What is NOT a condition that must be met for effective extinguisher use?

The necessity for an extinguisher to have a high capacity is not a condition for effective use. While having an appropriately sized extinguisher matters, it is not the sole determinant of its effectiveness. The key factors center around whether the extinguisher meets specific requirements established by standards such as NFPA 10, whether it is the correct type for the material involved in the fire, and whether the fire is small enough to be managed with a portable extinguisher.

The focus of effective extinguisher use should be on having the right equipment that is compliant with safety regulations and is designed for the specific fire class. Furthermore, discovering the fire while it is still small is crucial, as larger fires may be beyond the handling capability of most portable extinguishers, regardless of the extinguisher's capacity. Hence, while having a high-capacity extinguisher can be beneficial, it is not a fundamental condition for effective use in extinguishing a fire.