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  1. lakesailer

    Ampacity of single conductor cable in cable tray

    In our application we are running 3 parallel runs of (phase A,B,C, and Gnd) for the power to a 700hp VFD. Am I correct that if we space the groups of 4 cables each, apart from each other by the 2.15 times the cable O.D., that we can use NEC table 310.20 to determine the ampacity for the phase...
  2. lakesailer

    Cable tray fill calculation

    In our application we are running 3 parallel runs of (phase A,B,C, and Gnd) for the power to a 700hp VFD. Am I correct that if we space the groups of 4 cables each, apart from each other by the 2.15 times the cable O.D., that we can use NEC table 310.20 to determine the ampacity for the phase...
  3. lakesailer

    Cable tray fill calculation

    Being new to applications utilizing cable tray, could someone tell me if it's acceptable to install multi-conductor 600V tray cable and single conductor 600V tray rated cable in the same cable tray? If so, NEC doesn't appear to have any reference to calculating the allowable fill area for the...

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