Class C fires are fuelled by flammable gases such as methane, propane or butane.
The appropriate extinguisher used to tackle a class C fire is a ‘dry powder’ extinguisher.
What is a Class C fire?
A class C fire is an energized electrical fire. “Class C” is a term that distinguishes a fire from class A and class B fires. Class A is a category for fires consuming a source like fire or wood that can be extinguished with water, and class B fires are fueled by flammable liquids like gasoline.
Which is an example of a Class C fire?
A Class C fire is the burning of flammable gases, which can be very dangerous and highly explosive. These include gases such as butane and propane in gas canisters, which you’d expect to find in certain building trades.
What do you use for a Class C fire?
Fire extinguishers with a Class C rating are suitable for fires in “live” electrical equipment. Both monoammonium phosphate and sodium bicarbonate are commonly used to fight this type of fire because of their nonconductive properties.
What type of fuel is a Class C fire?
Class C fires are identified by the presence of a burning gas. The most common flammable gases involved in fires are propane, butane and methane, and they form the ‘fuel’ aspect of the fire triangle, which is required for the fire to start, spread and continue to burn.
What is a Class C fire rating?
Combustible materials are those that readily ignite and burn. A combustible material will be rated as Class A, Class B, or Class C based on its performance in this test. A material rated as Class A would have a lower flame spread, and therefore a better performance rating, than a Class C material.
How do you extinguish a Class C fire?
Carbon Dioxide fire extinguishers extinguish fire by taking away the oxygen element of the fire triangle and also be removing the heat with a very cold discharge. Carbon dioxide can be used on Class B & C fires. They are usually ineffective on Class A fires.
What is the symbol for a Class C fire?
Since the extinguisher is not recommended for use on Class C fires, the symbol on the far right (which depicts a Class C fire) is black, with a diagonal red line through it. The third set of symbols is a label for use on Class B/C extinguishers.
What are class AB and C fires?
These are fires whose fuel is flammable or combustible liquid or gas. The US system designates all such fires “Class B”. In the European/Australian system, flammable liquids are designated “Class B” having flash point less than 100 °C, while burning gases are separately designated “Class C”.
What are the 5 types of fire?
Classes of fire
- Class A – fires involving solid materials such as wood, paper or textiles.
- Class B – fires involving flammable liquids such as petrol, diesel or oils.
- Class C – fires involving gases.
- Class D – fires involving metals.
- Class E – fires involving live electrical apparatus. (