Which type of fire extinguisher is suitable for electronic fires (Class C)?

A Carbon Dioxide (CO2) extinguisher is suitable for electronic fires, classified as Class C fires. This is because CO2 extinguishers work by displacing oxygen around the fire while simultaneously lowering the temperature, effectively smothering the fire without leaving any residue. This is particularly important in electronic fires, where sensitive equipment would be damaged by the residues left by other types of extinguishing agents.

In contrast, foam extinguishers and water extinguishers are not appropriate for Class C fires due to the risk of electrical shock or equipment damage. Foam extinguishers are primarily designed for flammable liquid or solid material fires and could conduct electricity. Similarly, water extinguishers conduct electricity, creating a dangerous situation when used on live electrical equipment.

Powder extinguishers can be effective on electronic fires but are typically less recommended in sensitive electronic environments due to their potential to damage the equipment with the dry powder residue they leave behind. Thus, the CO2 extinguisher is the safest and most effective choice for managing fires involving electrical equipment.