Specifications - City of Montpelier, Vermont

Title:Montpelier District Heating16120 – Wires and CablesCity of Montpelier, VTIssue Date:September 28, 2012Page #:5 of 6members, and follow surface contours, where possible.G. Keep conductor splices to minimum.H. Install splice and tap connectors which possess equivalent or better mechanicalstrength and insulation rating than conductors being spliced.I. Use splice and tap connectors which are compatible with conductor material.J. Provide adequate length of conductors within electrical enclosures and train theconductors to terminal points with no excess. Bundle multiple conductors, withconductors larger than no 10 AWG cabled in individual circuits. Maketerminations so there is no bare conductor at the terminal.K. Tighten electrical connectors and terminals, including screws and bolts, inaccordance with manufacturer's published torque tightening values. Wheremanufacturer's torquing requirements are not indicated, tighten connectors andterminals to comply with tightening torques specified in UL 486A.L. All single phase branch circuits shall be wired with dedicated full sized neutralconductor. The use of shared neutrals is not allowed.3.3 FIELD QUALITY CONTROLA. The Electrical Contractor shall furnish all test equipment and labor necessary toperform insulation tests as specified herein.B. Test all wiring set under this Section using an approved type constant "megger".Leave name free from any grounds, crosses, shorts, etc., and leave all materialsand apparatus in first class working condition. All wires that are shorted orunintentionally grounded shall be replaced at no additional costs.C. The Contractor shall megger and record all 600 volt insulated conductors size #2AWG and larger using Contractor furnished 500 volt megger for one minute.Disconnect motors and transformers during tests. Make tests on circuits isolatedfrom source and load. Submit three (3) sets of cable test results to Engineer forreview.D. Make any additional tests required by the Owner, Engineer or any authoritieshaving jurisdiction.WIRES AND CABLES161205