10/29/2026
🔥 Classes of Fire: How Do You Remember What’s Burning?
Not all fires are the same, and not all fire extinguishers work on every type of fire!
Here’s a simple trick to remember the five classes of fire using mnemonics:
🟢 Class A – Ash
Wood, paper, cloth, and other ordinary combustibles that usually leave ash when burned.
🔴 Class B – Boil
Flammable and combustible liquids such as gasoline, diesel, and certain paints.
🔵 Class C – Current
Fires involving energized electrical equipment, such as appliances, wiring, and electrical panels.
🟡 Class D – Dent
Combustible metals such as magnesium, sodium, and titanium. These require special extinguishing agents.
⚫ Class K – Kitchen
Cooking oils and fats, especially those used in deep fryers and commercial kitchens.
**Why is knowing the fire class important?
Using the wrong extinguisher can make a fire worse or put you in danger.
Know what’s burning, use the correct extinguisher, and only attempt to extinguish a small, early-stage fire if you’re trained and have a safe escape route.
📌 Did you know?
These classifications follow the NFPA/U.S. system. Some countries use Class F instead of Class K for cooking oils and fats.
💬 In your country, is a cooking oil or grease fire classified as Class K or Class F? Share your answer and country in the comments!
