JIS C8471-2-1-2000 电气设备的电缆线槽和导管系统.第2部分:特殊要求.第1节:固定于墙上和天花板上的电缆线槽和导管系统
Cable trunking and ducting systems for electrical installations -- Part 2: Particular requirements -- Section 1: Cable trunking and ducting systems intended for mounting on walls or ceilings