What is the exception for pumps with a capacity of less than 750 GPM regarding certification tests?

In the context of certification tests for fire service pumps, pumps with a capacity of less than 750 gallons per minute (GPM) are generally exempt from the pumping engine overload test. This exemption is crucial as the requirement to perform a pumping engine overload test is primarily intended for larger pumps that have the potential to exceed operational limits significantly without proper management.

For smaller pumps, such as those with capacities below the 750 GPM threshold, testing for overload conditions may not be as relevant or necessary due to their operational characteristics and risk factors. The focus for these pumps often centers on ensuring that they can adequately meet flow requirements, maintain system pressure, and operate effectively within their designed limits, without the added layer of concern that comes with managing higher volume situations.

This distinction allows for more streamlined testing procedures for smaller pumps while still ensuring they meet operational standards effectively.