I recently wired a house that has a ufer ground. It has 1 piece of rebar sticking out of the foundation by the electrical panel and another sticking up about 10 feet away. That is all the inspectors require here. If they don't see it before the concrete is poured the two ends sticking up is good enough so they could do a continuity test between the two and verify that its tied into the grid that way. Anyway after I wired the house the homeowner showed up and claimed he did a ohms test on the ufer ground and it came back at 800 ohms. I'm not sure what he did to test it but I wouldn't think that could be correct.
I have access to a Fluke 1520 megohmmeter I'm just not sure how to go about testing it myself.
I don't see anything in the code that says that the ufer ground has to be under a certain amount of ohms. Is this true? I only see where it talks about resistance of rod, pipe, and plate electrodes in 250.56 (2008 NEC)
I have access to a Fluke 1520 megohmmeter I'm just not sure how to go about testing it myself.
I don't see anything in the code that says that the ufer ground has to be under a certain amount of ohms. Is this true? I only see where it talks about resistance of rod, pipe, and plate electrodes in 250.56 (2008 NEC)
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