Threading is the work of connecting the insulated conductor from the distribution box through the distribution pipe to the electrical equipment. In order not to damage the conductor, air blowing or cloth should be used to clean the inside of the pipe before threading, then talcum powder should be blown in, and the protective sleeve should be installed at the end.
YCB扁电缆,导线穿管一般用钢丝引入，当管路较长或者弯头较多的时候，应一端有人接线，另一端有人送线，而且两人动作要协调，穿入馆内的导线应平行，不要相互缠绕。
When the pipeline is long or there are many elbows, there should be someone at one end for wiring and someone at the other end for wire feeding, and the two people should coordinate their actions. The wires going into the museum should be parallel and not intertwined.
为了使穿在导管内的线路安全可靠地工作，凡是同一回路的导线必须穿在同一根管内，而不同电压的回路，禁止同管敷设，管内导线不许有接头。
In order to make the line in the conduit work safely and reliably, all the wires in the same circuit must be in the same pipe, while the circuits with different voltages are not allowed to be laid in the same pipe, and the wires in the pipe are not allowed to have joints.