What happens if a conductor is operated above its ampacity rating?

When a conductor is operated above its ampacity rating, it can lead to overheating, which poses a significant risk of failure. Ampacity refers to the maximum amount of electric current a conductor can carry without exceeding its temperature rating. Operating beyond this limit can elevate the temperature of the conductor significantly, leading to insulation breakdown, reduced conductivity, and potential physical damage to the conductor itself.

Overheating may result in a variety of consequences including melting insulation, increased resistance, electrical fires, or even total failure of the conductor. Therefore, ensuring that conductors are operated within their specified ampacity is crucial for safe and reliable electrical system performance. This understanding is vital for anyone involved in electrical design, maintenance, or safety planning.