How to Turn Off a Generator During a Power Outage
A proper generator shutdown procedure helps protect your standby generator and ensures it is ready to provide backup power when you need it again. If you're wondering how to turn off a generator during an extended outage, it’s important to follow the correct sequence rather than simply switching the unit off while it is carrying your home's electrical load.
Many homeowners looking for the best generator for home power outage protection also want to know how to turn generator off systems safely. The exact instructions can vary by manufacturer and model, so always follow your generator owner's manual when it differs from these general steps.
For many standby generator systems, the shutdown process includes:
- Turn the generator main circuit breaker OFF.
- Allow the generator to run for one minute without load to cool down.
- Turn the Auto/Off/Manual switch to the OFF position.
- Check the oil level and add if needed.
Allowing the unit to briefly run without an electrical load gives the engine an opportunity to cool before shutdown. Avoid performing maintenance while the generator is hot, and never work on electrical or mechanical components unless you are qualified to do so.
If the oil level is low, add some of the manufacturer’s recommended oil. We suggest keeping two quarts on hand in case you need it. Always verify the appropriate oil type and level for your specific generator before adding anything to the system.
Homeowners asking how to turn off generator equipment should also remember that standby systems are designed differently from portable generators. Never assume that the shutdown procedure for one generator applies to every model.
How to Restart a Generator During a Power Outage
After completing the generator shutdown procedure for inspection, maintenance, or another reason, you may need to restart the system while utility power is still unavailable.
For many automatic standby generators, the general restart process is:
- Turn the Auto/Off/Manual switch back to Auto. After a brief delay, the generator will start if the utility power is still out.
- Allow the generator to warm up for one minute.
- Turn the generator main breaker back on. Once the utility power is restored, the generator will automatically turn itself off.
Giving the engine a brief warm-up period before restoring the electrical load can help the unit transition back into normal operation.
If you own a Generac system and need to turn off a Generac generator or restart it during an outage, consult the operating instructions for your specific model. Control panels and operating sequences can differ between generator generations and configurations.
Never repeatedly switch a generator on and off in an attempt to correct a fault. If the unit displays an error message, fails to start, or behaves differently than expected, professional service may be needed.
How to Turn Off a Generator When the Power Comes Back On
A common question from standby generator owners is: does a generator automatically turn off when utility power returns? In most properly operating automatic standby systems, the answer is yes.
Most standby generators have an automatic transfer switch. This switch monitors utility power and transfers your home's electrical load to the generator when an outage occurs. When stable utility power returns, the system transfers the home back to the electrical grid and allows the generator to complete its normal shutdown sequence.
As long as the system is set to “AUTO” and operating correctly, your generator should turn off automatically as needed. This also answers another common question from owners: will my Generac turn off automatically? A properly configured automatic Generac standby system is designed to detect restored utility power and transition back according to its operating sequence.
If your generator doesn’t turn off automatically, avoid repeatedly changing switches or disconnecting components without knowing why the system is still running. You can turn your generator off manually when appropriate by turning the generator main circuit breaker to OFF and allowing the generator to run briefly without load to cool down. Then, turn the switch in the control panel to the OFF position, following the instructions for your particular model.
If your Generac generator won't shut off after utility power has returned, there may be an issue involving the automatic transfer switch, utility sensing, control system, wiring, or another component. A generator that continues running unexpectedly should be inspected rather than ignored.
Reach out to your local Generac authorized service provider for repairs. You may have a faulty automatic transfer switch or other electrical issues.
Following the correct generator shutdown procedure is especially important when troubleshooting a system that is not behaving normally. When in doubt, use the manufacturer's instructions and contact a trained generator technician.
Schedule Generator Service
Having trouble with your generator? Reach out to the experienced team at Home Power Systems.
We have over two decades of experience repairing and servicing Generac, Kohler, and Cummins generators. Whether you need help understanding how to turn off a generator, your system will not restart, or your standby generator continues running after utility power returns, our technicians can diagnose the issue and recommend the appropriate solution.
Regular maintenance can also help prevent unexpected problems during an outage. A professional inspection gives technicians an opportunity to check the generator, transfer switch, battery, fluid levels, electrical connections, and other important components before severe weather puts your backup power system to the test.
Plus, we’re available for repairs 24/7, so you’re never left without power for long.
Call 716-314-1743 for service.
