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-   -   How to compute size of main feeder line & main breaker? (https://www.askmehelpdesk.com/showthread.php?t=672996)

  • Jun 19, 2012, 11:58 PM
    adlkic
    How to compute size of main feeder line & main breaker?
    Panel board 1(single phase)
    - total wattage=17,000w @ 230V
    - has 2.5Hp ACU (largest motor)
    Please. Solve for.:
    1. size of main feeder line
    2. main breaker


    Panel board 2(3phase)
    - total wattage=10000w @ 230V
    - has 2.5Hp ACU (largest motor)
    Please. Solve for.:
    1. size of main feeder line
    2. main breaker



    Combined panel board1 & 2 (single phase & 3phase)
    1. size of main feeder line
    2. main breaker
  • Jun 20, 2012, 02:33 AM
    tkrussell
    Can you explain your situation, such as, why do you plan to combine a 1 & 3 phase panel?

    This is not recommended, unless this is a test question.

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