Master streams must be delivered by which type of equipment capable of delivering more than what rate?

Master streams are high-capacity fire suppression devices designed to deliver large volumes of water quickly and efficiently to combat significant fires. According to the NFPA 24, these systems must be capable of delivering water at a rate that ensures effective firefighting operations.

A delivery rate of 250 gallons per minute (GPM) is the minimum threshold established for master streams. This rate is sufficient for the effective application of water over larger areas and is considered necessary for managing larger-scale fire emergencies, such as those often encountered in commercial or industrial settings.

While options mentioning larger flow rates like 350 GPM or 500 GPM could also be capable of delivering adequate fire suppression capabilities, the requirement specifically defines 250 GPM as the minimum acceptable rate for master streams, making it the correct choice in this context.