Posted by gbs on April 27, 2012 at 21:23:28 from (71.51.249.94):
In Reply to: Electrical question posted by Stephen Newell on April 27, 2012 at 19:35:30:
we use 2 different types a vibra-ground tester and a megger to test resistance most utility companies have them ,who ever said there's no need to drive over 2 rods don't know what they are talking about,it depends on the soil types, i've installed a lot of different grounding configurations through the years, in areas were rods can be stacked and driven most of the time you can achieve the reading by driving them deep and getting enough soil contact or hitting soil that will provide a ground, we have used a 90# jack hammer to drive them
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