What is the effect of thermal overload on electrical components?

Thermal overload occurs when electrical components, such as wires or devices, are subjected to a current that exceeds their rated capacity. This excessive current results in a significant increase in temperature. The effect of this overheating can lead to various forms of damage to the components involved.

For instance, insulation may degrade, mechanical properties may weaken, and the overall lifespan of the component can be significantly shortened. In severe cases, thermal overload can cause components to fail outright, leading to equipment malfunctions or even fire hazards.

Understanding the risks associated with thermal overload is crucial in ensuring safety and reliability in electrical installations, as it highlights the importance of appropriate fusing and circuit protection methods to mitigate these risks.