From The Building Department
Released: 2/1/2010
Print   Close
Emergency Generators:
Many persons have opted to purchase emergency generators for home use. In a power outage, emergency generators can be a highly effective resource to maintain critical electrical systems. However, if not installed properly, that being in accordance with Article 700 of the National Electrical Code, they can cause a dangerous condition. There are basically two types of generators, Portable and Fixed.
Portable Generators:
Portable, gasoline-driven generators are designed to be used with appliance or other cords connected directly to them in accordance with the output rating of the generator. They should have no direct or indirect conection to an electrical service.
Fixed Generators:
Larger fixed emergency generators are generally directly connected to a building electrical service to provide power during an electrical outage. Fixed generators connected to a building electrical system require obtaining an electrical permit, and installation by a licensed and registered electrical contractor.
Improperly connecting an emergency generator to the building electrical system can produce back feed, a dangerous current that can critically injure or electrocute you or others. An electrical company lineman working to restore power on a line he believes to be de-energized could be injured due to back feed from your generator.
If you have or had installed a fixed generator without benefit of a permit by a licensed contractor or inspection, we recommend that you have a qualified electrician examine your system to determine compliance with the National Electrical Code. And in all cases, take the time to read all safety and instructional material that should have come with your generator.
For more information, please call the Lyndhurst Building Department at (440) -473-5108.

Information provided by:
The City of Lyndhurst, Ohio @