What are the common faults of low-voltage cables in daily work?

What are the common faults of low-voltage cables in daily work?

(1) Mechanical damage. The reason is: due to poor management, improper construction, it is the direct external cable damage;

(2) Lead fatigue, cracking, cracking, and cracking. The reason is: due to poor installation conditions, poor cable quality or long-term overload of the cable, etc.;

(3) Outdoor cable The terminal head of this type of low-voltage cable bursts. The reasons are: poor design, improper construction, and poor operation and maintenance;

(4) The middle connector exploded. The reasons for this are: poor design, poor conductor connection, poor lead water seal, poor water intake, etc.

(5) Thermal breakdown. The reason is: due to long-term overload, poor heat dissipation and other reasons;

(6) Overvoltage breakdown. The reason is: lightning invade wave overvoltage or internal overvoltage;

(7) Cover corrosion. The reason is: the point of underground corrosion or chemical corrosion erosion of the sheath damage.