How many times larger can copper parts expand when vaporizing during an arcing-fault event?

When discussing the expansion of copper parts during an arcing-fault event, it is important to consider the extreme conditions that accompany such faults. During an arcing fault, the electrical energy can create an intense heat that vaporizes the copper. This process involves the transformation of solid metal into a gaseous state, leading to significant expansion.

Scientific literature and research indicate that when copper is vaporized under these conditions, it can expand by approximately 67,000 times its original volume. This remarkable increase occurs due to the phase change from solid to gas, which requires enormous amounts of energy and translates into a dramatic increase in volume.

Understanding this concept is crucial for safety protocols and risk assessment in electrical installations, as the displacement of air and the creation of gaseous copper during such an event can significantly affect the environment and safety of nearby individuals. Awareness of the potential for such expansion can help in designing better protective measures to mitigate the risks associated with arcing faults.