Which type of fire extinguisher is specified for fires involving electrical components?

The correct answer for fires involving electrical components is the use of CO2 (carbon dioxide) and dry powder extinguishers. These types of extinguishers are specifically designed to safely extinguish fires without conducting electricity. CO2 works by displacing oxygen in the vicinity of the fire, effectively suffocating it, while dry powder absorbs heat and interrupts the combustion process.

CO2 extinguishers are particularly useful for fires involving electrical equipment because they do not leave behind any residue that could damage sensitive electronic components or create further hazards. Similarly, dry powder extinguishers can be used on various types of fires, including those involving electrical equipment as long as they are suitable for the materials involved.

In contrast, foam extinguishers are intended for flammable liquid fires and can conduct electricity, making them unsuitable for electrical fires. Water extinguishers are highly ineffective and potentially dangerous when applied to electrical fires, as water conducts electricity and poses a significant risk of electrocution. Wet chemical extinguishers are primarily designed for kitchen fires involving cooking oils and fats and may not be appropriate for electrical components. Thus, CO2 and dry powder are the most suitable choices for addressing fires that involve electrical equipment.