Electronic weir should equipped with protection and linkers must be professional. Flexible cord is only allowed in bulb holder .Wires cross ground should be protected by ditch and bridge.

• 铺设的电线，应采用护套线，其接头必须采用专用接头连接。除灯头线外不得使用花线。横跨道的电器等线路，应有过桥保护。