Greg
this particular mobile home has Masonite siding and no tiedowns, eliminating the faraday cage effect. service is(was) on a pole about 60 feet from the house, no visible ground rod, only a 3 conductor cable between main and loadcenter in house.
Marc, megger test after repair and subsequent failure showed a failed neutural in the ground between main and loadcenter. This would have been replaced if I had been allowed to fix it the first time.
