🧯 Categories of Fire Extinguishers

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Here’s a clear breakdown of the categories (types) of fire extinguishers based on their extinguishing agent and suitable fire class:

🧯 Categories of Fire Extinguishers

Extinguisher Type Color Code (UK/EU) Used For Fire Class Suitable For Not Suitable For
Water 🔴 Red Class A Wood, paper, cloth Class B, C, D, E, F
Foam (AFFF) 🟠 Cream Class A & B Solids, flammable liquids Electrical, metals, oil fires
Dry Powder (ABC) 🔵 Blue Class A, B, C, E Multi-purpose: solids, liquids, gases, electrical Not ideal indoors (dusty), Class F
CO₂ (Carbon Dioxide) ⚫ Black Class B & E Electrical fires, flammable liquids Confined spaces (risk of asphyxiation)
Wet Chemical 🟡 Yellow Class F (and A) Cooking oils/fats (deep fryers) Flammable liquids, metals, gases
Specialist Dry Powder 🔵 Blue Class D Combustible metals (magnesium, titanium) All other fire types

🔑 Quick Tips:

  • ✅ CO₂ is best for electrical fires (servers, panels).

  • 🚫 Water should never be used on electrical or oil fires.

  • ✅ Foam is good for petrol/diesel fires.

  • ✅ Wet Chemical is the only safe method for kitchen oil fires.

  • ✅ Dry Powder is the most versatile but messy and harmful to electronics.

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