What works by class
Class A (solids) responds to water or foam cooling. Class B (flammable liquids) needs foam or dry chemical; water can be dangerous on many liquid fires. For electrical fires, cutting power comes first; CO₂ or clean agents smother equipment — conductive water is not used.
Kitchen grease fires need a specialised class (often F / hood systems); ABC powder is not always right. Transformer rooms need a fixed suppression scenario before portable extinguishers.
- A: water / foam / ABC powder
- B: foam / ABC powder
- Electrical: isolate power + CO₂ / clean agent / suitable powder
- Grease kitchens: specialised wet chemical / hood systems
What actually buys seconds
Seconds are won when the extinguisher is reachable, pressurised and the user is trained. A unit with a red gauge fails even if it holds the “best” agent.
Early detection (detector + alarm) catches a fire while small — noticing it often matters more than the agent brand. Detection, extinguisher maintenance and training are one chain.
The right answer for your site
Skip one-line internet answers; use a risk survey. In Bursa, BY YANGIN clarifies dominant classes, mounting points and how the alarm is heard. Continue on our services and fire training pages.