Compressed stranded conductor, method of manufacturing compressed stranded conductor, insulated electric wire, and wire harness

A method of manufacturing a compressed stranded conductor that compresses a central stranded wire having a plurality of conductive strands which are twisted together, and an outer circumferential stranded wire having a plurality of conductive strands which are twisted together at an outer circumference of the central stranded wire and disposed at the outer circumference of the central stranded wire as a layer, the method comprising:

• a first compression process of compressing the central stranded wire with a first compression die to set a first occupancy ratio to be 84.2% or more and 87.7% or less, wherein the first compression die has a first hole having a first cross-sectional area, wherein the first occupancy ratio is a ratio of a cross-sectional area of the central stranded wire after compression with respect to the first cross-sectional area of the first hole of the first compression die;
• and
• a second compression process of compressing a composite stranded wire, in which the outer circumferential stranded wire is disposed at an outer circumference of the central stranded wire, with a second compression die to set a second occupancy ration to be 90.2% or more and 91.0 or less, wherein the second compression dies has a second hole having a second cross-sectional area, wherein the second occupancy ratio of a cross-sectional area of the composite stranded wire after compression with respect to the second cross-sectional area of the second hole of the second compression die.