3 ph delta resistive elements balanced/unbalanced amperage question?

Discussion in 'General Electronics Chat' started by milton, Nov 2, 2009.

  1. milton

    Thread Starter New Member

    Nov 2, 2009
    Hello all,

    I have a bit of problem, I am trying to understand what effects different loads (element's resistance) have on the amperages of the lines.

    for example
    230v 3ph

    A-B 2 ohms (230 v read between A-B)
    B-C 2 ohms (230 v read between B-C)
    C-D 2 ohms (230 v read between C-D)

    estimating I can read about 150 amps on any leg A,B or C

    my amp draw on legs A, B and C should all be the same.
    but what happens when the resistance doubles? or triples?
    And which of the 3 legs will be affected? I mean if A-B doubles which leg will be affected? or vice versa with any other combinations.

    General answers would be good but a formula and explaination would be better.