PROTECTIVE EARTHING CONDUCTORS are considered to comply without test.
2
建筑物的电气设施。第5 - 54部分:电气设备的选择和安装。接地措施保护导体和保护跨接线。
Electrical installations of buildings - part 5-54: selection and erection of electrical equipment; earthing arrangements, protective conductors and protective bonding conductors.