Is it true or false that two 2 1/2 extinguishers can fulfill the requirement of one 4-A rated extinguisher?

The assertion that two 2 1/2 extinguishers can fulfill the requirement of one 4-A rated extinguisher is indeed true. This is based on the ratings given to fire extinguishers, where the numerical value in the classification indicates the amount of fire hazard they can effectively extinguish. A 4-A rated extinguisher can put out fires involving ordinary combustible materials and is capable of handling more intense fires compared to lower-rated extinguishers.

When considering the equivalent effectiveness for a fire rated between 2 and 4, two extinguishers rated at 2-1/2 provide a combined rating of 5, thus meeting and exceeding the requirement for extinguishing the type of fire associated with a 4-A rating. This demonstrates that using multiple extinguishers can effectively provide the same level of fire protection as a single higher-rated unit, making the assertion accurate in fulfilling fire safety requirements.