I am in an argument with an Engineer who is stating that in a multiple grounding electrode (cold water pipe and ground rod) where the ground rod does not have a reading of less than 25ohms that an additional (third) grounding electrode is required. The ground system read 2.8 ohms at the box but the ground rod was 280ohms.
Is there any formal documentation out there that describes the intent of the Code so I can get his Engineer off my back.
Allan
Is there any formal documentation out there that describes the intent of the Code so I can get his Engineer off my back.
Allan
