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ORANGE COUNTY 260800-2 <br /> <br />Emergency Management Warehouse Building Dehumidification Testing and Placing in Service <br /> <br /> <br /> PART 3 - EXECUTION 1 <br /> 2 <br /> 3 <br />GENERAL 4 <br /> 5 <br />Check cable continuity and phase identification for each conductor used on the project. This includes service 6 <br />conductors, feeders, and branch circuit conductors. It is not required to document this test in the testing report 7 <br />required under this section. 8 <br /> 9 <br />Insulation testing: The insulation tests (megger tests) as specified in this Section are the minimum readings desired 10 <br />at an ambient temperature of 60o F and a low relative humidity. 11 <br /> 12 <br />Megger readings taken at other than ambient temperature of 60o F shall be corrected to 60o F. 13 <br /> 14 <br />When megger readings fall below the specified minimum values utilize recognized means to dry out the 15 <br />equipment. The method utilized by the Contractor must be in accordance with manufacturer's written 16 <br />instructions. 17 <br /> 18 <br />If drying is to be accomplished by applying an electric potential to a cable or piece of equipment, then, in no case 19 <br />(induced or direct) shall the voltage or current exceed the ampacity or the continuous rating of the equipment being 20 <br />dried. 21 <br /> 22 <br /> 23 <br />CABLE TESTS 24 <br /> 25 <br />General: Disconnect each end of all cables from their associated equipment prior to the test. 26 <br /> 27 <br />Cables  600 Volt: Inspect all cable connections for workmanship and conformance with standard practice. 28 <br /> 29 <br />Perform the following tests: 30 <br /> 31 <br />Test cable insulation using a megger. 32 <br /> 33 <br />Perform megger tests between phases and between each conductor and ground with the other 34 <br />conductors and interlocked armor (if part of cable assembly) grounded. 35 <br /> 36 <br />Test other conductors in the same manner. The minimum acceptable megger reading for cables 37 <br />shall be 1 megohm (M) for #6 AWG conductors and smaller and 250,000 ohms () for #4 AWG 38 <br />conductors and larger. 39 <br /> 40 <br />The Test Record Shall Include the Following: 41 <br /> 42 <br />Complete identification of the cable, including approximate length. 43 <br /> 44 <br />Megger reading data. 45 <br /> 46 <br /> 47 <br />OVERCURRENT DEVICES 48 <br /> 49 <br /> 50 <br />Operational Test Procedures for Circuit Breakers: Visually inspect and manually operate breakers through a 51 <br />minimum of three (3) open/close cycles. Check for correct alignment, freedom from binding and good contact. 52 <br />Check phase matching and phase rotation immediately prior to energizing of equipment. 53 <br /> 54 <br /> 55 <br />ROTATING EQUIPMENT 56 <br /> 57 <br />During installation, inspect all rotating equipment for damage, moisture, alignment, proper lubrication, oil leaks, phase 58 <br />identification and cleanliness. Check proper rotation. Check and record motor speed (speeds for multi-speed 59 <br />motors). 60 <br />61 <br />DocuSign Envelope ID: 7668B866-6C26-485C-9A45-DAAB5D4BD951