INSULATED WIRE, ELECTRICAL EQUIPMENT, AND METHOD OF PRODUCING INSULATED WIRE

An insulated wire having a conductor (1), a foamed insulating layer (2) containing a thermosetting resin having cells, coated directly or indirectly onto the outer periphery of the conductor (1) and an outer insulating layer (3) containing a thermoplastic resin having a melting point of 240?C or higher when the thermoplastic resin is a crystalline resin or a thermoplastic resin having a glass transition temperature of 240?C or higher when the thermoplastic resin is a non-crystalline resin; electrical equipment using the insulated wire; and a method of producing the insulated wire, containing a step of forming a foamed insulating layer (2) by applying a varnish for forming the foamed insulating layer (2) on the outer periphery of a conductor (1), by generating foams during baking and a step of forming an outer insulating layer (3) by extrusion-molding a thermoplastic resin composition for forming the outer insulating layer (3) on the outer periphery of the foamed insulating layer (2). Figure 1.