If people are in a long-term working state, they will experience fatigue, and the power cord is no exception. Over a long period of time, the power cord will start to heat up. Heat will accelerate the aging of the power cord, so that the insulation is broken down. Electrical faults are especially common in summer. In addition to excessive operation, the overall weather in summer is relatively high, which is not conducive to the long-term operation of the power cord.
1. External force damage
In many accidents, the failure of the power line is caused by external forces. At present, civil construction is being carried out in many places. If the construction does not consider the power cord buried in the construction land, then the machine will damage it during construction. If the excavator is digging, the power cord will be cut off without reasonable operation. In addition, improper operation during installation will also cause failure of the power cord.
2. Insulation damp
It is also very common for power cords to fail due to moisture in the insulation. With the passage of time, the inner and outer sheaths of the power cord will age, especially in harsh environments, where the probability of insulation being damp is very high. For example, the power cord buried in the ground for a long time will be corroded by the soil, resulting in various failures.
3. Chemical corrosion
With the destruction of the environment, today's rainwater is acidic. Various chemical corrosions will appear on the power cord after long-term exposure to the sun and rain outdoors. Of course, it does not rule out that the environment used by the power cord has an acid-base effect, which will cause the armor, lead skin or outer sheath to be corroded, thereby making the power cord lose its original function.