After last year’s barrage of storms, we’re seeing more cooperative members inquiring about the use of emergency back-up generators. Generators can be a lifesaver; however, it is crucial to use generators safely to protect the lives of line workers or electricians and to prevent potential hazards. One major risk associated with generators is back feed, which poses a significant danger to electrical workers. We’ve identified two essential ways to avoid this potential danger.
Understanding Back Feed
Let’s first dive into what back feed is and when it might possibly occur. Back feed is when electrical power is unintentionally sent back into the utility lines from a generator or another power source. This can happen if a generator is not property isolated from the utility grid. The electricity produced from a generator can flow through the lines, potentially electrocuting line workers who are working to restore power and believe the line is de-energized. This inadvertent flow of electricity is extremely hazardous and can result in severe injuries or even fatalities. In addition, if a generator is not isolated property, back feed can happen when power is restored causing damage to the generator or homes wiring.
Avoiding Potential Back Feed
- Install a Transfer Switch (Double-pole, double-throw, or a two-way transfer switch): A transfer switch is a device that allows you to switch between utility power and generator power. It ensures that the generator is safely isolated from the utility lines, preventing potential back feed. A licensed electrician should be consulted for the installation and proper wiring of a transfer switch.
- Use Individual Circuits of the generator: By connecting essential appliances or equipment directly to the generator using heavy-duty extension cords, you can ensure that the power generated does not flow back into the utility lines. Do not plug the generator directly into an outlet to power your home. To ensure safety, the load rating of the cord must be more than the sum of the power consumed by the appliances, it should contain a grounding prong and there is no damage to the coating and insulation of the wiring.
Safety should always be a top priority, especially when using generators during power outages. Understanding the dangers of back feed and taking appropriate precautions can significantly reduce the risks faced by lineworkers. By following these safety measures, we can make power restoration efforts safer and more effective for everyone involved. Remember, a little caution can go a long way in protecting lives and preventing accidents during challenging times. Check out this post on Playing It Safe: 10 Do’s and Don’ts When Using Portable Generators for a broader range of how to use generators safely.