Thread: 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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Originally Posted by Michael Thomas

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.

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...

Originally Posted by Michael Thomas

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.

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.

Originally Posted by A.D. Miller

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

The Attack of the Bozoids?

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

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