What class of extinguisher is suitable for both liquids and electrical fires?

The dry powder extinguisher is suitable for both liquid and electrical fires due to its versatility and effectiveness. It is specifically designed to combat Class B fires, which involve flammable liquids, as well as Class C fires, which include electrical equipment. The dry powder works by interrupting the chemical reaction of the fire, and when it is applied to flammable liquids, it can smother the flames and prevent re-ignition. Additionally, because it is not a conductive material, it can safely be used on live electrical equipment without the risk of causing further hazards, such as electrocution.

The effectiveness of dry powder in various fire situations makes it a recommended choice for environments where both types of fires might occur, thus ensuring safety and compliance with fire safety practices.