Ultrahigh-current lead manufacturing method and lead and cable manufactured by using same

The invention discloses an ultrahigh-current lead manufacturing method, which comprises the following steps of: pressing a conductor of a traditional lead into a conductor sheet which has an upper surface and a lower surface for transmitting electric charges; attaching an insulating material layer to one surface of the conductor sheet; coiling the conductor sheet attached with the insulating material layer into a spiral column or a square column or a column of other shape; and finally, coating an internal insulating layer, a shielding protective layer and an outer sheath outside the ultrahigh-current lead. By slightly changing the method, ultrahigh-current overhead leads and ultrahigh-current cables can be manufactured. The radical technology comprises that all metal materials of a lead core are changed into conductor surfaces capable of transmitting electrical energy together, so compared with the conventional production process, the utilization rate of the metal materials is improved, the production cost is