Final answer:
The 5 second generator load limit concerns the maximum amount of electrical power a generator can provide in 5 seconds, generally set for safety to avoid damage or overheating.
Step-by-step explanation:
The student's question about the 5 second generator load limit appears to be related to the specific operational capabilities of an Auxiliary Power Unit (APU) or another type of generator system rather than a physics concept directly discussed in your provided reference information.
Given the context of APUs used in aviation or other industries, the 5 second generator load limit refers to the maximum amount of electrical power the generator can provide in a short 5 second duration without causing damage or overheating due to safety regulations. It is difficult to provide an exact number without a direct reference to a particular APU's specifications; however, such a limit is generally set to prevent exceeding the system's designed capabilities, taking into account safety margins like the ones mentioned where continuous use is limited to 80% of the breaker current capacity.