Generator starts and transfers, but then drops load and shuts down after a few minutes.

Safety first: Avoid repeatedly restarting the generator under fault conditions. Open the generator output breaker and ATS before inspection.

Steps:

• Check load size: Add up the wattage of major loads running during outage. Compare to the Eaton generator’s rated output. Turn off nonessential loads and high inrush devices.
• Inspect airflow: Ensure at least the manufacturer-recommended clearance around the enclosure and that louvers are not blocked.
• Check main breaker: Inspect the generator’s main breaker for signs of overheating or mechanical weakness. Replace if it trips at currents below rating.
• Retest: After reducing load and correcting airflow, run the generator again. If it still shuts down, review controller logs for specific fault codes and have a technician test alternator and protection circuits.