An object is to provide a crosslinkable resin composition which does not easily cause an increase in the pressure in an extruder charged with the crosslinkable resin composition, and with which an insulating coating layer can be continuously formed by extrusion molding for a long time, thereby realizing an increase in the production unit of an electric wire/cable.
A crosslinkable resin composition of the present invention contains 100 parts by mass of an ethylene-based resin (A), a stabilizer (B) containing 0.001 to 0.5 parts by mass of a hindered amine light stabilizer (B3) having a melting point or glass transition point of 100°C or less, and 0.5 to 3.0 parts by mass of an organic peroxide (C). All compounds contained in the stabilizer (B) have a molecular weight of 1,500 or less.