Obviously a connection problem, right! Compare these 2 components and analyze the differences before coming to any rushed decissions. While the source of the energy observed on this insulator appears to come from the top connection, the temperature decreases along the top line and also appears to decrease through the insulator. This equipment was shut down as per the thermographers analysis to further investigate the internal components related to this insulator, only to find the bottom connection severely burned and only milimeters from burning completely through, potentially causeing a catastrphic situation.