What causes overheating in cables?

Overheating in cables is primarily caused by excessive current flow, which generates heat due to the electrical resistance of the conductor material. Factors such as poor insulation, inadequate cable sizing for the load, and environmental conditions (like high ambient temperatures or poor ventilation) can exacerbate this issue. Additionally, damaged or degraded insulation can lead to short circuits, further increasing heat generation. If not addressed, overheating can result in insulation failure, fire hazards, and equipment damage.