Testing GEC ohms reisistance

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nizak

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Do most here find that the AHJ test the level of resistance on the GEC?

I only know of one inspector( out of at least 10 I deal with) that has ever tested it.

I guess the better question might be. How many contractors here test it at installation?
 
nizak said:
Do most here find that the AHJ test the level of resistance on the GEC?

I only know of one inspector( out of at least 10 I deal with) that has ever tested it.

I guess the better question might be. How many contractors here test it at installation?
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How does he test it? A circuit analyzer?

I've never tested one. Well other than that one time back in the last Century.
 
Have never seen AHJ ask for a test here, they do want 2 ground rods or CEE (concrete encased electrode, aka ufer)

Only place have ever tested myself are airports, missile sites, military bases, and own home.
 
nizak said:
Fluke clamp on digital meter.

He told me it cost the township $2800.00!
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Be happy they chose the clamp on, very easy to get passing grades with it.

The NEC only requires testing if there is only one rod, drive two rods and no testing is required or described.
 
nizak said:
Do most here find that the AHJ test the level of resistance on the GEC?

I only know of one inspector( out of at least 10 I deal with) that has ever tested it.

I guess the better question might be. How many contractors here test it at installation?
Click to expand...

Just a quibble, but the question is not the resistance of the GEC itself, but rather the overall resistance to earth ground from the panel end of the GEC, which is pretty much guaranteed to be dominated by the contact resistance of the ground electrode itself.
The latter is what the clamp on ground tester purports to measure, but it can only do that if one or more other reasonably good ground electrodes are available.
 
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