SECTION 705—LIGHTING SYSTEMS
705.01 Description
This work shall consist of furnishing, installing, and testing proposed lighting systems and removing, modifying, or relocating existing systems in accordance with these specifications and in conformity to the lines and details shown on the plans or established by the Engineer.
705.02 Materials
Photoelectric controls shall conform to Section 238.
705.03 Procedures
The Contractor shall verify or locate the origin of the power source and verify voltage when modifying, removing, or relocating existing electrical systems. The Contractor shall also inform the Engineer at least 705.03 48 hours prior to the anticipated time of de-energizing any portion of the electrical system in order to facilitate such work. Work shall be performed in accordance with the NEC and the requirements of the local power company, unless otherwise specified on the Plans.
a.Luminaires for Roadway Lighting: The Contractor shall install luminaires in accordance with the manufacturer’ s recommendations. Luminaires shall be adjusted for maximum illumination and uniform dispersion on the pavement or sidewalk as directed by the Engineer.
b.Sign Luminaires: The Contractor shall ensure luminaires are shielded to eliminate glare or extraneous light on the roadway so that these provide a maximum-to-minimum uniformity ratio of 6:1 or better once installed. When tested at the center of a 10-foot-square test panel, the luminaire shall provide at least 30 average initial foot-candles and a gradient (ratio of illumination on any two adjacent square feet of sign surface) of 2:1 or less.
c.High-Mast Luminaire Assemblies: Assemblies shall consist of a head frame assembly; luminaire ring; luminaire(s); winch assembly; a fail-safe mechanism to prevent accidental lowering of the luminaire ring; and incidentals necessary to raise, lower, supply, and control power to the luminaire ring. When an electric drill is required for raising and lowering the assembly, the Contractor shall furnish one drill for each set of five high-mast luminaire assemblies or fraction thereof.
1.The lowering system shall be compatible with the lighting pole and capable of raising and lowering a luminaire ring with eight luminaires.
2.The head frame assembly, luminaire ring, and canopy shall be constructed of a material that is resistant to weather, corrosion, and ultraviolet rays. The centering arms of the assembly shall provide stabilization of the luminaire ring during raising and lowering operations and shall maintain contact with the lighting pole for at least 2/3 of its length. A fail-safe latching mechanism shall be included in the head frame assembly that will remove the tension from the lowering cables when the luminaire ring is attached.
3.The winch assembly shall include power cables of 600-volt, multi-conductor No. 10 (minimum), UL T ype SO; lowering system cables of stranded stainless steel of sufficient strength and number to support and lower the luminaire ring and luminaires; and a 1/2-inch heavy-duty reversible electric drill or electric motor suitable for operation of the lowering\raising of the luminaire ring and luminaires at the voltage shown on the plans. The winch assembly shall have a remote control that allows operation at least 15 feet from the lighting pole and shall be designed for alternatively lowering and raising the assembly by hand if necessary.
4.A junction box with a prewired terminal block shall be furnished on the lowering ring with provisions for a photoelectric control. A circuit breaker shall be mounted in the handhole area of the lighting pole. A watertight twist-lock power receptacle and plug shall be provided for de-energizing the luminaire ring during raising and lowering operations and providing power for testing luminaires in the lowered position.
d.Ballast: The ballast shall be compatible with the luminaire and shall be a multi-volt type capable of operating on 120-, 208-, 240-, and 277-volt electrical services. Ballasts for luminaires with lamp wattages of 150 watts or less may be non-regulating or regulating, having a power factor of more than 90 percent. Ballasts for luminaires with lamp wattages more than 150 watts shall be regulating. Non-regulating ballasts shall regulate lamp wattage within a line voltage variation of ±5 percent. Regulating ballasts shall regulate lamp wattage within a line voltage variation of ±10 percent. The Contractor shall certify that ballasts serving high-pressure sodium luminaires have a 705.03 volt watt characteristic curve that intersects the lamp voltage limit lines at points between the watt- age limit lines throughout the full range of the lamp life and rated ballast line voltages. The basic and allowed variable volt-watt characteristic curves shall not intersect the wattage limit lines. Ballasts and starting aids shall be capable of operating with the lamp in an open condition for 6 months without significant loss of ballast life and starting the lamp at temperatures as low as -20 degrees F .
e.Control Centers: Enclosures for control centers shall be NEMA 3R with provisions for locking. Electrical equipment shall be UL listed for the use indicated on the plans. Door openings for control center cabinets shall be at least 8 inches wider than the enclosed widest panelboard or other installed equipment, whichever is wider. When multiple door control centers are provided, the door openings for each door shall be identical. Control Centers shall have an automatic on/off door switch located in the cabinet frame so that it will provide for the unobstructed illumination of electrical items inside the cabinet. Each door switch shall be connected to the 120-volt, single-phase, AC power line for operation of the lamp (number of lamps and wattage depends on the cabinet size). The switches shall turn light on continuously when any door is in the open position. At least one 120-V olt, 20- ampere Ground-Fault Circuit Interrupter (GFCI) duplex receptacle with LED indicator shall be installed in each electrical cabinet.
f.Testing Electrical Components: After energizing the lighting system, the Contractor shall demonstrate to the Engineer that electrical components are in proper working order. Faulty compo- nents shall be repaired or replaced by the Contractor at his expense. The Contractor shall perform an operational test of the completed lighting system under normal operating conditions for at least 3 consecutive days. The Contractor shall provide the Engineer at least 48 hours notice prior to the start of the operational testing. Defective materials or improper installations shall be corrected by repairs or replaced by the Contractor at his expense.
g.Electrical Equipment Containing Polychlorinated Biphenyl (PCB) : This work shall consist of determining, removing and disposing of electrical equipment containing PCB present as a dielectric fluid or paste. Electrical equipment that may contain PCB consists of, but is not limited to, capaci - tors, ballasts and transformers.
1.Determination: The Contractor shall determine if the electrical equipment that is to be removed contains PCB. This determination shall be made prior to removal of the equipment in accor - dance with the following:
a.Check the nameplate on the equipment to determine if any of the following trade names for PCB is indicated: ALC DK Nepolin Apirolio Dykanol Non-Flammable Liquid Aroclor EEC-18 No-Flamol Aroclor B Elemex Phenoclor Asbestol Eucarel Pydraul ASK Fenclor Pyralene Askarel Hyvol Pyranol Capacitor 21 Iclor Pyroclor Chlorextol Interteen Saf-T -Kuhl 705.04 Chlorinol Kanechlor Santotherm Clorinol Kennechlor Santotherm FR Clorphen Magvar Santovac 1 and 2 Diaclor MCS 1489 Therminol
b.If these trade names are not indicated on the nameplate of the equipment and the equipment is not labeled as containing PCB, the Contractor shall contact the equipment manufacturer for a determination of the existence of PCB in that equipment. The Contractor shall provide the information requested by the manufacturer, which will include at least the type, model, and serial number of the equipment. If the manufacturer indicates PCB does not exist in the equipment, the Contractor shall request that documen- tation in writing on the manufacturing company’ s letterhead stationery. The documen - tation shall include all information needed to verify the absence of PCB in the piece of equipment referenced.
c.If the procedures herein do not allow determination of the existence of PCB or if the manufacturer will not provide the necessary documentation in writing, the Contractor shall assume that PCB is contained within that equipment.
d.The Contractor shall notify the Engineer in writing of the determination of the existence of PCB in each piece of electrical equipment that contains or could contain PCBs. This documentation shall also include the equipment company’ s name, representative’ s name, and telephone number for each company contacted to determine the existence of PCB. If the Contractor is able to obtain written confirmation from the manufacturer that PCB was not in a particular piece of equipment, the Contractor shall furnish the manufacturer’ s original letter to the Engineer and retain a copy for their records.
2.Removal and Disposal: The Contractor shall follow the Environmental Protection Agency’ s guidelines and the Virginia Department of Environmental Quality’ s guidelines for the spills, removal, transportation, and disposal of PCB-laden materials. The Contractor shall provide the shipping manifest and all other correspondence concerning the proper removal and disposal of PCB-laden materials to the Engineer.
705.04 Measurement and Payment
Luminaires will be measured in units of each and will be paid for at the contract unit price per each for the wattage and type specified. This price shall include the luminaire body; slip fitters, refractors, ballasts, reflectors, sockets with lamps, conductor cables to the termini at the base, photoelectric controls and sockets, and adjustment and testing. Luminaires for sign lighting will not be measured for separate payment but shall be included in the price for overhead and sign structures. High-mast luminaire assemblies will be measured in units of each and will be paid for at the contract unit price per each for the number of luminaires, wattage, and type specified. This price shall include the luminaire rings, lowering devices with head frames and assembly, winch assembly, electric raise/lower units, lowering cables, conductor cables to the termini at the base, luminaire units, lamps, photoelectric controls and sockets, testing and adjustments. Control centers will be measured in units of each and will be paid for at the contract unit price per each for the standard and type specified. This price shall include the control center metal enclosures, conduits including fitting and straps, grounding electrode(s), conductor cables, anchor bolts and tem - 705.04 plates, excavating, concrete, safety switches, panel boards, contactors, circuit breakers, photoelectric controls, terminal blocks, selector switches, transient voltage surge suppressor, GFCI and GFCI enclosure, lighting fixture(s) including housing and lamp(s), door activated light switch, testing, and adjustment. Determination of electrical equipment containing PCB will not be measured for separate payment but the cost thereof shall be included in the price bid for the removal of the electrical equipment. Removal and disposal of electrical equipment containing PCB will be paid for in accordance with Section 109.05 for extra work. Payment will be made under: ——————————————————————————————————————Pay Item Pay Unit——————————————————————————————————————Luminaire (Wattage, and type) Each High-mast luminaire assembly (Number of luminaires, wattage, and type) Each Control center (Standard and type) Each——————————————————————————————————————
Division VIII
INTELLIGENT TRANSPORTATION SYSTEMS
Referenced in this section
Sections that cite this one
Lighting Systems in other states
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Source: Road and Bridge Specifications, 2020 Edition. Pages 898–904 of 1,065. View official source ↗