They CANNOT be used on electrical or flammable metal fires since the extinguisher may worsen the situation. Foam extinguishers are appropriate for a variety of fire-prone environments, such as offices, factories, warehouses, and hotels. A black label saying CO2 fire extinguisher can be spotted “CO2 is a greenhouse gas.
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. They are also NOT suitable for flammable liquids or flammable metal fires as it will not extinguish the fire. What Colour fire extinguisher is not suitable for electrical fire?
What Fire Extinguisher Do You Not Use On Electrical Fires?
This type of fire extinguisher should not be used to put out fires involving electrical equipment with a voltage greater than 1000 volts or fires with frying oil. This sort of fire extinguisher is necessary in places like garage forecourts, welding and flame cutting shops, and buildings with big boiler rooms that use flammable gases for chemical processes.
This fire extinguisher should not be used to put out fires caused by combustible metals, kitchen fires, or electrical equipment fires. These fire extinguishers function by cooling the fuel that is causing the flames. The fire is quenched when it is poured on a burning liquid because the foaming agent creates a barrier between the fuel and the flame.
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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