Four, and then the (AC) region of the L, N access to the 220V power supply (2.5 of copper core wires), such as the installation position is low, the best grounding wire.
再将变压转换器的（AC）区域的L、N接入220V电源（2.5的铜芯电线），如安装位置较低，最好接上地线。
The construction projects as mentioned in this Regulation refer to the projects of civil construction, construction works, installation of wires, pipelines and equipment, and decoration.
本条例所称建设工程，是指土木工程、建筑工程、线路管道和设备安装工程及装修工程。
The term "construction projects" as mentioned in the present Regulations refers to the civil construction, construction works, installation of wires, pipelines and equipment, and decoration.
本条例所称建设工程，是指土木工程、建筑工程、线路管道和设备安装工程及装修工程。
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