EN 50085-2-1：電氣設備用電纜干線系統和電纜管道系統-預期安裝在墻和頂棚上的電纜干線系統和電纜管道系統
EN 50085-2-1：Cable trunking systems and cable ducting systems for electrical installations Part 2-1: Cable trunking systems and cable ducting systems intended for mounting on walls and ceilings
