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When assembling a MCC (Motor Control Center) or any other switchgear, the bus bars have to be torqued. The torque specifications are laid out by the manufacturer of the equipment. To find what the specifications are for the specific equipment, you have to find the assembly manual that is shipped with the equipment. Where the bus has been torqued at the factory you will see black marks where the employee has checked each nut that they have done. This is done to verify that none have been missed.
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What is the torque for a 2500Amps electrical busbar?
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