Lightning rods protect buildings from lightning, and are installed on rooftops and house roofs to allow lightning that strikes them to escape to the ground. Lightning arresters are attached to poles, distribution boards, telephone lines, antennas, etc, to protect electrical products from lightning. (Photo 1) Lightning arresters are installed on poles, distribution boards, telephone lines, antennas, etc. (Photos 2 and 3) to protect electrical products from lightning. (Photo 4 : Our Home Arrester series)