Grounding the service with well water piping

[jmak]

I have a question regarding grounding 2 200amp service panels. Since the main water supply to the home is plastic poly piping from the well, is only grounding the service panels to 1 ground rod acceptable or does there need to be 2 ground rods installed?

Thank you for your responces,

Jim

 

[augie47]

Grounding should be to ALL electrodes available per 250.50.
If a ground rod is the only electrode, then per 250.56 it must be supplemented if the resistance is 25 ohms or less.
(In some areas the AHJ requires (2) due to consistant readings of < 25 ohms)

 

[electricmanscott]

I'd ditch the rods and use the well casing as an electrode.

 

[infinity]

Grounding should be to ALL electrodes available per 250.50.
If a ground rod is the only electrode, then per 250.56 it must be supplemented if the resistance is 25 ohms or less.
(In some areas the AHJ requires (2) due to consistant readings of < 25 ohms)

Didn't you mean more than 25 ohms?

 

[SEO]

I'd ditch the rods and use the well casing as an electrode.

Even if the well casing is in the middle of the yard 100' from the house?

 

[augie47]

Didn't you mean more than 25 ohms?

yeah..I'm slowly loosing my mind....bear with me and interpret, please

 

[electricmanscott]

Even if the well casing is in the middle of the yard 100' from the house?

Maybe. I'd take 100' of burried #4 connected to a well casing over two rods if it were up to me.

 

[stickboy1375]

Maybe. I'd take 100' of burried #4 connected to a well casing over two rods if it were up to me.

Will either do anything?

 

[Smart $]

Will either do anything?

Under nominal conditions, no... however the GES purpose is to help maintain a voltage reference to earth and to conduct to earth ground under anomalous conditions, such as surges imposed by lightning.

 

[LarryFine]

Maybe. I'd take 100' of burried #4 connected to a well casing over two rods if it were up to me.

Not if I had to do the digging. Where's Al?

 

[Pierre C Belarge]

Not if I had to do the digging. Where's Al?

It may not be Al that has the digging magic. It may be his shovel, try getting it away from him. If he fights you for the shovel, you know the magic is in the shovel. :grin: