An arc blast creates what kind of wave during an arc fault?

An arc blast is a rapid release of energy that occurs during an electrical arc fault, resulting in a highly energetic event. The correct choice highlights the specific type of wave generated during this explosive discharge.

A pressure wave is generated as the arc creates a sudden and extreme increase in temperature and volume of the surrounding air. This rapid expansion results in a shock effect that travels through the air, manifesting as a pressure wave. These pressure waves can cause significant physical damage to nearby objects and pose serious risks to individuals in the vicinity.

While shockwaves, sound waves, and heat waves may also be associated with the phenomena of an arc blast, it is the pressure wave that specifically characterizes the violent air movement resulting from the abrupt expansion due to the intense heat generated by the arc.