What type of fire extinguisher is used for combustible solids?

The correct type of fire extinguisher used for combustible solids, such as wood, paper, and some types of plastics, is the Type A extinguisher. Type A extinguishers contain water or a water-based solution that is effective in cooling the burning material and suppressing the fire. They work by absorbing heat and reducing the temperature of the burning substance to below its ignition point, thus extinguishing the fire.

Type B extinguishers are meant for flammable liquids, such as gasoline and oil. They typically contain foam or dry chemicals that smother the flames. Type C extinguishers are designed for fires involving electrical equipment, utilizing non-conductive agents like CO2 or dry chemicals to avoid the risk of electrical shock. Finally, Type D extinguishers are specifically for combustible metals, like magnesium and sodium, which require specialized agents to extinguish the fire safely.

Understanding the type of fire extinguisher needed for specific materials is crucial for effective fire safety measures, ensuring that the right agent is available to combat a fire based on its source.