectors shall be wired in such a manner that the actuation of one alarm will actuate all of the alarms in the individual unit.

3902.4.2 Dwelling unit locations. In dwelling units, smoke detectors shall be installed in each sleeping room, outside of each separate sleeping area in the immediate vicinity of the bedrooms and on each additional story of the dwelling, including basements, cellars and attached garages but not including crawl spaces and uninhabitable attics.

3902.4.3 Additional dwelling unit split-level locations. In dwelling units with split levels, a smoke detector need be installed only on the upper level, provided the lower level is less than one full story below the upper level, except that if there is a door between levels, then a detector is required on each level. All detectors shall be interconnected such that actuation of one alarm will actuate all the alarms in the individual unit and shall provide an alarm which will be audible in all sleeping areas.

3902.4.4 Alteration, repairs and additions. When interior alterations, repairs or additions requiring a permit occur, or when one or more sleeping rooms are added or created in existing dwellings or dwelling units, the entire dwelling unit shall be provided with smoke detectors located as required for new dwellings; the smoke detectors shall be interconnected and hard wired.

Exception: Detectors shall not be required to be interconnected and hard wired when the alterations, repairs or additions do not result in the exposure of electrical wiring by the removal of interior wall and ceiling finishes."

D. Section 3905.4 of the 1995 Edition of the CABO One and Two Family Dwelling Code is amended by deleting Section 3905.4 and substituting the following:

3905.4 Location of clear spaces. Required working space shall not be designated for storage. Panel boards and overcurrent protection devices shall not be located in clothes closets, bathrooms, or within six (6) feet of any sink or lavatory.

E. Section 3905.7 of the 1995 Edition of the CABO One and Two Family Dwelling Code is amended by deleting Section 3905.7 and substituting the following:

3905.7 Headroom. The minimum headroom for working spaces for service equipment and panel boards shall be 6 1/2 feet (1981 mm). Where the electrical equipment exceeds 6 1/2 ft (1981 mm) in height, the minimum headroom shall be not less than the height of the equipment.

F. Section 4101.6.2 of the 1995 Edition of the CABO One and Two Family Dwelling Code is amended by deleting Section 4101.6.2 and substituting the following:

4101.6.2 Service disconnect location. The service disconnecting means shall be installed at a readily accessible location either outside of a building or structure, or inside. The main service disconnecting means shall not be located more than five (5) feet from the point where the service conductors enter a building or other structure. Service disconnecting means shall not be installed in bathrooms.

G. Section 4101.7 of the 1995 Edition of the CABO One and Two Family Dwelling Code is amended by deleting Section 4101.7 and substituting the following:

4101.7 Maximum number of disconnects. The service disconnecting means shall consist of not more than six switches or six circuit breakers mounted in a single enclosure or in a group of separate enclosures of more than 225 amps. Service equipment shall have only one (1) main means of disconnecting services of 225 amps or less.

H. Section 4201.2 of the 1995 Edition of the CABO One and Two Family Dwelling Code is amended by deleting Section 4201.2 and substituting the following:

4201.2 Branch-circuit and feeder ampacity. Branch-circuit conductors shall have an ampacity not less than the maximum load to be served. In addition, conductors of multi-outlet branch circuits supplying receptacles for cord- and plug-connected portable loads shall have an ampacity of not less than the rating of the branch circuit. Cable assemblies where the neutral conductor is smaller than the ungrounded conductors shall be so marked. Aluminum and copper-clad aluminum conductors shall not be used on any branch circuit wiring.

I. Section 4401.2 of the 1995 Edition of the CABO One and Two Family Dwelling Code is amended by deleting Section 4401.2, and substituting the following:

4401.2 Convenience receptacle distribution.

4401.2.1 Spacing. In every kitchen, family room, dining room, living room, parlor, library, den, sun room, bedroom, recreation room, or similar room or area of dwelling units, receptacle outlets shall be installed so that no point along the floor line in any wall space is more than 6 feet (1829mm), measured horizontally, from an outlet in that space, including any wall space 2 feet (610mm) or more in width and the wall space occupied by fixed panels in exterior walls, but excluding sliding panels in exterior walls. The wall space afforded by fixed room dividers, such as freestanding bar type counters or railings, shall be included in the 6-foot (1829mm) measurement.

4401.2.2 Wall space continuous. As used in this section, a wall space shall be considered a wall unbroken along the floor line by doorways, fireplaces and similar openings.

4401.2.3 Wide walls and corners. Each wall space that is 2 feet (610mm) or more wide shall be treated individually and separately from other wall spaces within the room. Where unbroken at the floor line, two or more walls of a room that form a corner shall be considered as a wall space. See Figure 4401.2.

Exception: When a side swinging bedroom door is open 90 degrees and within 6" of a wall parallel to the 90 degree open door, the wall space may be increased to 4 feet when measured along the floor line from the hinge side of the door.

4401.2.4 Outlets in floors. Receptacle outlets in floors shall not be counted as part of the required number of receptacle outlets unless located within 18 in. (457 mm) of the wall. The receptacle outlets required, by this section, shall be in addition to any receptacle that is part of any lighting fixture or appliance, located within cabinets or cupboards, or located over 5 1/2 feet (1676 mm) above the floor.

Exception: Permanently installed electric baseboard heaters equipped with factory installed receptacle outlets, or outlets provided as a separate assembly by the baseboard manufacturer, shall be considered equivalent to the required outlets or outlets for wall space used by such permanently installed heaters. Such receptacle outlets shall not be connected to the heater circuits.

J. Section 4401.4 of the 1995 Edition of the CABO One and Two Family Dwelling Code is amended by deleting Section 4401.4(1), and substituting the following:

4401.4 Small appliance receptacles. The two or more 20 ampere small appliance branch circuits required by Section 4203.2 shall serve all receptacle outlets, including refrigerating appliances, in the kitchen, pantry, breakfast room, dining room, or similar area of a dwelling unit. Such circuits, whether two or more are used, shall serve no other outlets. There shall not be more than two (2) receptacles installed on each small appliance branch circuit.

Exceptions:

1. Receptacle outlets located in such rooms and areas to provide power for electrical wall clocks and gas fired cooking appliances, and receptacle outlets located outdoors shall be supplied by the small appliance branch circuits or by other branch circuits.

2. Where located in such rooms and areas, receptacle outlets installed to supply only motor loads and switched receptacles outlets provided in lieu of lighting outlets shall not be required to be supplied by the small appliance branch circuits.

K. Section 4401.7 of the 1995 Edition of the CABO One and Two Family Dwelling Code is amended by deleting Section 4401.7 and substituting the following:

4401.7 Bathroom and toilet room. In dwelling units, at least one wall receptacle outlet shall be installed in bathrooms within 36 inches (914mm) of the outside edge of each basin. Bathroom receptacle outlets shall be supplied by at least one 20-ampere branch circuit. The receptacle outlets shall not be installed in a face-up position in the work surfaces or countertops in a bathroom basin location.

L. Section 4401.8 of the 1995 Edition of the CABO One and Two Family Dwelling Code is amended by deleting Section 4401.8 and substituting the following:

4401.8 Outdoor outlets. At least one receptacle outlet accessible at grade level shall be installed outdoors at the front and back of each dwelling unit having direct access to grade. For dwelling units with patios, balconies or decks, an outdoor receptacle outlet shall be installed adjacent to door opening on to the patio, balcony or deck.

M. Section 4408.7, Exception 1., of the 1995 Edition of the CABO One and Two Family Dwelling Code is amended by deleting Section 4408.7, Exception 1. and substituting the following:

1. This section shall apply to existing branch-circuit installations only. New branch-circuit installations shall comply with Section 4408.9. For frames of electric ranges, wall-mounted ovens, counter-mounted cooking units, clothes dryers, and outlet or junction boxes that are part of the circuit for these appliances shall be grounded in the manner specified by Section 4408.9(3); or, except for mobile homes and recreational vehicles, shall be permitted to be grounded to the grounded circuit conductor if all of the conditions indicated in Section 4408.9(3) are met.

N. Section 4503.10 of the 1995 Edition of the CABO One and Two Family Dwelling Code is amended by deleting Section 4503.10 and substituting the following:

4503.10 Pendants. No parts of cord-connected fixtures, hanging fixtures, lighting track, pendants, or ceiling fans shall be located within a zone measured 3 ft. (914 mm) horizontally and 8 ft. (2.44 m) vertically from the top of the bathtub rim. No switches shall be located within this zone unless the fixture is protected by ground-fault circuit interrupter protection for personnel. This zone is all encompassing and includes the zone directly over the tubs and/or shower areas.

O. Section 4601.4 of the 1995 Edition of the CABO One and Two Family Dwelling Code is amended by deleting Section 4601.4 and substituting the following:

4601.4 Flexible cords. Cord- and plug-connected appliances shall use cords suitable for the environment and physical conditions likely to be encountered. Flexible cords shall only be used where the appliance is listed to be connected with a flexible cord. Specific appliances have additional requirements as specified in Table 4601.4. The receptacles for the specific appliances contained in Table 4601.4 shall be on a separate branch circuit.

P. Table 4601.4 of the 1995 Edition of the CABO One and Two Family Dwelling Code is amended by deleting Table 4601.4 and substituting the following:

TABLE 4601.4
FLEXIBLE CORD LENGTH

APPLIANCE

MINIMUM CORD LENGTH (in)

MAXIMUM CORD LENGTH (in)

Kitchen waste disposal

18

18

Built-in-dishwasher

36

48

Trash Compactor

36

48

Q. Section 4601.9 of the 1995 Edition of the CABO One and Two Family Dwelling Code is amended by deleting Section 4601.9 and substituting the following:

4601.9 Water associated installations. Swimming pools, fountains, spas, hydromassage bathtubs, hot tubs and similar installations shall comply with Article 680 of the 1999 Edition of the National Electrical Code.

R. Section 4601 of the 1995 Edition of the CABO One and Two Family Dwelling Code is amended by adding the following new section:

4601.10 Permitted to be cord- and plug-connected or permanently connected. Wall-mounted ovens and counter-mounted cooking units complete with provisions for mounting and for making electrical connections shall be permitted to be permanently connected or, only for ease in servicing or for installation, cord- and plug-connected. These cooking units shall be served by a separate branch circuit."

Section 4. This Ordinance shall take effect its passage, the welfare of the Metropolitan Government of Nashville and Davidson County requiring it.

Sponsored by: Leo Waters

LEGISLATIVE HISTORY

Introduced: July 6, 2000
Passed First Reading: July 6, 2000
Referred to: Planning Commission - Approved
Budget & Finance Committee
Public Works Committee
Planning & Zoning Committee
Passed Second Reading: July 18, 2000
Passed Third Reading: August 1, 2000
Approved: August 4, 2000
By: mayor1.gif (1554 bytes)