Only B/c extinguishers containing the dry chemicals sodium bicarbonate or potassium bicarbonate should be used on what type of fire?

Question

Henry Antrim · Accepted Answer

B C extinguishers are to be used on flammable liquids (B), and electrical equipment (C).

The B in BC extinguishers indicates that they are intended to be used only on fires in the kitchen (or laboratory) or in a car that involve flammable liquids like paint, kerosene, oil, or gasoline. Fire extinguishers marked with a C are intended for use on electrical fires, such as those that may arise from hot plates, electrical burners, or computer equipment. What do the ABC ratings on fire extinguishers mean? https://tutor.hix.ai

Luna Chen · Answer

Class B and C fire extinguishers are designed primarily for flammable liquids (Class B) and electrical fires (Class C).

The chemical reason for the designations is the ability of the compounds to decompose into carbon dioxide to smother a fire without either causing splashing (liquids) or reactivity (electrical) that would occur with a water fire extinguisher. Other suitable compounds used in these Classes are carbon dioxide, Halon (discontinued) and foam. Both may also be used for combustible solids (Class A), but may not be as effective as a Class A extinguisher. They should not be used for Class D (flammable metals). NOTE that the CODE CLASSES are slightly different in the UK with more subdivisions. The U.S Code is here: https://tutor.hix.ai Explanation here: https://tutor.hix.ai The UK Code is here: https://tutor.hix.ai

Peyton Adams · Answer

undefined Only B/C extinguishers containing the dry chemicals sodium bicarbonate or potassium bicarbonate should be used on flammable liquid fires and electrical fires.