Generator neutral-ground bonding

[rohrmann]

Actually, there is already a difference of potential between the energized line and the helicopter. The electric field can cause bad burns, and that is why the lineman wears a Faraday suit to protect against the electric field. The bond is made with a jumper between the helicopter and the line so the lineman isn't the jumper when he makes contact. Watch this video and see the arc made when he makes the connection and also when he disconnects the wand.

https://www.youtube.com/watch?v=DPNK7bc2qvM