Covered line Wire is used primarily for overhead secondary distribution lines. It is not an electrically insulated conductor and is treated as bare conductor when installed.
The code words as given apply to conventional polyethylene line wire.
Operation Temperature of Insulation:
Normal:PE 75°C – XLPE 90°C
Emergency: PE 95°C – XLPE 130°C
Short Circuit: PE 150°C – XLPE 250°C