Question: What Causes A Class C Fire?

What would a Class C fire extinguisher used for?

A Class C fire extinguisher is used on fires that involve live electrical equipment, which require the use of electrically nonconductive extinguishing agents.

(Once the electrical equipment is de-energized, extinguishers for Class A or B fires may be used.).

What is the greatest danger in fighting an electrical fire?

Conductive substances such as water or foam can put the fire fighter at risk. When the source of electricity has not been cut off and water is sprayed into the flames, it can cause those electrical charges to spread and potentially create electrocution.

What is the symbol for a Class C fire?

Class C extinguishers do not have a numerical rating. The C classification means the extinguishing agent is non-conductive. The geometric symbol indicating Class C is a blue circle. Class D fire extinguishers are commonly found in a chemical laboratory.

What is a fancy word for fire?

SYNONYMS. blaze, conflagration, inferno, holocaust, firestorm. flames, burning, combustion.

What is the maximum distance between fire extinguishers?

75 feetSchools, churches, offices, and hotels are considered light hazard buildings with minimal fire risk. For Class A hazards, each extinguisher must be 2A or larger with a maximum travel distance of 75 feet between extinguishers.

How do you stop an electrical fire?

If an electrical fire starts If the device that is causing the electrical fire is found, and you can reach the cord and outlet safely, unplug it. 2. Add sodium bicarbonate. If the fire is small, you may put it out by smothering it with baking soda.

What is the Colour code for fire extinguishers?

Fire extinguisher colour coding Water fire extinguishers are colour coded red. Foam fire extinguishers are colour coded in cream. Powder fire extinguishers are colour coded with blue. Carbon dioxide fire extinguishers are colour coded with black.

What is tetrahedron of fire?

A tetrahedron can be described as a pyramid which is a solid having four plane faces. Essentially all four elements must be present for fire to occur, fuel, heat, oxygen, and a chemical chain reaction. … Each of the four sides of the fire tetrahedron symbolise the Fuel, Heat, Oxygen and Chemical Chain Reaction.

What is C class fire?

Class C is a fire involving energized electrical equipment where safety to the employee requires the use of electrically nonconductive extinguishing media. … Types of fire extinguishers used to extinguish a class C fire: Carbon dioxide (CO2) extinguisher.

What are the 4 types of fire?

Classes of fireClass 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. (More items…

What are the 5 classes of fire?

Fires can be classified in five different ways depending on the agent that fuels them: Class A, Class B, Class C, Class D, and Class K. Each type of fire involves different flammable materials and requires a special approach.

What are the symbols of fire extinguishers?

The geometric symbol is the green triangle and the pictograph shows ordinary trash and wood on fire. Class B – for fires involving flammable or combustible liquids, like gasoline, kerosene, grease or oil. The geometric symbol is the red square and the pictograph shows a fuel can in flames.

What is Class A Class 1 fire rating?

With a flame spread of 25 or less, cellulose has a Class 1 Fire rating. Walls with cellulose insulation are one-hour (or greater) fire walls and can help control the spread of fire.

What are the different sizes of fire extinguishers?

Here are some common fire extinguisher sizes and their corresponding weights:2A:10B:C – 4 lbs.3A:40B:C – 5 lbs.4A:60B:C – 10 lbs.10A:80B:C – 20 lbs.

What puts out a Class C fire?

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. Don’t use water.

What is the best fire extinguisher to use on a Class C fire?

Carbon Dioxide (CO2) extinguishers are most effective on Class B and C (liquids and electrical) fires. Since the gas disperses quickly, these extinguishers are only effective from 3 to 8 feet.

What are the six classes of fire?

There are 6 different classes of fire, and each should be attacked in a different way.Class A (Solids) Class A fires are fires involving solids. … Class B (Liquids) Class B fires are fires involving liquids. … Class C (Gases) … Class D (Metals) … Electrical Fires. … Class F (Cooking Fats & Oils)

What is an example of a Class D fire?

A Class D fire is characterised by the presence of burning metals. Only certain metals are flammable and examples of combustible metals include sodium, potassium, uranium, lithium, plutonium and calcium, with the most common Class D fires involve magnesium and titanium.

What does DTR mean on fire extinguishers?

5 yearly dischargeFire Extinguishers need regular checks (which you could and should do yourself) and they need an annual service, a 5 yearly discharge (or DTR) on all but Carbon Dioxide.

Which fire extinguisher is not suitable for electrical fire?

Water fire extinguishersWater fire extinguishers have a class A rating and are safe for use on wood, paper and fabric fires. Water fire extinguishers are NOT suitable for electrical fires as water is a conductor and you are at risk of electrocution if used on this type of fire.