What is the possible sound pressure during an Arc Blast?

An Arc Blast can generate extremely high sound pressure levels due to the rapid expansion of air heated by the electric arc. The correct choice indicates that the sound pressure during such an event can reach 160 decibels or greater. This level of sound pressure is not only overwhelming but also poses significant risks for hearing damage or loss.

The reason this choice is accurate relates to the nature of the phenomenon. When an arc occurs, it produces a shock wave similar to that of an explosion, which can create intense sound waves. The measurement of 160 decibels is indicative of the extreme energy released in an arc blast, leading to sounds that can be physically damaging to anyone nearby.

In the context of the other options, while they indicate high decibel levels, they do not reach the severity of 160 decibels, which is recognized in various safety and technical standards as a potential sound level for hazardous electrical events like Arc Blasts. Understanding the impact of such high sound levels is crucial for safety training and awareness in environments where electrical equipment is operated.