Insulated electric wire, method for producing same, insulated electric wire with terminal, and method for producing same

The invention provides an insulated wire which can withstand instantly applied stress and is not easy to break. Disclosed is an insulated wire (1) having a conductor (2) formed by twisting a plurality of bare wires, and a coating layer (3) that coats the conductor (2). In the insulated electric wire (1), a bare wire is composed of a certain copper alloy, a conductor (2) is composed of a center bare wire (2a) and a plurality of concentric bare wires (2b) concentrically arranged around the center bare wire (2a), the amount of oil adhering to the center bare wire (2a) is 6 [mu] g/g or less relative to the mass of the center bare wire (2a), the twisting pitch of the conductor (2) is 5-10 mm, the cross-sectional area of the conductor (2) is 0.15 mm2 or less, and a coating layer (3) is composed of polyvinyl chloride resin. And the thickness of the coating layer (3) is 0.15 to 0.25 mm. 本发明提供一种也能够耐受瞬间施加的应力的、不易发生断裂的绝缘电线。公开了一种具有多根裸线绞合而成的导体(2)和包覆该导体(2)的包覆层(3)的绝缘电线(1)。在绝缘电线(1)中，裸线由一定的铜合金构成，导体(2)由中心裸线(2a)和在其周围同心状地配置的多根同心裸