class B
It's NOT class A - which is flammable solids. Electrical fires are class C (burning liquids are class B, burning metals are class D)
B-1 is for a Class B fire, that is, flammable/combustible liquids and gases.
An electrical fire is a class 'C' fire. In addition, Class 'A' is combustibles that leave an ash. (Paper, etc.) Class 'B' is flammable liquids. Class 'C' is electrical. Class 'D' is a metal fire.
flammable liquids
Class b
In the US and international scheme for classifying hazardous materials in transportation, flammable liquids are in Hazard Class 3.
Class B
Flammable liquids
Obviously not. Many liquids are flammable.
Flammable catches on fire. Combustible explodes. Boooyah!
Class A extinguishers are designed for "ordinary flammable materials" (organic solids such as paper and wood) but not liquids like gasoline, grease, electrical fires, or flammable metals.