This standard is. Specifies multi-core insulated wires (hereinafter referred to as electric wires) insulated with a compound mainly composed of vinyl chloride resin (hereinafter referred to as vinyl) mainly used for overhead service lines of 600V or less.
JIS C 3341:2000 history
2000JIS C 3341:2000 Polyvinyl chloride insulated drop service wires
1992JIS C 3341:1992 Polyvinyl chloride insulated drop service wires