WATER STOP TREATMENT METHOD AND INSULATED POWER CABLE

A water stopping treatment simply and assuredly prevents water from moving or entering to a circuit board or the like. A one end of a core wire (41) is exposed from an insulation cover (42). An exposing part (A) that is peeled off from the insulation cover (42) and exposed from the insulation cover (42) is formed at an arbitrary position from the one end to the other end of the core wire. A water stopping agent (48) is filling from the exposing part (A) toward the other end of the core wire (41).