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Thread: More fallacious grounding

  1. #81
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    Quote Originally Posted by mivey View Post
    Dirt is matter and has electrical properties. Our currents travel in a limited amount of the earth's total matter.
    Why though? Does it not take all paths? I've heard people measuring 50 cycle power here in 60 over seas in earth driven electrodes.

  2. #82
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    Quote Originally Posted by mivey View Post
    #1:
    At the sub the N conductor is at the neutral point. A A-N fault drags A to the neutral point and the B-N and C-N arrestors see P/sqrt(3) volts (line-neutral).

    Far away the N conductor has a large impedance that allows it to float from the neutral point. An A-N fault drags N to A and the arrestors see B-A and C-A voltage (line-line).

    #2:
    The earth path has impedance.
    True.

    Though much less so for an MGN, right?

  3. #83
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    I'll find you a better vid, but notice the wire from the 4th MV bushing going down into conduit which disappears into the soil:


    https://youtu.be/l53NrBvlorQ?t=180
    Last edited by mbrooke; Yesterday at 07:07 PM.

  4. #84
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    Quote Originally Posted by romex jockey View Post
    so....i just gotta ask...am I looking at one huge poco MBJ?~RJ~
    Notice the wire from the bushing, into the CT, into some flexible conduit and down into the rock- same for the primary:


    https://youtu.be/bV2pMeKdkQM?t=142
    Last edited by mbrooke; Yesterday at 07:09 PM.

  5. #85
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    Quote Originally Posted by mbrooke View Post
    Probably not, but it would be low.


    Is it exceptionally high reactance that does it?
    They are not perfect conductors. Internal reactance influences the path.
    BB+/BB=?

  6. #86
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    Quote Originally Posted by mivey View Post
    They are not perfect conductors. Internal reactance influences the path.
    By how much though?

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