Which statement is correct about extinguishing methods for energized electrical fires?

Which statement is correct about extinguishing methods for energized electrical fires?

• A. Water is the preferred extinguishing agent for energized electrical fires.
• B. Dry chemical extinguishers are never used on energized electrical fires.
• C. Carbon dioxide extinguishers cannot be used on energized electrical fires.
• D. Never use water around electrical equipment; carbon dioxide or dry chemical extinguishers are used instead.

Answer: (D)

Water should not be used on energized electrical fires because it conducts electricity. If the equipment is live, using water can create a path for the current, risking electrocution and potentially spreading the fire as current seeks new paths. Instead, non-conductive extinguishing agents are used. Dry chemical extinguishers are effective on electrical fires because they are non-conductive and interrupt the flame reactions, making them suitable for energized equipment. Carbon dioxide extinguishers can also be used to blanket the fire and smother it without conducting electricity. However, CO2 can pose asphyxiation risks in enclosed spaces, so it must be used where ventilation and safety for occupants are not compromised. In short, never use water around electrical equipment; use carbon dioxide or dry chemical extinguishers instead.

Water should not be used on energized electrical fires because it conducts electricity. If the equipment is live, using water can create a path for the current, risking electrocution and potentially spreading the fire as current seeks new paths. Instead, non-conductive extinguishing agents are used. Dry chemical extinguishers are effective on electrical fires because they are non-conductive and interrupt the flame reactions, making them suitable for energized equipment. Carbon dioxide extinguishers can also be used to blanket the fire and smother it without conducting electricity. However, CO2 can pose asphyxiation risks in enclosed spaces, so it must be used where ventilation and safety for occupants are not compromised. In short, never use water around electrical equipment; use carbon dioxide or dry chemical extinguishers instead.