Abstract: A ground electrode includes a base plate having an upper and a lower side. The ground electrode includes a plurality of tubes each having a first and a second end. The first ends of the tubes are connected to the lower side of the base plate. The tubes are tilted so that the second ends converge in the circular base of a cone. A magnetic coupler is attached to the upper side of the base plate. The magnetic coupler includes a body plate electrically connected to the base plate. Two arm plates and a head plate are connected to the body plate. A permanent magnet is wrapped around a section of the head plate. The ground electrode includes a plurality of diffusers each circumferentially wrapping a section of a respective tube.