Abstract: A DC high-voltage wire comprising: a conductor; a resin composition layer coating the conductor, the resin composition layer comprising a polyolefin resin containing carbon black in an amount of not less than 10 parts by weight per 100 parts by weight of the polyolefin resin, having an insulation resistance of not more than 10.sup.10 .OMEGA..cndot.cm; an insulating layer coating the resin composition layer, the insulation layer comprising polyethylene having a softening temperature of not lower than 105.degree. C.; and a fire retardant protective coating layer coating the insulating layer, the fire retardant protective coating layer comprising (1) a terpolymer of ethylene, vinyl acetate and vinyl chloride, and/or a terpolymer of ethylene, methyl methacrylate and vinyl chloride, and (2) a copolymer of chlorinated ethylene and vinyl chloride; the resin composition layer, the insulating layer and the fire retardant protective coating layer each being crosslinked.

Abstract: A radiation crosslinked molding of a urethane resin composition comprising a thermoplastic urethane resing having incorporated therein a polyfunctional monomer selected from the group consisting of trimethylolpropane triacrylate, trimethylolpropane trimethacrylate and triacrylformal., is disclosed. The molding according to the present invention has excellent resistance to hot water and heat.

Abstract: An electrical wire in which a core of stranded, insulated conductors is first coated with a thermoplastic resin layer having of melt index of at least 0.2 and then extrusion coated with a urethane resin layer. The urethane resin layer may be radiation cured.