Abstract: An electrical wire includes a conductor and an insulating layer that covers the conductor and that is cross-linked. The insulating layer is a cross-linked product of a resin composition including (a) a base polymer containing polyolefin and a compatibilizer, (b) a photoradical generator of 0.5 parts by mass or more and 3 parts by mass or less relative to the 100 parts by mass of the base polymer, and (c) a reactive monomer of 1 part by mass or more and 5 parts by mass or less relative to the 100 parts by mass of the base polymer. A relative dielectric constant of the insulating layer is less than 2.5.

Abstract: An electrical wire includes a metal conductor and an insulation layer. A wire diameter of the metal conductor is 0.20 mm or smaller. The insulation layer covers the metal conductor. The insulation layer includes an ultraviolet-crosslinkable resin composition containing 80% by mass or more of a thermoplastic resin. The ultraviolet-crosslinkable resin composition desirably contains, relative to 100 parts by mass of the thermoplastic resin, 0.5 parts by mass or more and 5 parts by mass or less of a photoradical generator, and 1 part by mass or more and 15 parts by mass or less of a reactive monomer.

Abstract: An electrical wire includes a conductor and an insulating layer that covers the conductor and that is cross-linked. The insulating layer is a cross-linked product of a resin composition including (a) a base polymer containing polyolefin and a compatibilizer, (b) a photoradical generator of 0.5 parts by mass or more and 3 parts by mass or less relative to the 100 parts by mass of the base polymer, and (c) a reactive monomer of 1 part by mass or more and 5 parts by mass or less relative to the 100 parts by mass of the base polymer. A relative dielectric constant of the insulating layer is less than 2.5.

Abstract: An electrical wire includes a metal conductor and an insulation layer. A wire diameter of the metal conductor is 0.20 mm or smaller. The insulation layer covers the metal conductor. The insulation layer includes an ultraviolet-crosslinkable resin composition containing 80% by mass or more of a thermoplastic resin. The ultraviolet-crosslinkable resin composition desirably contains, relative to 100 parts by mass of the thermoplastic resin, 0.5 parts by mass or more and 5 parts by mass or less of a photoradical generator, and 1 part by mass or more and 15 parts by mass or less of a reactive monomer.