Why do wires and cables get hot when they are running?
With the development of electric power in China, the use of electric wire and cable is gradually increasing.When the wire and cable through a certain load current, I do not know if you have found that when the electricity will be used, the cable will be hot in operation.What the hell is going on here?Is there something wrong with the cable quality?Or is it a normal situation in the use of cables?What is the cause of cable heating?How should we deal with this situation of cable heating?
Next, let's follow the footsteps of Zen Cheng cable Xiaobian to see the reasons for cable heating and treatment methods!
The conductor resistance of the wire does not meet the requirements, causing the wire to generate heat during operation.
Improper choice of wire type, resulting in the use of the conductor section of the wire is too small, overload phenomenon in operation, after a long time of use, the heat and heat dissipation imbalance of the wire caused by heating phenomenon.
When the wires are installed, the arrangement is too dense, the ventilation and heat dissipation effect is not good, or the wires are too close to other heat sources, which affects the normal heat dissipation of the wires, and may also cause the heat phenomenon of the wires in operation.
The joint manufacturing technology is not good, crimping is not close, resulting in excessive contact resistance of the joint, and will also cause the wire to generate heat phenomenon.
The insulation performance of wire is not good, resulting in small insulation resistance, operation will also produce heat phenomenon.
The partial sheath of the wire is damaged, and the water will slowly destroy the insulation performance, resulting in the gradual reduction of the insulation resistance, and also cause the heating phenomenon in the operation of the wire.
