Typical effects of arc flash energy release include which of the following?

• A. Pressure waves that can damage hearing
• B. High‑intensity flash that can damage eyesight
• C. Superheated ball of gas that can severely burn and melt metal
• D. All of the above

Answer: (D)

Arc flash releases energy in several hazardous ways: a blast creates pressure waves that can damage hearing, the intense light from the flash can injure or damage the eyes, and the arc generates superheated gas that can cause severe burns and even melt nearby metal. Because these different effects can occur together in a single arc flash event, choosing all of the above reflects the full range of typical hazards.