Under what condition should CoF holders consider using a portable fire extinguisher?

Using a portable fire extinguisher is appropriate when the fire is small and manageable. This condition is crucial because portable fire extinguishers are designed for tackling small fires that can be extinguished quickly before they escalate. If the fire is small and contained, an individual trained in how to use the extinguisher can potentially put it out without risking injury or creating additional hazards.

The emphasis on the fire being manageable is key; if the fire is too large or spreading quickly, trying to use an extinguisher can be dangerous and ineffective. Therefore, ensuring that the fire is at a controllable size is a fundamental consideration for the safe and effective use of this firefighting tool.