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Orange County West Campus Office Building -HVAC <br />PDC Project 23020 Panelboards 26 24 16 - 6 <br />G.For Services and feeders 1000 amperes and larger,and any installation utilizing selective <br />coordination,the following test should be performed on the circuit breakers.Testing shall be <br />performed by a qualified manufacturer's factory technician at the job site.All readings shall be <br />tabulated. <br />1.Phase Tripping tolerance (within 20%of UL requirements). <br />2.Trip time (per phase)in seconds. <br />3.Instantaneous trip (amps)per phase. <br />4.Insulation resistance (in megohms)at 1000-volts DC (phase to phase,and line to load). <br />3.04 ADJUSTING <br />A.Adjust tightness of mechanical and electrical connections to manufacturer's recommended torque <br />settings. <br />B.Adjust alignment of panelboard fronts. <br />C.Load Balancing: For each panelboard,rearrange circuits such that the difference between each <br />measured steady state phase load does not exceed 20 percent and adjust circuit directories <br />accordingly. Maintain proper phasing for multi-wire branch circuits. <br />3.05 CLEANING <br />A.Clean dirt and debris from panelboard enclosures and components according to manufacturer's <br />instructions. <br />B.Repair scratched or marred exterior surfaces to match original factory finish. <br />END OF SECTION 26 24 16 <br />Docusign Envelope ID: 8DED1454-68D2-4E36-9FC6-E56FF2124E5D