The following additional requirements (Toledo Area Wiring Standards) are hereby adopted as supplementary to the provisions of the National Electrical Code. References in parentheses are to the National Electrical Code.
I. WIRING DESIGN AND PROTECTION
Branch Circuits (Article 210)
Permissible Loads (210-24)
A. A branch circuit that exceeds sixty feet from the point of distribution to the furthest outlet on the circuit shall be supplied with No. 12 or larger conductor.
B. In resident occupancies, branch circuits which supply receptacles in kitchen, dining and breakfast rooms, and areas adjacent to laundries shall not supply other outlets, and such circuits shall have conductors not smaller than No. 12.
C. In commercial buildings, wiring shall be a minimum of No. 12 wire. Low voltage circuits will not be subjected to this requirement. All wiring shall be enclosed in approved metallic raceways.
Feeders (Article 215)
Conductor Size (215-2)
Feeders must be No. 10 wire or larger and be of at least sufficient rated capacity to supply the full load connected thereto.
Services (Article 230)
Service Entrance Cable (230-4)
Service entrance cable may be used from the point of attachment to the meter socket. It may be used from the meter socket to main disconnecting means if enclosed in approved raceway.
Point of Attachment to Buildings (230-26)
The point of attachment of a service drop to a building shall not be less than twelve feet above finished grade, and at a location approved by the local electric utility.
Service Mast
All service entrance masts shall be installed with an approved flashing. Minimum size of masts shall be two-inch rigid steel conduit or its equivalent in mechanical strength, with a point of attachment of utility drops to be between twenty-four inches and thirty inches above the roof line. Any circumstances causing a higher point of attachment than thirty inches above the roof line will require guying of the mast.
Conduit Below Grade (230-32)
All conduits below grade shall not enter directly into disconnects and/or panels. A suitable means of drainage shall be installed prior to entering the switch or panel. From the draining fitting entrance may be made only into the side or bottom of the switch or panel.
Service Entrance Conductors
Buildings supplied from overhead lines shall have the point of entrance into the building along an outside wall, terminating in suitable service equipment, before continuing into the inner space of the building for distribution.
Switches and Circuit Breakers (230-70)
Item G. Means shall be provided for a single main disconnect in each new family unit, in a readily accessible location. Paralleling an existing main disconnect, in a previously constructed family unit, provided it is sixty amperes or greater, will be allowed.
All new single-family dwellings shall have a main service of 100 amperes minimum.
Commercia1 Buildings (230-70G)
Article 230-70G allows up to six subdivisions of the main service and will be permitted in a group installation before a main disconnect is required. The service shall terminate at a readily accessible point at a minimum practical distance from the point of entrance to the building in a readily accessible location.
Grounding and Bonding (Article 250)
Methods of Grounding (410-96)
A. All conduit or metal raceway entering service equipment from the supply source shall be bonded and grounded with a grounding bushing containing a smoothly rounded insulating surface.
B. Such bonding will also be required for conduit leaving service equipment to points of distribution, provided the conductor is No. 6 or larger.
C. Neutral bar bonding screw must be installed in service equipment.
Underground Feeder and Branch Circuit Cables (Article 339)
Crawl Spaces
U.F. cable or similar approved moisture-resistant cable, electrical metallic tubing, flexible conduit or metallic raceways shall be used.
Exposed Wiring
Wiring that is exposed inside buildings shall be in conduit, electrical metallic tubing, flexible conduit or approved metal raceways.
Exceptions
Expanding the service entrance equipment in existing buildings will not be subject to the above requirements, when existing wiring is installed and maintained properly and in accord with prior Electrical Code standards.
Earth-bearing Walls
U.F. cable or its equivalent may be used in hollow spaces of earth-backed concrete block walls on any wall that is below grade level.
II. SPECIAL EQUIPMENT
Swimming Pools (Article 680)
The new article in the Code will be used as a standard with the following exceptions:
Lighting (680-4B).
No lighting fixtures shall be installed for operation at more than fifteen volts. All lighting fixtures shall be equipped with flexible grounding conductor.
Water Heating Device
Electrical heating device of the submersible type shall not be permitted for direct use in pool water. Heaters must be installed remotely to main pool water. Components used for making up electrical heaters must be of a U. L. approved design.
For clarity the following article is repeated here:
Wire Recommendations and Transformer Tap
Selection Chart for 12 Volt 300 Watt Lamp Load
Conductor Length Secondary Voltage Tap for (Includes Conductor Between Cable Sizes Transformer and Fixture) #6 #8 #10 5-15 Feet * * 13V 15-25 Feet * 13V 13V 25-40 Feet 13V 13V 14V 40-65 Feet 13V 14V + 65-100 Feet 14V + + |
* Use lower cost, smaller cable.
+ Reduce conductor length or use larger size cable.
Outside Branch Circuits (Article 730)
Scope (730-1)
"Maypole" installations where a centrally located meter pole serves drops to several buildings will not be required to be switched or fused, until the conductor enters the building.
III. WATTAGE SCHEDULES
Residential Occupancies Watts |
Porches, vestibules, hallways, stairways, attics, closets: |
Side or ceiling 60 Outside receptacles, grounding type 300 |
Reception hall and upper hall: |
Side 80 Ceiling 150 Convenience 150 |
Sun parlor, solarium, breezeway: |
Side 80 Ceiling 150 Convenience 300 |
Living room, library, music room, dens, etc.: |
Side 80 Ceiling 150 Clock, picture and mantel outlets when located five feet above floor 50 Convenience receptacles 300 |
Recreation room and family room: |
Side 80 Ceiling 150 Convenience 300 |
Dining rooms: |
Ceiling 300 Convenience 1,000. (each) |
*Kitchen and kitchenette, dinette (not partitioned): |
Sink or side 100 Fan 100 Ceiling 200 Convenience 1,000. (each) Refrigerator or freezer (portable) 300 Dishwasher and disposal shall be on a separate circuit with no other item 2,000. (#12 wire, 20 amp.) |
Bedroom and dressing room: Watts |
Side 60 Ceiling 150 Convenience 100 |
Bathrooms and lavatories: |
Side 60/lampholder Convenience 300 Ceiling 150 |
Note: Where permanent electric heaters are installed, the outlet is to be computed at 100 percent of equipment rating. |
Areas below grade: |
Ceiling (per 200 sq. ft. of area) 100 Convenience 150 |
Furnace: |
Furnace and attic fan, on one circuit 500 |
*Laundry areas: |
Side 100 Ceiling 150 Washing receptacle (or ironer) 2,000 Additional receptacles 1,000 |
Attached garage: |
Exterior floodlighting 150/lampholder Exterior bracket fixture 100 Exterior weatherproof receptacles 300 each w/one per circuit Ceiling light per car space 150 At least one convenience receptacle per car space 300 Detached garages must qualify, if wired. |
*Water pumps |
Water pumps shall be on a separate branch circuit to assure continuity of service. |
* Use name plate wattage for permanently installed equipment. When three or more permanent appliances are installed, use 100 percent of largest and fifty percent of the balance of the appliance name plate wattage. In those rooms where more than one lighting fixture is installed, such as recessed lights, coves and/or valances, the total wattage on such fixtures as listed by U. L. shall be used in computing the wattage schedule for each room. Where continuous fluorescent tubes are used for luminous ceilings, coves and/or valances, each single row of tubes shall be computed at twelve watts per lineal foot.
Unfurnished areas capable of being converted to usable living areas shall have one outlet furnished on a separate circuit.
Multi-family Dwellings
(See wattage schedules in this section.)
Note: Use 100 percent of first 4,000 watts, and use fifty percent for balance of wattage.
Eaveline and Outline Lighting
Eaveline and outline wiring outlets shall not be less than forty watts per lineal foot.
Gas Stations, Greasing Lubritoriums
Exterior outlets (except outline lighting): Not less than 200 watts each.
Interior outlets: Not less than 100 watts each.
Convenience outlets (office or salesroom): Not less than 200 watts each.
Public Garage
Show windows: Not less than 200 watts per lineal foot.
Sales or display rooms: Not less than four watts per square foot (base receptacles not included).
Offices: Not less than four watts per square foot.
Repair rooms or car storage: Not less than four watts per square foot.
Exterior outlets on front (except outline lighting): Not less than 500 watts each.
Wash racks: Separate circuit or circuits.
Convenience outlets: Not less than 300 watts each.
Commercial; Retail and Wholesale
Show windows: Not less than 200 watts per lineal foot.
Counter cases: Not less than fifteen watts per lineal foot.
Store: Not less than four watts per square foot.
Wall cases: Not less than twenty-five watts per lineal foot.
Convenience outlets: Not less than 200 watts each.
Exterior outlets on front (except outline lighting): Not less than 500 watts per outlet.
Storage areas: Not less than 100 watts per outlet, and one watt per square foot.
Warehouses
Lighting: Three watts per square foot.
Outlet receptacles: 200 watts each.
(Ord. 611. Passed 11-14-66.)