Classes of Fires. There are four classes of fires: Class A: Ordinary solid combustibles such as paper, wood, cloth and some plastics. Class B: Flammable liquids such as alcohol, ether, oil, gasoline and grease, which are best extinguished by smothering. Class C: Electrical equipment, appliances and wiring in which the use or a nonconductive extinguishing agent prevents injury …
Extinguishers that work for Class A as well as B fires. The foam agent can be used in Class B fires by separating the oxygen and the fuel by forming a sealing over the flammable liquid. But, these extinguishers can only work if the flammable fluid is …
What is a Class B Fire Extinguisher Used For?
Foam: These extinguishers work on both Class A and B fires. The foam agent works on Class B fires by separating the fuel and the oxygen by creating a seal on the surface of the flammable liquid. However, these extinguishers will only be effective when the flammable liquid is not free-flowing.
People Also Ask which fires are class a/b extinguishers used for
What are the different types of fires that extinguishers are designed to fight?
There are different types of fires that extinguishers are designed to fight. These include: Class A – a fire started with normal combustibles such as wood, paper, and cloth. Class B – a fire started with flammable and combustible liquids and gases such as gasoline and paints.
What is a Class B fire extinguisher used for?
Class B: Flammable liquids such as alcohol, ether, oil, gasoline and grease, which are best extinguished by smothering. Class C: Electrical equipment, appliances and wiring in which the use or a nonconductive extinguishing agent prevents injury from electrical shock.
What is a Class C fire extinguisher rating?
There is no numerical rating for Class C, Class D or Class K fires. For example, an extinguisher that is rated 3A:10B:C indicates the following: Intended for Class A, B, and C fires and contains 3.75 gallons of water extinguishing capacity, covers 10 square feet of area, and works on electrically charged equipment.
What are Class B and Class C fires?
Class B – a fire started with flammable and combustible liquids and gases such as gasoline and paints. Class C – a fire started by energized electrical equipment such as power transmission cables or wiring.
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TYPES OF FIRE AND FIRE EXTINGUISHERS | WHICH FIRE EXTINGUISHER TO BE USED ON WHICH CLASSES OF FIRE Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher