Power hopefully is removed so the fire cannot get bigger.
Now..... Don't use water!! Use sand ..... i think that heat is removed
Probably the insulation from the wire, if this is the train of thought that you are thinking.
fire is removed and small pieces of fire petrol are covered with the fire extinguisher.
Yes and No! Electrical fires are not really fires, the electrical sparks cause the ignition of the combustibles around it. Thos fires can have a blanket used in their extinguishment. The power source needs to be removed to stop the sparking.
An electrical fire is a class "C" fire. A Class "C" fire is actually a class "A" or "B" fire that is caused by electrical current.
The device that protects the home from the start of an electrical fire is an electrical breaker or in some older homes a fuse system.
A Class C fire extinguisher.
A class C fire is an electrical fire. A class C extinguisher is approved for electrical fires.
An electrical fire is a class 'C' fire. In addition, Class 'A' is combustibles that leave an ash. (Paper, etc.) Class 'B' is flammable liquids. Class 'C' is electrical. Class 'D' is a metal fire.
Neither a gasoline or electrical fire should be put out by water. A gasoline fire should be put out by a fire extinguisher labeled A B C. An electrical fire should first have the power switched off. Then the fire extinguisher should be used.
This is a building code question, not an electrical code question. In my experience, switch gear rooms are protected by sprinklers just as any other room. I know that doesn't sound right, but it is what it is.