What fire extinguisher should not be used on electrical 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. They are also NOT suitable for flammable liquids or flammable metal fires as it will not extinguish the fire.
Which type of fire extinguisher must not be used on electrical equipment?
Water jet extinguishers
work by spraying a jet of water at the burning materials, cooling them and preventing re-ignition. They should not be used on live electrical equipment.
What 2 types of fire extinguisher should never be used on an electrical fire?
Never use a
water fire extinguisher
on an electrical fire (Class C), which can cause you to electrocute yourself. Using a water fire extinguisher on fire caused by a flammable liquid, such as oil or gasoline (Class B), can cause the fire to flare and spread.
What should not be used in electrical fire?
As water and foam have the ability to conduct electricity, even after the power source has been cut off, you should not attempt to apply
water or foam extinguishers
to the flames. Carbon Dioxide and dry powder fire extinguishers are the only types of fire extinguishers recommended for tackling electrical fires safely.
Which fire extinguisher is unsuitable for electric fire?
In the case of electrical fires, also known as energized electrical fires, a
class C
fire extinguisher is needed to put it out.
Why CO2 extinguisher is used for electrical fires?
(flammable liquid and electrical) fires only.
Carbon dioxide extinguishes work by displacing oxygen, or taking away the oxygen element of the fire triangle
. The carbon dioxide is also very cold as it comes out of the extinguisher, so it cools the fuel as well.
What is a CO2 fire extinguisher used for?
CO2 fire extinguishers are
mainly aimed at electrical fires but are also suitable for Class B liquid fires
and are used in different ways depending on the type of fire they are being used on. Do not use CO2 extinguishers in small rooms as CO2 gas is poisonous at only 4% concentration and can kill at just 8%.
Which 2 types of fire extinguisher should you use on live electrical equipment?
Use: Carbon dioxide fire extinguishers are ideal for environments at risk of electrical appliances (Class E) and also fires involving flammable liquids (Class B).
How do you extinguish electrical fire?
- Call the fire department. First of all, inform the firefighting professional services. …
- Turn off the fuses. …
- When the fire is small: some sodium bicarbonate, a blanket. …
- When the fire is large: CO2 fire extinguisher (carbon dioxide) or Dry powder fire extinguisher (ABC).
Can water extinguisher be used on electrical fires?
Water mist extinguishers are safe and well suited for use on burning electrical equipment
as the de-ionised water mist does not conduct electricity and the water mist does not form puddles which could lead to electrocution.
Which type fire extinguisher may damage electronic components?
Class C fires involve energized electrical equipment, such as appliances, switches, panel boxes, power tools, hot plates and stirrers. Water can be a dangerous extinguishing medium for class C fires because of the risk of electrical shock unless a specialized
water mist extinguisher
is used.
When should a CO2 fire extinguisher not be used?
Carbon dioxide fire extinguishers, when used in the right circumstances can save lives. However, it would be dangerous to use a carbon dioxide fire extinguisher
when dealing with flammable gases, cooking oils and fats, or in a confined space
.
What are the 4 types of fire extinguishers?
There are four classes of fire extinguishers –
A, B, C and D
– and each class can put out a different type of fire.
What are the 4 types of fire extinguishers and their uses?
- Class A fire extinguisher – water, water mist, foam, dry powder, wet chemical.
- Class B fire extinguisher – water mist, foam, dry powder, CO2, some wet chemical.
- Class C fire extinguisher – water mist, dry powder.
- Class D fire extinguisher – specialist dry powder.
What is the difference between ABC and CO2 fire extinguisher?
CO2 extinguishers work primarily for Class B fires, but can also fight Class C fires
. Class B fires are powered by flammable gases and liquids, like paint and fuel. To put out Class B fires, a CO2 extinguisher deploys gusts of pressurized CO2 to displace the oxygen and put out the fire.
Which is a disadvantage of CO2 extinguishers?
Disadvantages Of Carbon Dioxide Extinguishers
As CO2 works by displacing the oxygen around the fire, it is
not suitable for outdoor use, or in environments exposed to windy conditions
. CO2 is a high pressured extinguisher. Using it on class A fires or class F fires could cause the fire to spread.
Which fire extinguisher is used for electrical equipment?
Which extinguishers are suitable for electric equipment? Traditionally,
CO2 extinguishers
are used for electric equipment, as the CO2 gas does not carry electricity.
Can you use an ABC fire extinguisher on electrical fires?
Class C fires are electrical fires.
Use a Class C or Class ABC fire extinguisher on these types of fires
. Do not use a Class A fire extinguisher on this type of fire. You must disconnect the power source to eliminate these types of fires.
What should a fire extinguisher never be used on?
Water should never be used on
electrical fires
because of the shock hazard. Class D fires involve certain combustible metals, such as magnesium, titanium, potassium, and sodium. These metals burn at temperatures high enough to pull oxygen out of other materials sufficient to support combustion.
Can you use dry chemical on electrical fire?
The dry chemical fire extinguishers are able to put out fires caused by oil, textiles, paper, liquid, and electrical issues
. This is the perfect fire extinguisher to have on hand to take care of a variety of fires safely and efficiently.
Which type of fire extinguisher is used for electrical fires quizlet?
Class C
fire extinguishers are used on fires involving energized electrical equipment. Such fires must be extinguished using a non-conductive extinguishing agent such as carbon dioxide or a dry chemical.
What are the 5 types of fire extinguishers?
- Class A Fire Extinguishers. Class A fire extinguishers are safe for use on ordinary combustible fires, like those fueled by paper or wood. …
- Class B Fire Extinguishers. …
- Class C Fire Extinguishers. …
- Class D Fire Extinguishers. …
- Class K Fire Extinguishers.
Which type of fire extinguisher is best for expensive electrical equipment or chemical fires?
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.
Clean Agent Fire Extinguishers
It is suitable for A, B, C classes and electrical fires. It uses a Non-Corrosive, Odourless, colourless and non-residual clean agent. These are available in various capacities.
What is a white label fire extinguisher for?
They are a red cylinder with a white band or label. These are the most common fire extinguishers used in domestic settings as they can be used for
fires involving cooking oils and fats as well as electrical fires
.
Which two fire extinguisher should not be used in confined spaces?
It is advised not use a
CO2 fire extinguisher
in a confined space, as it displaces oxygen and could lead to asphyxiation.
Which type of fire extinguisher is used for electrical equipment?
CO2 fire extinguishers are predominantly used for electrical fire risks and are usually the main extinguisher type provided in computer server rooms. They also put out Class B fires (flammable liquids, such as paint and petroleum).
Which types of fire extinguisher should you use on live electrical equipment?
Use:
Carbon dioxide fire extinguishers
are ideal for environments at risk of electrical appliances (Class E) and also fires involving flammable liquids (Class B).
Which one of the following must not be used on fires involving live electrical equipment as it can cause electrocution?
(a)
Water
is not used to control fires involving electrical equipment.
