The other day I saw an Edison employee high up in one of the steel towers washing off insulators with a hose. There's a 1" Galvanized water line that runs up the tower. He had his pump truck down below, and a short length of hose and nozzle up above.
These transmission lines are up in the hundreds of thousands of volts, and he's perched right on the grounded tower!
What enables him to do this without becoming an instant french fry?
