643.09Service Connection The Contractor shall furnish and ins tall the necessary

643.09 Service Connection The Contractor shall furnish and ins tall the necessary

electrical service as directed by the Utility Company. The Con tractor shall make all arrangements for the service connection and be responsible for all charges incurred thereby. Under no condition shall any equipment, except that shown on th e plans, be installed on any Utility Facilities. Traffic signal services shall have an automatic transfer switch such as a GENERLINK model MA23/24 – S installed, thi s will be required on traffic signals only not beacons or dynamic signs. Whenever a service connection is to be made, the Contractor sha ll contact the Utility Company involved and inform them of the location, pole number, and time proposed for the service connection. The traffic cabinet shall be marked with: An appropriate arc flash plaque or decal with the following inf ormation Flash hazard boundary Cal/cm2 hazard at 18 inches PPE level Shock hazard when cover is off Limited approach boundary Restricted approach boundary The prohibited approach boundary This shall be located on the outside of the equipment and shal l be visible, weatherproof, and fade resistant, and not easily removed. The Contractor shall be responsible for all outstanding bills f or preliminary work done by the Utility Company during the i nstallation of the traffic s ignal system, to facilitate the service connection. A service ground rod shall be installed if the service meter tr im is not grounded. A total of 4, 10’ service ground rods shall be installed and pr operly connected together in the cabinet foundation.. The Contractor shall be responsible for grounding the system to 5 ohms or less tested without an electrical connection to the utility neutral or grou nd conductor. The grounding shall be performed using a ground meter with reference grounds. In the event that a 5-ohm reading is not achieved, the Contractor shall install a chem-ro d grounding electrode in close proximity to the cabinet. The chem-rod shall be properly connec ted to the four rod, grounding system in the cabinet. The chem-rod shall consist of a 10’ copper rod (vertical or horizontal orientation) filled with common salt and desiccant, back filled with natural earth 6-127 bentonite clay ground enhancement material. The chem rod shall be installed per manufacturer’s instructions. The location and orientation for t he chem-rod installation shall be approved by the Resident. All testing shall be done in the p resence of the Resident. All meter mounting devices shall be installed so that the meter s will be upright (plumb). They shall be installed with the top of the meter not less than 48 inches nor more than 60 inches from the floor to the final grade. Exceptions to this he ight requirement will be made where special permission has been given to install group or mod ular metering, overall metering enclosures, or pole-mounted meters. Level grade shall be maintained for a minimum of 3 feet in front of the meter enclosure to provide a safe working space. In order to meet this requirement on uneven terrain, as an option, the C ontractor may install a pressure-treated wood platform. For any non-residential (industrial or commercial) self-contain ed meter socket the by- pass requirements are single phase, 100 or 150 amp, single hand le lever operated. The Contractor shall meet all requirements and regulations of U tility Companies when installing equipment on their poles and for the service connect ion. It is the responsibility of the Contractor to contact the appropriate Utility to determine their specific requirements.

643.10 Wiring The Contractor shall furnish and install suffici ent cable and wire to

operate the system properly as shown on the plans and as direct ed. The following color code shall be used where possible: R e d W i r e R e d, artery O r a n g e W i r e Y e l l o w , a r t e r y G r e e n W i r e R e d, side street Orange with Tracer Y e l l o w , s i d e s t r e e t Green with Tracer G r e e n, side street White and white with tracer Common for all signals and bond B l u e A l l s t e a dy burning arrows Blue with Tracer I n t e r m ittent arrows R e m a i n i n g D e t e c t o r s a nd pedestrian signals The white wire and white wire with tracer shall be used for all common connections and it shall be continuously connected to ground at the controller. There shall be no wire splices. Connections shall be made on a terminal board inside a watertight galvanized steel or aluminum junction box or in an a erial terminal enclosure with protective cover rated for 600 volts. Spade type copper terminal ends shall be used to attach all con ductors to terminals. All exposed metal parts, including service conduit and the controll er cabinet shall be bonded and grounded. 6-128 Not more than 3 conductors shall be brought to any one terminal . Terminals shall be mounted to face the cabinet door. The number and size of conductors required in each cable will b e indicated on the plans.

643.11 Vertical Clearance Unless otherwise specified on the pl ans and/or specifications,

vertical clearances for vehicular and pedestrian heads shall be in conformity with the MUTCD. All clearances shall be uniform among each type of head or mounting scheme. Clearance for span wire mounted flashing beacon heads shall be a minimum of 17 feet and a maximum of 18 feet.

643.12 Painting Unless otherwise indicated, all exterior parts of the following

equipment shall be delivered to the project finished with green or yellow enamel: Vehicular Signal Heads Pedestrian Signal Heads Pedestrian Push Button Detectors The outside of the steel controller cabinet shall be painted wi th aluminum paint. The Contractor shall apply one coat of green enamel to all exis ting equipment designated on the plans to be painted. The Contractor shall to uch up all scratches on exposed surfaces of new equipment with matching enamel after th e equipment has been installed. All exposed signal parts to be painted shall be cleaned and sha ll be dry when the paint is applied. No painting shall be done in damp weather nor when th e air temperature is below 40°F, unless otherwise permitted. The Contractor shall identify recently painted equipment with " Wet Paint" signs, and shall be responsible for all claims for damages resulting from contact with wet paint surfaces.

643.13 Power Factor In the event that the equipment is of such design that the power

factor is reduced below the requirement of the Utility Company, the Contractor shall furnish and install, without further charge, all equipment necessary to restore the power factor to a satisfactory percentage. Such equipment shall be accessible an d shall not be mounted on the Utility Facilities.

643.14 Field Tests Before acceptance of the work, the Contract or shall conduct the

following tests on all traffic signal equipment and circuits, b y a licensed electrician. The tests do not need to be performed in the presence of the Reside nt, but the test results shall be recorded on the Traffic Signal Quality Control Check List and s ubmitted to the Resident by the Contractor for acceptance. The form shall be signed by the licensed electrician certifying that the signal equipment and circuits meet the requ irements of section 634.14. 6-129

643.15 Timing The controller shall be timed as noted on the pl ans. The Contractor shall

notify the Resident, at least 1 week in advance, of their inten tion to initially operate the signals. At the time of initial operation of the new signals, the Contra ctor shall provide police protection from the local police department at the Contractor's expense until the Contractor demonstrates to the Resident that the signal operates in confor mance with this specification. 6-130

643.16 Final Cleaning Up After all work has been completed, th e Contractor shall

remove all barriers, "Wet Paint" signs, equipment and all debri s which has accumulated during the work. Unless otherwise specified in the plans, the Contractor shall r emove and deliver all unused signal equipment and wiring to the State of Maine, Depar tment of Transportation, as directed by the Resident. The Contractor shall notify the Stat e Traffic Engineer (207-624- 3620) as to time and date of such delivery. (Deliveries will b e accepted Monday through Friday between the hours of 7:00 A.M. and 4:00 P.M. only.) Not ification shall precede delivery by a minimum of 24 hours.

643.17 Documents The Contractor shall furnish two operation an d maintenance

manuals for all controller units, auxiliary equipment, vehicle detector sensor units, control units, and amplifiers. Documents shall be delivered with the c ontroller at the time of testing. Each manual must include, but need not be limited to the following:

643.18 Method of Measurement Traffic signals, traffic signal m odifications,

interconnect wire, video detection system, traffic signal contr ol system, and flashing beacons will each be measured for payment by the lump sum in pl ace. Temporary traffic signals will be measured for payment by the lump sum, satisfact orily installed, operated, and removed. Pedestal poles, strain poles, combination poles, and mast arm p oles with mast arms will be measured by each unit. Each loop detector installed, connected to appropriate phases i n the controller cabinet, complete and operational will be measured by the unit. 6-131 Excavation in solid ledge rock for replacement of wood poles wi ll be measured by the cubic yard. The depth of measurement will be to the bottom of the pole, and the diameter of measurement will be the pole diameter plus 30 inches.

643.19 Basis of Payment Traffic signal modifications, traffic signals, interconnect wire

and flashing beacons will be paid for at the contract lump sum price, which payment will be full compensation for furnishing and installing all materials, both new and reused, including, but not limited to wood poles, span wire, tether wires, backpla tes, visors, guys, controllers, vehicular heads, pedestrian heads, flashing beacons, wiring, ca ble, pole risers, LED lamps, and all appurtenances and incidentals, including design of the Traffic Signal Structures, required for a complete functi oning installation and for furnis hing all tools and labor necessary for completing the installation. Conduits, junction boxes, and foundations will be paid for under Section 626. Pedestal poles, strain poles, combination poles and mast arm po les with mast arms will be paid for at the contract unit price each which payment shall be full compensation for furnishing and installing all materials, tools and labor necess ary to erect the poles. Payment for temporary traffic signals shall include compensatio n for the removal of the system upon completion of the work. All materials used for tem porary traffic signals will remain the property of the Contractor. Operating the controlle r by hand will be paid for under Section 629. Payment will be made for each Loop Detector at contract price, which will be full compensation for materials, labor, and equipment for each loop installed and fully operational. Traffic signal control system will be paid for at the contract lump sum price, which payment will be full compensation for furnishing and installing all materials, including, but not limited to local intersection traffic signal controller, co ntroller cabinets, on-street master controller, supervisory PC software, and all appurtenances and incidentals required for a complete functioning installation. Video detection system will be paid for at the contract lump su m price, which payment will be full compensation for furnishing and installing all mat erials, including, but not limited to video processing unit, video cameras, supervisory PC software, and all appurtenances and incidentals required for a complete functioni ng installation. Payment for excavation of solid bedrock for the placement of wo od poles will be made under Item 206.07. Payment will be made under: P a y I t e m P a y U n i t 6-132

643.60 Flashing Beacon at: L u m p S u m

643.71 Traffic Signal Modification: Lump Sum 643.72 Temporary Traffic Signal: Lump Sum 643.80 Traffic Signals at: L u m p S u m

643.81 Traffic Signal Control System Lump Sum

643.83 Video Detection System L u m p S u m

643.86 Traffic Signal Loop Detector Each 643.90 Interconnect Wire Between: Lump Sum 643.91 Mast Arm Pole E a c h

643.92 Pedestal Pole E a c h

643.93 Strain Pole E a c h

643.94 Dual Purpose Pole E a c h

SECTION 644 - GLARE BARRIER Reserved SECTION 645 - HIGHWAY SIGNING

645.01 Description This work shall consist of designing, furni shing and installing new

signs, sign supports, delineators, Polyvinylchloride (PVC) Pipe and breakaway devices and removing, relocating and/or modi fying existing signs and sign s upports, in accordance with these specifications and in reasonably close conformity with th e Contract Plans.

645.02 General All equipment shall be new unless otherwise spe cified. Requests for

substitution of any specified material shall be submitted in wr iting with all documentation (specifications, mill certifications, etc.) in order to enable the Department to evaluate the proposal. Substitutes for specified material may be accepted, upon approval of the Fabrication Engineer. Substitutes shall give equal or better s ervice than the specified material. Where an existing system is to be modified, the exis ting material shall be removed, upgraded, or disposed of a s directed by the contract d ocuments. 645.021 Materials Materials shall meet the requirements specif ied in the following Sections of Division 700 - Materials: P o l y v i n y l c h l o r i d e ( P V C ) P i p e 706.08 R e f l e c t i v e S h e e t i n g 719.01 Demountable High Intensity Reflectorized Letters, Numerals, Symbols and Borders 719.02 A l u m i n u m E x t r u s i o n s 719.03 A l u m i n u m S h e e t s 719.04 Plywood 719.05 Demountable Reflectorized Delineators 719.06 A s s e m b l y H a r d w a r e 719.07 Aluminum Supports 720.01 Steel Supports 720.03