There aren t any researches on the transient characteristic and the selection of live working mode in the live working on the cable line in distribution network.

By introducing the testing standards for testing the fire perfoumance of the distributing cable at home and abroad,the paper analyzes the application of the distributing cable and the test of the cable performance when simulating the real fire.

The equipment cabinet used for equipment room in community with function of optical cable and cable distribution was described in this paper.

This paper introduces the arranging mode of the cable lines,analyzes the causes of the fire hazard occurring on the cable lines,and puts forward some measures for preventing the fire hazard occurring on the cable lines.

In the light of the running situation of the cable line in Changzhi s urban district in recent years, this paper analyzes on the harms and causes of the water intake of the cable well (trench), and puts forward some preventive measures from the design of the cable well (trench), the repair of the well cover, and the management of cable-head s manufacturing processes, etc.

The city power circuit includes the overhead line and the cable line.