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Copyright © 2020
Centurion Fire Control
All rights reserved
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Types of Fire Extinguishers
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CLASS A |
CLASS B |
CLASS C |
CLASS D |
CLASS K |
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| TYPE |
Combustible
Materials
(eg Paper & Wood) |
Flammable
Liquids
(eg Butane & Methane) |
Electrical
Equipment
(eg Computers & Generators) |
Combustible
Metals
(eg Lithium &
Potassium) |
Deep Fat
Fryers
(eg
Chip Pans)
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Comments |
| WATER |
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Do Not Use
on liquid or
electrical
fires |
| FOAM |
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Not Suited to
Domestic
Use |
DRY
POWDER |
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Can Be Used
Safely up to
1000 volts |
| CO2 |
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Safe on both
high & low
voltage |
WET
CHEMICAL |
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Use on
extremely high
Temperatures |
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| Different fires result from varying sources, and thus should be handled accordingly. According to NFPA 10-2018, there are five primary classes of fire: |
| Class A: |
These extinguishers are used for ordinary combustible substances like paper, wood, plastic, cardboard, cloth and trash. |
| Class B: |
These devices are used for controlling fires caused due to flammable liquids like grease, kerosene, gasoline, paint, oil and so on. |
| Class C: |
Fires caused due to electrical devices can be extinguished using Class C extinguishers. |
| Class D: |
Sodium, magnesium and many other metals which are combustible in nature can cause fires at places like laboratories and factories. Class D extinguishers are meant for such places. |
| Class K: |
Used for fires caused by cooking oils, these extinguishers are found in restaurants and other commercial kitchens. |
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| Each class of fire is effectively put out by an extinguisher class with which it correlates, i.e. fire extinguishers with a Class A rating are effective against fires involving paper, wood and cloth. There is some variation to this, however, as addressed in the NFPA 10-2018 document. |
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