What are the three hazards of electricity?

• A. Shock; Arc Flash; Arc Blast
• B. Fire; Heat; Noise
• C. Electric Shock; Voltage Drop; Ground fault
• D. Arc Flash; Arc Blast; Arc Bloom

Answer: (A)

Electric safety focuses on three primary hazards from energized equipment: electric shock, arc flash, and arc blast. Electric shock occurs when a person becomes part of the electrical circuit and current passes through the body; its danger depends on how much current flows, the path it takes through the body, how long it lasts, and the system’s impedance. Arc flash is a rapid release of energy from an arcing fault, producing extremely intense heat, bright light, and radiation that can cause severe burns, eye injury, and ignite clothing. Arc blast is the accompanying pressure wave created by the rapidly expanding plasma and heated air during an arc, capable of throwing objects, damaging equipment, and injuring nearby people. These three cover the main ways electricity can injure someone in typical work environments, which is why they are listed as the hazards. The other options mix outcomes or fault types that aren’t considered separate, standalone electrical hazards in the same way (for example, voltage drop and ground fault are circuit conditions rather than the primary hazards; arc bloom isn’t a standard term).