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The test equipment necessary to determine if the resistance to ground is acceptably low (<25 ohms I think) is quite expensive. Using two grounds rods is deemed an acceptable alternative.

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Your post is a little misleading the way in which it is worded.md2lgyk said:

The test equipment necessary to determine if the resistance to ground is acceptably low (<25 ohms I think) is quite expensive. Using two grounds rods is deemed an acceptable alternative.

There is a requirement for a second ground rod if you are not able to prove the resistance of the single rod is less than 25 ohms.

No intent to be misleading. You are quite correct. But I don't think it's the homeowner's responsibilty to prove the resistance of one rod is acceptable. If the inspector doesn't have access to the proper equipment, they simply require two rods or just let it go. I don't know which applies in my case. I only know that I have just one rod.Your post is a little misleading the way in which it is worded.

There is a requirement for a second ground rod if you are not able to prove the resistance of the single rod is less than 25 ohms.

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How far from the foundation should the grounding rods be?

It is the homeowner or contractor responsibilty to show that a the resistance with 1 ground rod is 25 ohm or less and a 2nd ground rod is not needed.No intent to be misleading. You are quite correct. But I don't think it's the homeowner's responsibilty to prove the resistance of one rod is acceptable. If the inspector doesn't have access to the proper equipment, they simply require two rods or just let it go. I don't know which applies in my case. I only know that I have just one rod.

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Bang them in 2' away from house, where they used fill.Look for other utilities,though.How far from the foundation should the grounding rods be?

And it says this where? Not ragging on you, just curious. I would argue that as a homeowner, it's not my responsibility to prove anything - it's the inspector's to verify things are done correctly whether they be electrical, plumbing, or anything else. How rigorous he wants to be is up to him.It is the homeowner or contractor responsibilty to show that a the resistance with 1 ground rod is 25 ohm or less and a 2nd ground rod is not needed.

Not to split hairs, but I must disagree. It is the inspector's job toNo, whom every does the work would need to prove they did it to code.

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