Satellite dishes are essentially antennas placed on the outside of homes. That means it is exposed to elements like rain, snow, winds, and LIGHTNING. If you didn’t notice, the last one there is kind of important when it comes to electric hazards. While grounding wire will not bring your satellite dish back to life, it can help prevent any more potential damage to your home. Plus, the large majority of residential areas require grounding for satellite dishes for insurance purposes.