Protecting your family and community: Safe generator use helps prevent re-energizing power lines
A simple installation mistake can send electricity onto power lines, creating serious risks for line workers, neighbors and loved ones
An improperly connected generator can re-energize power lines and create a potentially deadly hazard for utility workers, first responders and the public. As more homeowners and businesses install backup power and customer-owned generation technologies, it is critical proper steps are taken to prevent electrical "backfeed," a dangerous condition that can occur when electricity from a customer-owned generator or solar system unexpectedly flows back onto power lines or electrical equipment.
Power lines are often shut off for repair or replacement during outage events; however, an improperly connected generator can send electricity back onto those lines, creating a potentially deadly hazard for utility crews, first responders and the public.
Do not directly connect a gasoline-powered generator with a wall outlet in your home. A direct connection could result in voltage on utility lines and presents a significant safety concern for utility workers and generator owners.
"Most importantly, a generator should never be plugged directly into a household wall outlet,” said Tommie Bugett, director of safety for Ameren. "Backfeed from an improperly connected generator can energize power lines and equipment that people may believe are de-energized, putting utility crews, first responders and the public at risk."
For safe operation, customers should:
Never connect a gasoline-powered generator directly to a household wall outlet.
If powering a home during an outage, ensure the main breaker is turned off before operating a portable generator unless a properly installed transfer switch or generator interlock system is being used.
Follow all manufacturer instructions.
Use properly rated extension cords to run power directly from the generator outlets to individual appliances, bypassing home wiring.
If using a generator for backup purposes, have a qualified electrician install a transfer switch or generator interlock kit.
Ensure customer-owned generation equipment complies with applicable electrical codes and safety requirements.
Properly maintain generators, solar systems and battery storage equipment.
During outage restoration, Ameren employees may encounter generators, solar panels and battery storage systems connected to customer properties. Proper installation helps ensure those systems can be used safely while protecting utility workers and first responders working to restore service.
For customers looking to install backup generation, please visit Ameren.com and take the outlined steps.