适用于2000伏及以下热塑性和热固性绝缘电线和电缆的材料、结构和测试，用于在室内、室外、空中、地下或潜艇的正常安装和使用条件下传输和分配电能。

Applies to materials, constructions, and testing of 2000 volts and less thermoplastic and thermoset insulated wires and cables, which are used for the transmission and distribution of electrical energy for normal conditions of installation and service, either indoors, outdoors, aerial, underground, or for submarines.