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Telegrapher
Re: Cold water pipe ground
djohns wrote:

If the power is off ( main breaker or fuses ) , there will be no current flow . Lifting the ground connection will be OK .

Thank you. That simplifies the process considerably.

Ernie_Fergler
Re: Cold water pipe ground
djohns wrote:

If the power is off ( main breaker or fuses ) , there will be no current flow . Lifting the ground connection will be OK .

But then you could be working in the dark.
Unless you drag power from a neighbor, that is.

djohns
Re: Cold water pipe ground

Turn the power OFF and do the work , or run a new ground and leave the power ON . Ernie , is there another option that I'm missing ? :confused:

Dave357
Re: Cold water pipe ground

Around here (Chicago area), inspectors have been requiring both a ground rod and cold water ground lately. There should also be a jumper installed across the water meter. (Meters are generally indoors here, rather than in a meter vault outside.)

Telegrapher
Re: Cold water pipe ground
Dave357 wrote:

Around here (Chicago area), inspectors have been requiring both a ground rod and cold water ground lately. There should also be a jumper installed across the water meter. (Meters are generally indoors here, rather than in a meter vault outside.)

I'm near Chicago and my water meter has a jumper installed. However, the cold water pipe is my only ground. It's a 50-year old house.

Is there a way to ground the electrical service from outside at the meter without using the connection on the service panel inside? It would be nice if I didn't have to run conduit through the building.

Ernie_Fergler
Re: Cold water pipe ground
Dave357 wrote:

Around here (Chicago area), inspectors have been requiring both a ground rod and cold water ground lately. There should also be a jumper installed across the water meter. (Meters are generally indoors here, rather than in a meter vault outside.)

Central Penna inspectors require both grounding methods as well.

Ernie_Fergler
Re: Cold water pipe ground
djohns wrote:

Turn the power OFF and do the work , or run a new ground and leave the power ON . Ernie , is there another option that I'm missing ? :confused:

None that I can think of.
I would go with turning the power off do the work.

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