Street Lighting

S.607 STREET LIGHTING

  1. GENERAL
    1. Street lights are required in the City. The street lighting equipment, placement, and system layout shall be reviewed and approved by the city's designated official prior to beginning installation. The entire street lighting system shall be provided, furnished and installed by the Owner/Developer. Lighting and electrical system shall be installed by a city licensed, bonded Electrical Contractor. The installation shall be inspected by the City, before backfilling.

      Minimum requirements are as follows:
      1. Light standards shall be located so as to provide an average illumination of .1 footcandles on the traveled surface and an average of .05 footcandles on walkways.
      2. Light standards shall be approved by the City.
    2. Indiana Department of Transportation (INDOT), lighting specifications and standards shall be applied to all streets, alleys, rights-of-way, and thoroughfares in the City of Plymouth. Installations shall be made in full compliance and accord with the National Electrical Code, the National Electrical Safety Code, Local Utilities requirements, City of Plymouth, IOSHA, and INDOT Standards and Specifications. Close attention must be given to the various requirements of differing utilities related to locations and separation distances.
    3. All street lights, equipment and light posts must be approved by the Street Department Head.
  2. MATERIALS
    1. The following items shall be the equipment/materials used in the street lighting system:
      1. All conductors shall be installed in conduit, or shall be 4 wire cable-in-duct. All wiring circuits shall include appropriately sized grounding conductors. Except where rising to a pole or junction box, all conduits and cable-in-duct shall be installed buried a minimum of 30 inches below final finish grade. A suitably worded, 6 inch wide direct burial detectable polyethylene warning tape shall be installed directly above all underground installation at 12 inches below finish grade. Conduits shall have expansion joints at appropriate intervals and within 12 inches of all riser and termination locations. All main conduit runs shall be a minimum of 2 inch internal diameter. Local branches up to 50 feet long from a junction box to one destination may be 1 inch minimum internal diameter. Backfill and compaction shall meet INDOT standards, which apply by adoption to City of Plymouth street lighting installations. Raceways shall be terminated with suitable insulated grounding fittings.
      2. All wires shall be copper, installed in conduit or cable-in-duct, with cross linked polymer (type XHHW or RHW-USE) insulation, suitable for direct burial and immersion in water. Thermoplastic insulation shall not be used. Minimum wire size shall be # 6 AWG.
      3. A 100 watt Quartz - 6300 Illumine medium base lamp shall be utilized.
      4. A High Power Factor - Multi-tap, multivolt High pressure sodium high reactance, copper wound, ANSI Spec S-62, outdoor ballast system shall be utilized.
      5. The ballast and lamp system shall be integrally mounted at the top of the pole.
      6. Electrical boxes shall be waterproof and lockable, with approved tamperproof fasteners and suitable marking.
      7. Pole bases and other structures shall be installed in concrete to a depth 6 inches below the frost line. All pole bases, metallic boxes, and structures shall be individually grounded with auxiliary grounding rods. Ground rods shall be a minimum 1/2" in diameter and 10 feet in length, installed with tops at least 12 inches below finish grade. All ground connections shall be with exothermic welds. Clamp type grounding connections are not approved for ground rods.
      8. Poles shall have accessible handholes at the pole base, and be of sufficient internal diameter to accommodate the conduit sizes, wiring and connections to be brought into the pole.
      9. Each pole light shall be individually fused to prevent a short from blowing the entire circuit.
      10. Lighting circuits shall be controlled by fully rated lighting contactors in appropriate type lockable enclosures.
      11. All structures and installation shall present an appealing and inconspicuous appearance, substantial and enduring type construction and materials, and be of the highest quality workmanship. All structures shall be pre-approved and workmanship shall be inspected by the city inspector. Any installation not meeting the code or presenting an appealing appearance shall be reworked and made to conform with this specification.
      12. All materials shall be specifically manufactured for the purpose as they are used. Materials shall be applied and installed in accord with the manufacturer's installation instructions, and recognized industry written standards of installation. Where Underwriters Laboratories has established a standard for the materials or equipment involved, only U.L. approved, listed or labeled products shall be provided.
  3. SUBMITTALS
    1. The preliminary plans shall show the location of all service point(s), street lights, conduits, conduit types and depths, junction boxes, conductor sizes and types.
    2. Material submittals must be made with the preliminary plans listing the materials being used and the manufacturer. This includes but is not limited to light poles, ballast, lamps, globes, etc.
    3. Three sets of final "as-built" plans and a copy on disk using the City's current version of Auto-Cad shall be prepared and turned over to the city. The plan shall be professionally drafted, shall clearly show the final wiring layout to scale, and contain diagrams indicating breakers, circuits, conductor size, etc.
  4. INSTALLATION
    1. Service point(s) shall be located in the right-of-way and shall meet the installation and location standard specified by the local electric power company.
    2. Electrical circuit boxes and photocell shall be installed in the right-of-way on an electrical service panel.
    3. Switches, circuit breakers and control devices shall be rated for the short circuit interrupting current available and for the application involved. Breakers shall be identified by a typewritten panel legend. Panels shall have copper busses and be rated for the application in which they are used.
    4. Photocells shall be located in a protected location and they shall switch only an individual lighting unit or a contactor.
    5. All conductor splices shall be in a junction box or at a handhole.
    6. Street light pole foundations shall be installed as shown in the City of Plymouth - Design Standards; or City Engineer approved equal.
    7. Street light poles shall be located within the street right-of-way, but no closer than six (6) feet from the edge of the traveled portion of the street.
    8. Grounding rods, minimum 10 feet in length, shall be utilized at the service and at each light pole.
    9. Contractor shall locate all existing utilities in the area of work. If utilities are to remain in place, they shall be marked and protected during installation operations.
    10. Should unanticipated, uncharted or incorrectly charted utilities, piping, or other obstructions be encountered during installation, they shall be reported immediately to the City. Co-operate with procedure directions from the City. Repair and replace damaged underground or aboveground installations to the satisfaction of the City of Plymouth.
    11. Repair and replace, to the satisfaction of the City of Plymouth, all damages to structures, curbs, walks, pavers, streets, drives, alleys, topsoil, sod, trees, shrubs, and other landscaping that is existing and to remain. All such items are to be protected unless specifically exempted in writing.

END OF SECTION