2024-575-E-AMS-Hamlett Associates-RFP5417 -Motor Pool, Maintenance Shop, OPT ATS & Generator Work

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OC Motor Pool and Maintenance Shop PDC Project 23017 Power Conductors and Cables 26 05 19 - 5 F.Secure and support conductors and cables in accordance with NFPA 70 using suitable supports and methods approved by the authority having jurisdiction. Provide independent support from building structure. Do not provide support from raceways,piping,ductwork,or other systems. G.Install conductors with a minimum of 12 inches of slack at each outlet. H.Neatly train conductors inside boxes,wireways,panelboards and other equipment enclosures. Condcutors shall not be laced or bundled to avoid overheating. I.Group or otherwise identify neutral/grounded conductors with associated ungrounded conductors inside enclosures in accordance with NFPA 70. J.Make wiring connections using specified wiring connectors. 1.Remove appropriate amount of conductor insulation for making connections without cutting, nicking or damaging conductors. 2.Do not remove conductor strands to facilitate insertion into connector. 3.Clean contact surfaces on conductors and connectors to suitable remove corrosion,oxides, and other contaminates.Do not use wire brush on plated connector surfaces. K.Insulate ends of spare conductors using vinyl insulating electrical tape. L.Unless specifically indicated to be excluded,provide final connections to all equipment and devices,including those furnished by others,as required for a complete operating system. 3.04 FIELD QUALITY CONTROL A.All tests shall be completely documented indicating time of day,date,temperature and all pertinent test information.All required documentation shall be submitted to the Engineer prior to,and as a prerequisite for,final acceptance of the project.All test results shall be included in the Owner's operation and maintenance manual. B.Inspect and test in accordance with NETA ATS,Section 7.3.2. 1.Perform each of the following visual and electrical tests: a.Compare cable data with drawings and specifications to ensure compliance with contract documents. b.Inspect exposed sections of conductor and cable for physical damage and correct connection according to the single-line diagram. c.Test bolted connections for high resistance using one of the following: 1)A low-resistance ohmmeter. 2)Calibrated torque wrench. d.Inspect compression-applied connectors for correct cable match and indentation. e.Inspect for correct identification. f.Inspect cable jacket and condition. g.Continuity test on each conductor and cable. h.Uniform resistance of parallel conductors. C.Insulation resistance test is required for all feeder conductors prior to energizing feeders,sub- feeders,or service entrance conductors. 1.All current carrying feeder phase conductors and neutrals shall be tested as installed,and before connections are made,for insulation resistance and accidental grounds. This shall be done with a 500 volt insulation resistance tester. In the procedures listed below shall be followed: a.Minimum readings shall be one million (1,000,000)or more ohms for #6 AWG wire and smaller,250,000 ohms or more for #4 AWG wire or larger,between conducts and between conductor and the grounding conductor. b.After all fixtures,devices and equipment are installed and all connections completed to each panel,the Contractor shall disconnect the neutral feeder conductor from the neutral bar and take a insulation resistance reading between the neutral bar and the grounded enclosure. If this reading is less than 250,000 ohms,the Contractor shall disconnect the branch circuit neutral wires from this neutral bar. He shall then test each one separately to the panel and until the low readings are found. The Contractor shall correct troubles, reconnect and retest until at 250,000 ohms from the neutral bar to the grounded panel Docusign Envelope ID: EF9C08D2-5B75-438B-8D6D-8473F81BD7C4