PURPOSE: A lightning arrester ground clamp is provided to guide complete separation of a ground line from an arrester body unit in case of operation of a disconnection switch. CONSTITUTION: A wedge bolt(120) is engaged with a lower part of a connection terminal(110). A guide terminal(130) is extended from the connection terminal and is inserted into the wedge bolt. A body unit(140) forms an outer surface of a lightning arrester ground clamp. A metal sleeve penetrates one surface of the body unit and one surface of the wedge bolt, and is connected to the guide terminal. The metal sleeve electrically connects a conductor inside of the lead line inserted into and the wedge bolt.
