The Manse (or Parsonage) at our church was built in 1973-74 and was not properly grounded. We are in the process of correcting this.
The Electric Code now requires (I am told) that all wiring entering a residence be connected to the same ground [usually a copper plated 8 ft steel rod driven entirely into the earth at the meter base. The electric service, telephone service, cable TV, satellite connection, etc, must all be grounded there. Am I correct?