Which fire extinguisher types are recommended in case of fire?

• A. Water jet
• B. Dry chemical (BC) or CO2
• C. Foam
• D. Wet chemical

Answer: (B)

The main idea is to choose extinguishing agents that are safe to use on the types of fires you’re likely to encounter, especially when electrical equipment may be involved. Dry chemical extinguishers labeled for use on flammable liquids and electrical fires (B and C) are effective because they interrupt the chemical reactions occurring in the flame and they do not conduct electricity, reducing the risk to the operator and equipment. Carbon dioxide extinguishers are also suitable for electrical fires and some liquid fires; they displace oxygen without leaving a conductive residue, which helps protect sensitive equipment in enclosed spaces.

Water-based options, like a water jet, can conduct electricity and spread flames, making them unsafe for electrical incidents and some liquid fires. Foam relies on water and is better for fires involving ordinary combustibles and flammable liquids but isn’t ideal for live electrical equipment. Wet chemical extinguishers are specialized for commercial kitchens dealing with cooking oil fires and aren’t the general choice for most workplace fire scenarios.

Therefore, dry chemical (BC) or CO2 extinguishers are the best recommended types for many cases, especially where electrical fires may be involved, because they safely handle B and C class fires without conducting electricity or causing damage from water-based agents.