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  1. #1
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    Default Furnace grounded to water line

    I resisted the temptation to pull the cover - it's the kind of curiosity that leaves the cat staring at a handful of disconnected unidentified conductors - but I am wondering:

    Why - in modern construction with conduit providing the ground path, and in what otherwise appeared to be a reasonably competent furnace installation - might someone go to all this trouble to add an additional ground (I presume) of this sort?

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    Michael Thomas
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  2. #2
    A.D. Miller's Avatar
    A.D. Miller Guest

    Default Re: Furnace grounded to water line

    Quote Originally Posted by Michael Thomas View Post
    I resisted the temptation to pull the cover - it's the kind of curiosity that leaves the cat staring at a handful of disconnected unidentified conductors - but I am wondering:

    Why - in modern construction with conduit providing the ground path, and in what otherwise appeared to be a reasonably competent furnace installation - might someone go to all this trouble to add an additional ground (I presume) of this sort?
    MT: Looks like a wrong-minded belt-and-suspenders approach to grounding/bonding. But, it probably will not hurt anything.


  3. #3
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    Default Re: Furnace grounded to water line

    One thing that bothers me is the white wire - suppose that the jumper is actually to a grounded (neutral) conductor in the box, for example as some sort of Bozoide attempt to control galvanic corrosion...

    Michael Thomas
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  4. #4
    A.D. Miller's Avatar
    A.D. Miller Guest

    Default Re: Furnace grounded to water line

    Quote Originally Posted by Michael Thomas View Post
    One thing that bothers me is the white wire - suppose that the jumper is actually to a grounded (neutral) conductor in the box, for example as some sort of Bozoide attempt to control galvanic corrosion...
    MT: Could be, or maybe you've been watching too many sci-fi flicks.


  5. #5
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    Default Re: Furnace grounded to water line

    I'm guessing that they somehow discovered that the copper pipe, water pipe?, was not "bonded" so that was their feeble attempt to "bond" the interior metal water piping system to ground.

    Jerry Peck, Construction / Litigation Consultant
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  6. #6
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    Default Re: Furnace grounded to water line

    Quote Originally Posted by A.D. Miller View Post
    ...maybe you've been watching too many sci-fi flicks.
    The Attack of the Bozoids?

    "There is no exception to the rule that every rule has an exception." -James Thurber, writer and cartoonist (1894-1961)
    www.ArnoldHomeInspections.com

  7. #7
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    Default Re: Furnace grounded to water line

    .... maybe you've been watching too many sci-fi flicks.

    Say you will... that white wire still bothers me....

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    Last edited by Michael Thomas; 06-11-2009 at 10:34 AM.
    Michael Thomas
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