Wis. Admin. Code Public Service Commission PSC 185.795
Jumpering meter settings. Under certain abnormal conditions, a dangerous voltage may appear across the meter setting when the water line is electrically opened as by removal of the meter. Before a water meter is removed (or the interior piping leading to the service otherwise opened), an appropriate electrical jumper shall be connected across the meter setting or proposed opening in the piping to maintain electrical continuity. If the water supply piping is used as a ground for the building's electrical service, the electrical jumper shall not be removed until a meter is again set or the piping closed. The utility shall inform the customer that the electrical jumper shall not be removed until a meter is again set or the piping closed.
Wis. Admin. Code Public Service Commission PSC 185.795