A wire conductor has a plurality of elemental wires made of aluminum or an aluminum alloy, which are stranded with each other and arranged, in cross-section intersecting an axial direction of the wire conductor, in which one or a plurality of virtual elemental wires are removed from an outer peripheral portion of a virtual cross-section represented by a maximum number of virtual elemental wires accommodated in a circumscribing figure approximated by a regular hexagon, the virtual elemental wires having a same diameter as the elemental wires. The wire conductor includes a plurality of slave strands, each being a strand of the plurality of elemental wires, a maximum diameter cross-sectional area ratio is 0.63 or higher that is calculated by dividing a cross-sectional area of the wire conductor by an area of a circle having a diameter equal to a maximum value of an outer diameter of the wire conductor.

A wire conductor has a plurality of elemental wires made of aluminum or an aluminum alloy, which are stranded with each other and arranged, in cross-section intersecting an axial direction of the wire conductor, in which one or a plurality of virtual elemental wires are removed from an outer peripheral portion of a virtual cross-section represented by a maximum number of virtual elemental wires accommodated in a circumscribing figure approximated by a regular hexagon, the virtual elemental wires having a same diameter as the elemental wires. The wire conductor includes a plurality of slave strands, each being a strand of the plurality of elemental wires, a maximum diameter cross-sectional area ratio is 0.63 or higher that is calculated by dividing a cross-sectional area of the wire conductor by an area of a circle having a diameter equal to a maximum value of an outer diameter of the wire conductor.

An electric wire conductor capable of achieving both flexibility and a space-saving property, a covered electric wire and a wiring harness including such an electric wire conductor. The electric wire conductor contains a wire strand containing a plurality of elemental wires twisted together, and has a flat portion where a cross-section intersecting an axial direction of the wire strand has a flat shape. A covered electric wire contains the electric wire conductors and an insulator covering the electric wire conductors. A wiring harness contains such covered electric wires.

Provided is a coated electric wire that has excellent electroconductivity comparable to a wire made of copper, aluminum, or the like and that exhibits excellent weight reduction and heat dissipation characteristics. A coated carbon nanotube electric wire includes: a carbon nanotube wire including one or more carbon nanotube aggregates configured of a plurality of carbon nanotubes; and an insulating coating layer coating the carbon nanotube wire, and a proportion of a sectional area of the insulating coating layer in a radial direction with respect to a sectional area of the carbon nanotube wire in the radial direction is equal to or greater than 0.001 and equal to or less than 1.5.

The present disclosure relates to a carbon nanotube strand wire obtained by twisting a plurality of CNT wires of a plurality of bundled CNT aggregates configured of a plurality of CNTs together. A number of twists t1 of the CNT wires is equal to or greater than 0 and less than 2500 T/m, and a number of twists t2 of the CNT strand wire is greater than 0 and less than 2500 T/m.

The present disclosure relates to a carbon nanotube strand wire capable of realizing electroconductivity that is equivalent to electroconductivity of a wire configured of a core wire made mainly of metal such as copper or aluminum, realizing excellent handling ability, and additionally realizing further weight reduction. A CNT strand wire is obtained by twisting a plurality of CNT wires of a plurality of bundled CNT aggregates configured of a plurality of CNTs together. At least one of a number of twists t1 of the CNT wires and a number of twists t2 of the CNT strand wire is equal to or greater than 2500 T/m, or the number of twists t1 of the CNT wires is equal to or greater than 1000 T/m and less than 2500 T/m while the number of twists t2 of the CNT strand wire is equal to or greater than 500 T/m and less than 2500 T/m, or the number of twists t1 of the CNT wires is equal to or greater than 500 T/m and less than 1000 T/m while the number of twists t2 of the CNT strand wire is equal to or greater than 1000 T/m and less than 2500 T/m.

The present disclosure relates to a coated carbon nanotube electric wire that has excellent electroconductivity that is comparable to a wire made of copper, aluminum, or the like, realizes excellent voltage endurance, and can further realize weight reduction. A coated carbon nanotube electric wire includes: a carbon nanotube wire including one or more carbon nanotube aggregates configured of a plurality of carbon nanotubes; and an insulating coating layer coating the carbon nanotube wire, a proportion of a sectional area of the insulating coating layer in a radial direction with respect to a sectional area of the carbon nanotube wire in the radial direction is greater than 1.5, the sectional area of the carbon nanotube wire in the radial direction is equal to or greater than 0.031 mm.sup.2, and the sectional area of the insulating coating layer in the radial direction is equal to or greater than 0.049 mm.sup.2.

The present disclosure relates to a coated carbon nanotube electric wire includes: a carbon nanotube wire including one or more carbon nanotube aggregates configured of a plurality of carbon nanotubes; and an insulating coating layer with which the carbon nanotube wire is coated, and the insulating coating layer is configured of a material with a refractive index nD of equal to or greater than 1.45.

The present disclosure relates to a coated carbon nanotube electric wire includes: a carbon nanotube wire including one or more carbon nanotube aggregates configured of a plurality of carbon nanotubes; and an insulating coating layer with which the carbon nanotube wire is coated, in which a proportion of a Young's modulus of a material configuring the insulating coating layer with respect to a Young's modulus of the carbon nanotube wire is equal to or greater than 0.001 and equal to or less than 0.01.

The present disclosure relates to a coated carbon nanotube electric wire includes: a carbon nanotube wire including one or more carbon nanotube aggregates configured of a plurality of carbon nanotubes; and an insulating coating layer with which the carbon nanotube wire is coated, in which a proportion of a Young's modulus of a material configuring the insulating coating layer with respect to a Young's modulus of the carbon nanotube wire is equal to or greater than 0.0001 and equal to or less than 0.01.