CO2 extinguishers should be required in places where there is a risk of electrical fire, such as offices, schools, and shops. A yellow label that indicates “wet chemical fire extinguisher” can be used to identify a wet chemical fire extinguisher “Chemicals that are moist. Wood, paper, and fabric fires can all be put out with wet chemical …
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 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.
ANS) water type, foam type and wet chemical type of Fire Extinguishers are not to be used on Electrical equipment as they conduct electricity back and cause shock to the person who is using it. Billy Webb. Fire Inspector at Texas (state) (1996–present) Author has 646 answers and 479.7K answer views 3 y.
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Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher