Preventing Electrocutions Associated with Portable Generators Plugged Into Household Circuits.
When power lines are down, residents can use another power source such as a portable generator to restore energy to:
Their homes
Other structures
If water has been present anywhere near electrical circuits and electrical equipment. Turn off the:
Power at the main breaker
Fuse on the service panel
Do not turn the power back on until electrical equipment has been inspected by a qualified electrician.
If it is necessary to use a portable generator, the following must be strictly followed:
Manufacturer recommendations
Specifications
If there are any questions regarding the operation or installation of the portable generator, a qualified electrician should be immediately contacted to assist in:
Installation
Start-up activities
The generator should always be positioned outside the structure.
Gasoline & Diesel Powered Portable Generators
When using gasoline- and diesel-powered portable generators to supply power to a building, switch the main breaker or fuse on the service panel to the "off" position prior to starting the generator.
This:
Prevents power lines from being inadvertently energized
Helps protect from possible electrocution, including:
Utility line workers
Other repair workers
People in neighboring buildings
If the generator is plugged into a household circuit without turning the main breaker to the “off” position or removing the main fuse, the electrical current could:
Reverse, go back through the circuit to the outside power grid
Energize power lines or electrical systems:
In other buildings to at or near their original voltage