Effective with the December 2018 Letting 468 2019 Standard Spec ifications Section 651 General Requirements for Electrical Work
651.1 Description
1.This section describes general personnel qualifications, mater ials, construction methods, and testing requirements used to perform ele ctrical work required in the co ntract under 652 through 678.
651.2 Materials
1.Furnish materials conforming to the WSEC. The department is no t a municipal electric department under the provisions of the SPS 316 component of the WSEC.
2.The department specifies selected materials and manufactured p roducts for electrical work on the department's QPL.
3.Within 10 business days after not ice of award of the contract, furnish a materials list and shop drawings to the engineer. Include bid items, names and addresse s of manufacturers, catalog cut sheets with catalog numbers, and manufacturer's specifications in the materials list. Do not deliver materials or begin the work wit hout the engineer's written approval. The engineer may reject all or part of the materials list. Resubmit a lternatives for rejected mater ials within 15 business days of receipt of the engineer's written rejection . Do not substitute or change materials without the engineer’s written approval.
4.Provide UL or NRTL listed electrical materials or obtain the engineer's approval for materials that do not have a UL or NRTL standard.
5.Furnish samples of materials proposing to use for testing at t he engineer's reques t. The department will compensate the contractor if material is destroyed.
6.Return materials loaned from the region electrical units stock to that region electrical unit under the following terms: - Ensure that return materials ar e new and in original packagin g. - Return materials to the electr ical unit within 6 months of the date that they w ere picked up. - Region electrical personnel w ill not release loaned materials for contractor pick up until the region traffic engineer has a copy of the contractor's order forms for exact r eplacement materials. - Ensure that contractor-ordered replacement materials conform to the latest specific ations and drawings used for new state replacement orders. - The department will not accept monetary reimbursement.
651.3 Construction
651.3.1 General
1.Perform electrical work acco rding to WSEC and the WMUTCD.
2.Excavate as required to perfo rm the work. If the contractor encounters rock, stones, boulders, debris, or other material during excavation, remove and dispose of that material. Place trench backfill in 12- inch or shallower thoroughly-compact layers. Dispose of excess material as specified for disposing of surplus unsuitable material in 205.3.12 . Restore areas damaged or disturbed by the contractor's operations.
3.Before assembly, apply anti-seize compound to the threads and mating surfaces of threaded connections exposed to the weathe r. Do not use spray-on products. Do not apply anti-seize compound to the following: - Electrical Connections. - Anchor rods and anchor assemb lies associated with type 9, 10, 12, & 13 poles under 657, high mast light poles under 660, and camera poles under 677. - Friction connections using ASTM F3125 high-strength A325 steel bolts.
4.Unless the contract specifies o r engineer directs otherwise, t ouch up damage to painted equipment with 2 coats of synthetic resin enamel or with 2 coats of engin eer-approved zinc- rich paint. Repair damage to galvanized coatings wit h 2 coats of zinc dust/zinc ox ide paint conforming to 614.2 . These requirements apply to both contra ctor-furnished and state-furni shed equipment.
5.Exothermically weld electrical connections between grounding e lectrode conductors and grounding electrodes.
6.Each day before electrical cre ws leave a signalized intersecti on open to public traffic do the following: - Remove unused signal heads or cover them from traffic's view. - Energize and turn on availabl e intersection lighting if signalization is not operational unless the engineer approves otherwise. Effective with the December 2018 Letting 469 2019 Standard Spec ifications (7) Provide as-built drawings detailing the final placement of con duit, cabling, equipment, and geometric modifications under the contract. Provide a PDF copy conforming to CMM 1-65.14 . The engineer will reject as-builts with incomplet e or incorrect content or not co nforming to CMM standards.
651.3.2 Personnel Qualifications
1.Perform electrical work using a journey worker electrician or an electrical apprentice under the onsite supervision of a journey worker el ectrician. Before performing electrical work, provide the documentation specified in 651.3.2(3) to the engineer proving that the el ectricians performing the w ork have attained status as journey worker and apprentice electrici ans.
2.The department defines electrical work as electrical and relat ed construction required under the contract, performed as specified in the standard s pecifications , contract special provisions, standard detail drawings, and plan details applicable to electrical cons truction.
3.Provide a completion certificate from a state apprenticeship p rogram or a card issued by the Wisconsin department of safety and professional services to pro ve electricians are qualified.
651.3.3 Testing
1.After installation and before final hookup, disconnect loads w hether buried or not, and test grounded conductors, equipment grounding conductors, ungrounded conducto rs, and shielding contained in the cable with a megger. Submit the megger test results to the engineer. Ensure that the megger reads greater than 500 mega ohms during each of the following tests: - To ground. - Between each conductor. - Between each shield.
2.Furnish equipment necessary to te st the completed electrical i nstallation. Test and demonstrate to the engineer's satisfaction that the following conditions exist: 1. The circuits are properly connected, continuous, and free f rom short circuits and unspecified grounds. 2. The connection conforms to t he specified wiring layout, or the manufacturer's wir ing layout or both. 3. Each circuit operates as designed.
3.Notify the engineer and request a signal inspection at least 5 business days before the date of the requested inspection. In the ev ent of deficiencies, request a r einspection when the work is corrected. The engineer will not authorize turn -on until the contractor corrects deficiencies.
4.Operate the completed traffic signal installation for 72 hours consecutively, using the specified signal sequence and all special function s, such as preemption, as the plans show, or as the engineer approves.
5.The traffic signal installati on is not complete until the elec trical work is complete and electrical systems work properly.
6.Operate the completed lighting installation for 20 consecutive nights without failure. Each component that fails shall be repaired or r eplaced and that component sha ll again be subject to the twenty-night proper working order test.
7.The lighting system is not complete until electrical work is complete and inspected by the engineer, and electrical systems work properly.
651.4 (Vacant)
651.5 Payment
1.The department will pay for the wo rk specified in 651 separate ly under the various traffic signal, lighting, and ITS contract bid items. Effective with the December 2018 Letting 470 2019 Standard Spec ifications Section 652 Electrical Conduit
652.1 Description
1.This section describes providing rigid metallic or rigid nonme tallic conduit for traffic signals, lighting, and other electrical work, and rigid nonmetallic conduit for tr affic signal detectors.
652.2 Materials
652.2.1 General
1.Furnish electrical conduit and fittings with a UL or NRTL labe l on each piece installed.
652.2.2 Rigid Metallic Conduit
1.Furnish conduit and fittings con forming to ANSI C 80.1 for rigid metallic conduit.
652.2.3 Rigid Nonmetallic Conduit
1.Furnish PVC electrical conduit conforming to UL 651. Use sched ule 40 heavy wall type for enclosed locations. Use schedule 80 ext ra-heavy wall type for locations exposed to the elements.
652.2.4 Reinforced Therm osetting Resin Conduit
1.Furnish reinforced thermosetti ng resin conduit (RTRC) electric al conduit marked type AG conforming to UL 2515. Ensure that wall th ickness, coupling type or method , fittings, and hanger system conform to manufacturer recommendations for installation on the outside of structures.
652.2.5 Loop Detector Conduit
1.Furnish one-inch schedule 40 PVC electrical conduit conforming to 652.2.3 . Use PVC fittings and attachments designed specifica lly for the conduit furnished to join and terminate PVC conduit. Use engineer-approved PVC terminal adaptor fittings to connect cast iron T-condulets to PVC conduit.
2.Furnish cast iron T-condulets made by a department-approved ma nufacturer. Use steel, domed-type, wedge-nut style covers with neoprene gaskets on cast iron condu lets.
652.3 Construction 652.3.1 Installation of Conduit
652.3.1 1 General
1.Under the Conduit Special bid item, the contractor may use eit her rigid metallic or rigid nonmetallic conduit.
2.Use conduit of the nominal insid e diameter the plans show. Make each run of condui t the distance the plans show or as the engineer directs. Inst all each run of cond uit between adjacent access points using one size for its entire length. A run is the conduit from pull box to pull box, junction box to junction box, or pull box to j unction box. If the engineer appr oves, the contractor may substitute a larger size of conduit than the contract shows for that run. Delete 652.3.1.1(3), the department no longer allows drilled and open drain hole conduit installations.
3.Install tracer wire in each conduit run that will receive futu re conductors as the conduit is laid. Unless the contract specifies wire or cable, install a 12 AWG. XLP insulated, stranded, copper, 600-volt AC, wire. Provide wire 4 feet longer than the conduit run and doubl e it back at least 2 feet at each raceway access point. Anchor the tracer wire at each access point.
4.Ream and thread the ends of rigid metallic conduit and use WSE C-approved bushings. If not installing wire or cable, install engineer- approved threaded caps with ant i-seize compound applied to the threads.
5.Cap or plug rigid nonmetallic conduit immediately after instal lation, unless the conduit terminates in a pull box, and keep capped or plugged until installing the wire or cable. Install end bells on rigid nonmetallic conduit raceway access points before installing wir e or cable. Ream non-metallic conduits to eliminate internal sharp edges before installing end bells. Use only UL or NRTL listed adapter fittings to connect rigid nonme tallic conduit to rigid metallic conduit.
652.3.1 2 Installing Underground
1.Unless the plans specify otherwise, install conduit in trenche s excavated with vertical sides and of a depth and width sufficient to acc ommodate the outside diameter of the conduit couplings. Lay the conduit at the depth below grade t he plans show. Backfill the trench with select material passing a one-inch sieve.
2.Excavate trenches true to line and grade to provide the conduit uniform bearing throughout its length. Do not backfill the trench befo re inspecting the conduit. Caref ully tamp the backfill in place as specified for placing backfill in layers in 651.3 . Place at least 0.7 cubic feet of size No. 2 coarse aggregate, as specified in 501.2.5.4.5 , directly under each drainage hole.
Referenced in this section
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Source: Wisconsin Standard Specifications for Highway and Structure Construction, 2019 Edition. Pages 477–478 of 601. View official source ↗