810 ELECTRICAL CABLE, WIRE, AND CONNECTORS

From MDOT Policy Manual
Jump to: navigation, search
810.01 DESCRIPTION.
Furnish and install loop detector wires and leads, electrical cable, cable ducts, wire, micro-loop probe sets, communication cable, and associated connectors.
810.02 MATERIALS.
Sealer for Loop Detector       911.06
Conduit       950.10
Electrical Cable and Wire       950.06
Communication Cable       950.06.08
Cable and Wire Connectors       950.14
Micro-Loop Probe       Refer to Contract DocumentsThe written agreement executed between an Administration and the successful bidder, covering the performance of the work and furnishing of labor, equipment and materials, by which the Contractor is bound to perform the work and furnish the labor, equipment and materials, and by which the Administration is obligated to compensate him therefore at the mutually established and accepted rate or price. The Contract Documents shall include the Invitation for Bids, Notice to Contractors, Instructions to Bidders, Proposal, Contract Forms and Bonds, General Provisions, Specifications, Supplemental Specifications, all Special Provisions, all Technical Provisions, all Plans and Notices to Proceed, also any written Change Orders and Supplemental Agreements that are required to complete the construction of the work in an acceptable manner, including authorized extension thereof.
810.03 CONSTRUCTION.
All conductors shall be copper. Unless specified, no cable splicing will be permitted. When specified, lighting cable splices and loop detector lead in cable splices will be permitted only in pull and junction boxes, manholes, and hand holes. Do not install cable until the entire related raceway, including manhole, hand hole, and foundation system is in place. Provide 6 ft of cable slack, neatly tied, coiled, and positioned in the bottom of manholes, hand holes, and cabinets. Provide 8 in. drip loops at all overhead entrance points into structures. Install insulated spade type terminal ends on all wiring placed on terminal blocks.
810.03.01 Direct Burial Cable. Install to the depth of cover specified. Install backfill as specified in 801.03.05.
810.03.02 Cable in Conduits. Install by method in a manner to prevent harmful stretching of the conductor, injury to the insulation, or damage to the other protective covering. Seal the ends of all cables until ready for connection. When installing more than one wire or cable in a single duct or conduit, pull them into the conduit by hand or power winch with the use of cable grips or pulling eyes. Pulling tension shall be governed by recommended standard procedures for straight pulls or bends. Use a lubricant compatible with the cable insulation.
810.03.03 Preassembled Cable Duct. Prior to installation, pay out the cable duct while moving the reel alongside and parallel to the trench. Do not pull cable duct off a reel located in a stationary position. Install the cable using a cable grip in a manner that will not stress or damage conductors, insulation, or sheath wall.
After backfilling, demonstrate that the conductors move freely within the duct by pulling the conductors out at least 2 ft. Pulling tensions shall conform to 810.03.02. Then pull the cable back to its original position. Completely seal cable duct ends using a waterproof removable sealing compound, a molded plastic device, or a rubber device.
810.03.04 Cable in Lighting StructuresBridges, culverts, catch basins, drop inlets, retaining walls, cribbing, manholes, end walls, buildings, sewers, service pipes, underdrains, foundation drains, steps, fences, and other features that may be encountered in the work and not otherwise classified.. Support the cable at each luminaire with a suitable clamp as an integral part of the luminaire or a device approved by the EngineerAny person designated by the Administrator or the procurement officer, acting directly or through his duly authorized representative, such representative acting within the scope of the particular duties assigned to him or of the authority given him. for the application.
810.03.05 Identification Tags. Furnish and install circuit wiring identification tags in all manholes, hand holes, junction boxes, and control cabinet and service pedestals. Use a nylon self-clinching type nonconductive band with an adequate sized tab for labeling. Mark each band using 1/4 in. minimum lettering dies, engraving device, or other approved permanent marking process. Indicate the circuit number, the terminal block position for loop detector cables, and the traffic signal phase for all other signal cables.
810.03.06 Loop Detector Wire and Loop Detector Lead-in. Prior to the installation of loop wires, the saw cut area shall be dry and free of saw cut debris. Twist the loop detector wire five turns per foot from the loop itself to the terminal point. Use a blunt instrument to seat the loop detector wire at the bottom of the saw cut. Splice the loop detector wire to the loop detector lead-in as specified.
810.03.07 Grounding Wire. Section 804.
810.03.08 Connector Kits. Furnish and install connector kits as required for the types of cables specified in the Contract DocumentsThe written agreement executed between an Administration and the successful bidder, covering the performance of the work and furnishing of labor, equipment and materials, by which the Contractor is bound to perform the work and furnish the labor, equipment and materials, and by which the Administration is obligated to compensate him therefore at the mutually established and accepted rate or price. The Contract Documents shall include the Invitation for Bids, Notice to Contractors, Instructions to Bidders, Proposal, Contract Forms and Bonds, General Provisions, Specifications, Supplemental Specifications, all Special Provisions, all Technical Provisions, all Plans and Notices to Proceed, also any written Change Orders and Supplemental Agreements that are required to complete the construction of the work in an acceptable manner, including authorized extension thereof and in conformance with the manufacturer’s recommendations.
810.03.09 Micro-Loop Probes. Furnish and install Micro-loop probe sets as specified. Terminate all leads in the controller cabinet.
810.04 MEASUREMENT AND PAYMENT.
The payment will be full compensation for all overhead communication cable attachments, trench excavation, backfill, and for all material, labor, equipment, tools, and incidentals necessary to complete the work.
810.04.01  Electrical Cable, Cable Ducts, Loop Detector Wire, Loop Detector Lead-in Cable, Grounding Wire, and Communication Cable will be measured and paid for at the Contract unit price per linear foot for the type and sizes specified.
810.04.02  Connector Kits will be measured and paid for at the Contract unit price per each type.
810.04.03  Micro-Loop Probe Sets will be measured and paid for at the Contract unit price per each set. The payment will be full compensation for all sealant, PVC conduit, hole drilling, installation of lead-in cable, and for all material, labor, equipment, tools, and incidentals necessary to complete the work.
Saw cuts for loop detector wire and micro-loop probe sets will be measured and paid for as specified in 815.04.