Disclosed methods include connecting at least two conductors by establishing at least one electric current conducting circuit by forming a conductor into at least one loop so that at least one pair of spaced apart portions of the conductor, separated by an intervening or intermediate portion of the conductor, are positioned adjacent to one another; relatively positioning a preselected segment of at least one other conductor and the adjacent portions of the first conductor so that the preselected segment is located between the pair of spaced apart portions; and causing electric current to flow through the at least one loop so that an arc between the pair of spaced apart portions is produced and at least two conductors are welded together by the arc. Also disclosed are methods of forming two spaced apart loops in a first conductor, and connecting the first conductor loop portions to second and third conductors respectively by an arc between pairs of portions of each loop. Also disclosed is apparatus having a conducting loop fixture and means for causing current to flow through the loop fixture so that an arc is struck between adjacent portions of the fixture to connect at least two conductors.