Which materials are classified under Class A in fire hazards?

Materials classified under Class A fire hazards are those that produce ordinary combustibles. This category primarily includes solid materials like wood, paper, and textiles, all of which can easily ignite and contribute to the spread of fire due to their organic nature. These materials generally have higher ignition potential and can burn with significant heat and produce flammable gases when they combust.

In contrast, the other options include materials that do not fit into Class A due to their different compositions and burning behaviors. For instance, plastic and rubber can be classified under different categories depending on their specific characteristics, while metals and glass typically don’t burn and often fall under different fire classifications when analyzing fire hazards. Electronics and wires, while they can pose fire risks when malfunctioning or overheating, are not classified as Class A materials since they don’t fit the typical solid combustible criteria. Thus, the classification of Class A specifically pertains to materials like wood, paper, and textiles due to their combustible properties.