What type of materials is a B:C fire extinguisher ineffective against?

Study for the Mississippi CDL Test. Prepare with flashcards and multiple-choice questions, each question featuring hints and explanations. Get ready for your Mississippi CDL exam!

A B:C fire extinguisher is specifically designed to combat fires caused by flammable liquids and electrical equipment, making it effective against those types of fires. However, it is ineffective against ordinary combustibles, such as wood, paper, cloth, and other materials that fall under class A fires. Ordinary combustibles require a different type of extinguisher, typically an A-rated extinguisher, which uses water or foam to smother the flames. Therefore, the focus of a B:C extinguisher is on the fire classes it is rated for, highlighting its ineffectiveness against materials that do not align with those classifications.

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