Common earth ground

To avoid interference and ground loops, one (1) common ground is installed near the Control Building. The ground consists of a 20-foot, 2-inch copper pipe buried in the ground which is connected at the Control Building in a box on the side of the building to a single conductor, 2/0 stranded insulated copper wire. Each building on the radius is connected to this same ground with an identical copper wire. All projects and power must be connected to this common grounding system, and no project is permitted to install a separate ground.