What type of fire extinguisher is required for electrical equipment fires in construction areas?
Correct Answer
C) Class C or multipurpose ABC
Class C extinguishers are specifically designed for electrical fires, or multipurpose ABC extinguishers can be used. Class C extinguishers use non-conductive extinguishing agents that won't create additional electrical hazards.
Why This Is the Correct Answer
Class C extinguishers are specifically designed for electrical equipment fires because they use non-conductive extinguishing agents like carbon dioxide or dry chemical powders that won't conduct electricity. Multipurpose ABC extinguishers are also acceptable because they contain the Class C capability along with Class A and B protection. Using the correct extinguisher type prevents electrocution hazards that could occur if water-based or conductive agents were used on energized electrical equipment. This is critical for construction site safety where electrical tools and temporary power systems are common.
Why the Other Options Are Wrong
Option A: Class B only
Class B extinguishers are designed for flammable liquid fires like gasoline, oil, and grease, not electrical equipment fires. While some Class B agents may be non-conductive, they are not specifically rated or designed for electrical fire safety requirements.
Option B: Class D only
Class D extinguishers are designed specifically for combustible metal fires like magnesium, titanium, and sodium, which are rare in typical construction applications. They would be ineffective and inappropriate for electrical equipment fires.
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