The invention relates to a lightning current conducting device for electrically connecting a collecting device to an earthing installation in the outer lightning arrester. The electrical conductor is surrounded by an insulating jacket which also comprises a coated dielectric. The insulating jacket, in turn, is surrounded by a conductive or semi-conductive sheathing. A field control arrangement for preventing sliding discharges and for increasing the impulse withstand voltage is provided in the connection section between the electrical conductor and the collecting device. The jacket can present different levels of conductivity in different sections over the length thereof.