What causes the cable to heat up? How to buy power cables?

When the power cable is under load current, the cable temperature is always higher or exceeds the allowable operating temperature, if the cause is not identified and rectified in time, the cable will continue to run, resulting in thermal insulation failures, short circuit trips and fires. Power cable manufacturers understand that, in use, cable heating can be caused by:

1. Power cable manufacturer - the heating phenomenon of the cable during operation may be that the conductor resistance of the cable does not meet the requirements.

2. Improper selection of cable type leads to too small cross-section of the cable conductor, resulting in overload during use. After long-term use, the cable heating and heat dissipation are unbalanced causing heating.

3. The cable is too close to other heat sources, which affects the normal heat dissipation of the cable or the installation of the power cable. The arrangement is too dense, the ventilation and heat dissipation effect is poor, and it may also cause the heating of the cable during operation.

4. The production process of the connector is not good, and the voltage connection is not tight, resulting in excessive contact resistance of the connector and heating of the cable.

5. Poor insulation between cables leads to low insulation resistance and heats up during operation.

6. The partial sheath of the armored cable is damaged, and the insulation performance is slowly damaged after entering the water, resulting in a gradual decrease in the insulation resistance and heating of the cable during operation.

In order to ensure the safe operation of power cables, it is recommended that when selecting power cables, the performance, layout and surrounding environment of the cables should be considered, and fireproof cables should be selected .