Draft Document - Cable trunking systems and cable ducting systems for electrical installations - Part 2-4: Particular requirements - Service poles and service posts (IEC 23A/966/CD:2021); Text in German and English
文件草案——电气装置用电缆槽系统和电缆管道系统——第2-4部分:特殊要求——服务杆和服务杆(IEC 23A/966/CD:2021);德语和英语文本