The present disclosure relates to an insulated conductor for a telecommunications cable. The insulated conductor includes a first surface surrounding a core region of the notched conductor. The first surface defines a plurality of grooves extending radially inward towards the second longitudinal axis of the insulated conductor. Each of the plurality of grooves comprises of a first groove area section and a second groove area section. The first groove area section and the second groove area section are in continuous contact. The insulated conductor includes an insulation layer circumferentially surrounding the conductor. The insulated conductor has a first diameter in a range of about 0.5 millimeters to 0.65 millimeters. The telecommunications cable includes, plurality of twisted pairs of insulated conductors, a separator and a cable jacket.

A continuously transposed conductor (CTC) cable may include a plurality of electrically insulated strands arranged in first and second stacks with the plurality of strands successively transposed between the first and second stacks. The plurality of strands may include at least one strand having a plurality of component strands that are arranged in third and fourth stacks with the plurality of component strands successively transposed between the third and fourth stacks. Each of the components strands may include a conductor and insulation formed at least partially around the conductor.

An improved electric cable is disclosed herein. The resistance of the electric cable of the present disclosure is surprisingly decreased despite a reduction in the cross-sectional area of the conductor when at least one metal slug is positioned at an end of the cable. Conductor wires, which may or may not be individually insulated, may extend around a metal slug or through an aperture of the slug. In combination with at least one metal slug, the cross-sectional area of individual wires or the amount of wires within a stranded wire cable may be substantially reduced without seeing an expected proportionate increase in electrical resistance, and surprisingly, a decrease in resistance may be observed.

An improved electric cable is disclosed herein. The resistance of the electric cable of the present disclosure is surprisingly decreased despite a reduction in the cross-sectional area of the conductor when at least one metal slug is positioned at an end of the cable. Conductor wires, which may or may not be individually insulated, may extend around a metal slug or through an aperture of the slug. In combination with at least one metal slug, the cross-sectional area of individual wires or the amount of wires within a stranded wire cable may be substantially reduced without seeing an expected proportionate increase in electrical resistance, and surprisingly, a decrease in resistance may be observed.

A two-core twisted shielded cable includes two insulated wires being twisted together, a metal foil shield, a metal braid, and a sheath. A relationship between an ellipse circumscribing the two insulated wires and a width of the metal foil shield is the width=an elliptical circumference/(1??), and 0.20???0.40. The metal foil shield has a thickness of 15 ?m or more and 120 ?m or less, includes a metal layer and a PET film layer, and 0.10?(a metal layer thickness/a PET film layer thickness)?1.25.

The electric wire bundles includes a first reference axial line and a second reference axial line which are spaced apart from each other and fixed and arranged in parallel with each other, and a first wire and a second wire which are wound in a spiral pattern on the first and second reference axial lines in the first rotating direction or the second rotating direction, wherein the first wire and the second wire intersect at a central axis between the first reference axial line and the second reference axial line.

The electric wire bundles includes a first reference axial line and a second reference axial line which are spaced apart from each other and fixed and arranged in parallel with each other, and a first wire and a second wire which are wound in a spiral pattern on the first and second reference axial lines in the first rotating direction or the second rotating direction, wherein the first wire and the second wire intersect at a central axis between the first reference axial line and the second reference axial line.

In examples of the disclosure, a device may be couple an electrical load to a power source. The device may have a first coupling configured to couple to the power source and a second coupling configured to couple to the electrical load. The device may have a plurality of strands electrically disposed between the first coupling and the second coupling. Each of the plurality of strands may have a coating having a resistivity greater than 1.8?10.sup.?8 ?-m and less than 1 ?-m and a center conductor wrapped, at least in part, by the coating.

Provided are a core electric wire for multi-core cable that is superior in flex resistance at low temperature, and a multi-core cable employing the same. A core electric wire for multi-core cable according to an aspect of the present invention comprises a conductor obtained by twisting element wires, and an insulating layer that covers an outer periphery of the conductor, in which, in a transverse cross section of the conductor, a percentage of an area occupied by void regions among the element wires is from 5% to 20%. An average area of the conductor in the transverse cross section is preferably from 1.0 mm.sup.2 to 3.0 mm.sup.2. An average diameter of the element wires in the conductor is preferably from 40 m to 100 m, and the number of the element wires is preferably from 196 to 2,450. The conductor is preferably obtained by twisting stranded element wires obtained by twisting subsets of element wires. The insulating layer preferably comprises as a principal component a copolymer of ethylene and an -olefin having a carbonyl group.

Provided are a core electric wire for multi-core cable that is superior in flex resistance at low temperature, and a multi-core cable employing the same. A core electric wire for multi-core cable according to an aspect of the present invention comprises a conductor obtained by twisting element wires, and an insulating layer that covers an outer periphery of the conductor, in which, in a transverse cross section of the conductor, a percentage of an area occupied by void regions among the element wires is from 5% to 20%. An average area of the conductor in the transverse cross section is preferably from 1.0 mm.sup.2 to 3.0 mm.sup.2. An average diameter of the element wires in the conductor is preferably from 40 m to 100 m, and the number of the element wires is preferably from 196 to 2,450. The conductor is preferably obtained by twisting stranded element wires obtained by twisting subsets of element wires. The insulating layer preferably comprises as a principal component a copolymer of ethylene and an -olefin having a carbonyl group.