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  • Users: brandon05
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  1. brandon05

    Multiple Circuit in Single Duct Bank Conduit

    Without using expensive software to determine the heating effect on each individual cable is there method to determine cable ampacity for multiple circuits in a single Duct Bank Conduit. I have 11 motors, 3 lighting loads, and 2 receptacles that are 750 ft from the nearest 480 Vac source. It...
  2. brandon05

    Compensate for Load Voltage Drop with a Transformer

    I have a situation where I have a 277 Vac, 20 A load about 750 ft from the source. Due to the voltage drop I would like to us a 480/277 transformer at the source and bump the secondary voltage to approximately 285 Vac to compensate for the voltage drop. Two problems I have is; that I will need...

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