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Thread: Ground resistance

  1. #1
    Homeowner Thatguy's Avatar
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    Default Ground resistance

    Stick DVM probes into ground.
    Put on amps scale.
    Measure
    http://en.wikipedia.org/wiki/Telluric_current
    Switch to volts, measure voltage.
    Divide V by I to get R.
    Done.
    Last edited by Thatguy; 12-19-2008 at 05:08 PM.

  2. #2
    Electrical Contractor/Instructor jwelectric's Avatar
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    Default

    Quote Originally Posted by Thatguy View Post
    Stick DVM probes into ground.
    Put on amps scale.
    Measure
    http://en.wikipedia.org/wiki/Telluric_current
    Switch to volts, measure voltage.
    Divide V by I to get R.
    Done.
    Don't take to heart eveything you read on Wiki as a lot of it is nothing more than opinion.

    What this article doesn't explain about the resistance of grounding far out weighs any information given

  3. #3
    Homeowner Thatguy's Avatar
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    Default

    Quote Originally Posted by jwelectric View Post
    Don't take to heart eveything you read on Wiki as a lot of it is nothing more than opinion.

    What this article doesn't explain about the resistance of grounding far out weighs any information given
    Yeah, it seems like with all the currents flowing in the ground, harmonics of 60 Hz and such, you need to find a quiet frequency to measure the resistance.
    Kind of like the AM radio band, looking for a place where there is no station.

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