Here in NJ the inspectors are not only asking for 2 ground rods but the state is requireing a ground rod in the footing of new buildings. (UFER ground) This new ground rod is inspected by the building inspector on the footing inspection. There needs to be a rod in the footing 1/2" or larger and 20 feet or longer, with an approved ground lug and # 4 cu wire long enough to reach the service panel or cold water pipe.
Harold
