Correct as they may not displace enough O2 to put the fire out-causing it to reignite.
ABC, BC or C. It is often best to disconnect the electrical power and use an extinguisher appropriate for whatever type of fuel happens to be burning (A or B). Do NOT use a water-type A fire extinguisher on an energized electrical fire.
Burning liquid fires require a U.L. Class B fire extinguisher, or ABC, or BC.
Electrical fire is Class C as long as the electricity is on, so use a BC or ABC extinguisher, either dry chemical, carbon dioxide gas or halogenated gas.
A shoe factory is likely to have Class B hazards requiring an ABC or BC type of fire extinguisher.
As per Americal standard CLASS C is for electrical fire but in british standard it is not there because technically Electrical fire is not applicable since it will turns to CLASS A fire once it happened. so Dry Powder extinguisher is enough to extinguish the same.
A Class A, B, C, or ABC fire extinguisher works wonders on several different types of fires. A is good for wood, paper, etc. B is good for liquids. C is good for electrical fires. Do not use a Class D, for these are best on metals (such as magnesium).
Class b
B-I
A tight-fitting lid, a fire blanket, a box of sodium bicarbonate or salt may work, but a type ABC fire extinguisher would be best. Turn off the electric source as well. Under NO circumstances use a water-type (often class A) on a hot oil fire or on an energized electrical device.
Anything other than water can be used on an electrical fire. These are often indicated on fire extinguishers as Class ABC or BC or even just C, where class C refers to fires caused by energized electrical conductors.
Class C is never seen alone, as it is not a fuel type. Rather it is a complicating factor in fighting a fire of another type, as it means that the fire contains energized electrical components. A fire extinguisher marked with class C simply means that the extinguishing agent will not carry electricity and shock you or others in the area. Dry chemical extinguishers are available in ABC and BC flavors. Carbon dioxide extinguishers are rated BC. Water mist extinguishers are rated AC, but are rather rare outside of hospitals.
Foam fire extinguishers are used mainly for flammable liquid fires and are mostly used by professionals and in commercial and industrial settings. These extinguishers are charged with anther AFFF, FFFP, or AR-AFFF, however, these class of extinguishers are only rated class A & B fires and are hazardous to the environment, humans and animals in addition to being very corrosive.