Patent ID: 8769813

Claim:
A method of manufacturing a wiring material having a connecting terminal electrically connected to a circular shaped single line conductor, comprising the steps of: bending a single line conductor to have a circular shape; extending both ends of the single line conductor that is bent in parallel; forming a tube-shaped section having a circular cross section at the connecting terminal for accommodating the both ends of the single line conductor; inserting the both ends of the single line conductor into the tube-shaped section; and conducting a resistance welding by energizing welding electrodes from the outer periphery of the tube-shaped section, in a state where a portion of the tube-shaped section between the ends of the single line conductor is pushed by the welding electrode into a space formed between the ends of the single line conductor and an inner periphery surface of the tube-shaped section contacts with the both ends of the single line conductor to electrically connect the connecting terminal with the both ends of the single line conductor.