I would not have mine on the tower but for that I built 5 phase stators and at that point it was just two many conductors to run to the ground. Even hugh who desined this turbine, said this was one of its weaknesses. I don't worry about wetness but I have expereince with lightning. Besides, it is nice to have as much as posible where you can work on it with as little extra work as posible.
gww