Gas line current stopper - black iron dielectric union for gas furnaces, water heaters, stoves, etc

Gas appliances almost always have current on the gas line. This electrical current doesn't belong there and can cause magnetic fields including high-frequency fields. This happens because of "ground loops" or "rings." Even worse, when wiring errors and bad wiring practices are present, this current can get very high and cause considerable magnetic fields.  This current can be measured with our Big Orange Clamp Meter, and we recommend that as an investment for people to help identify issues for themselves and their loved ones' homes and businesses.  However, even without measuring we recommend the installation of these dielectric unions for gas appliances since the problem is so incredibly common.