A portable generator can serve as a vital resource in the event of a power outage. If you have limited experience with them, it is understandable to have questions. This guide provides essential information for safely and confidently using your portable generator at home, whether you need to power a few essential devices or operate an entire home through a professionally installed interlock system.

Understanding Your Setup

Before operating your generator, it is imperative to understand how your home is configured for backup power. At Nelson Electric & Air, many clients utilize:

• A 240V generator inlet installed outside the home
• A manual interlock switch located within the electrical panel
• A portable generator (30A or 50A), typically powered by gasoline or propane

This setup allows for the safe backfeeding of selected circuits in your home without using hazardous extension cords, minimizing the risk of damage to appliances or the power grid. It is essential to avoid plugging a generator into a wall outlet, known as backfeeding without proper protection, as it poses significant dangers and is illegal.

Step-by-Step Instructions for Operating a Portable Generator

1. Choose a Safe Outdoor Location

• Position the generator at least 10-20 feet from the house.
• Ensure it is placed on a dry, level surface like a driveway or patio.
• Confirm that the exhaust is directed away from windows, doors, and ventilation systems.
• Never run your generator in enclosed garages or sheds, as carbon monoxide is odorless and lethal.

2. Check Fuel and Oil Levels

• Utilize fresh, stabilized fuel, particularly gasoline, as it deteriorates quickly.
• Verify that the oil is clean and filled to the appropriate level.
• Inspect for any leaks or damage before each use.

3. Start the Generator

• Open the fuel valve (if equipped).
• Set the choke to “ON” for cold starts.
• Switch the engine to the “RUN” position.
• Start the engine using either the electric start or pull cord.
• Allow the generator to run for a minute before connecting any loads.

4. Connect to Your Home Safely

If using a generator interlock kit and 240V inlet:

• Plug the generator cord into the outdoor inlet.
• Turn off your main breaker.
• Engage the interlock tab to access the generator breaker.
• Turn the generator breaker on.
• Power essential circuits one at a time.
• This configuration allows for the operation of select circuits, such as the refrigerator, heat, lighting, and sump pump, without risking generator overload.

5. Monitor Operation

• Do not allow the generator to run out of fuel while under load, as this can damage appliances.
• Don’t use the generator in wet conditions unless it has a weather-rated cover.
• Check fuel and oil levels every 4–6 hours.
• Turn off high-demand loads before refueling.

6. Proper Shutdown Procedures

When ready to power down:

• Turn off all loads within the home.
• Deactivate the generator breaker in the panel.
• Allow the generator to run for 1-2 minutes without load.
• Turn the engine off.
• Close the fuel valve.
• Let the generator cool before storing or refueling.

Essential Generator Safety Tips for Homeowners

• Carbon monoxide can be deadly: Use a battery-powered carbon monoxide detector near sleeping areas.
• Store fuel safely: Keep it in an approved container and away from potential ignition sources.
• Avoid plugging directly into home outlets.
• Refrain from using extension cords; utilize a properly installed inlet or heavy-duty outdoor cords.
• Ensure that your generator cords match the output rating (30A or 50A).

Maintenance Checklist

To ensure your generator remains reliable throughout the year:

• Start and run your generator for 10-15 minutes once a month.
• Change the oil after every 25-50 hours of usage.
• Keep fuel fresh by adding a stabilizer.
• Keep the generator in a dry, clean, and protected environment.

How Nelson Electric & Air Can Assist

We simplify the ownership and operation of portable generators, ensuring our client’s safety and peace of mind in Londonderry and Southern New Hampshire. Our services include:

• Expert installation of generator inlets and interlock systems
• Customized recommendations for 30A and 50A units
• Comprehensive walkthroughs on proper operation
• Ongoing support during critical weather events

Call or text 603-899-7340 for more information, or visit our website at www.nelsonelectric-ne.com.

Be Prepared Before the Next Storm

Understanding how to operate your portable generator is just as crucial as possessing one. With the correct configuration and preparation, you can ensure your home’s safety and comfort regardless of weather conditions. For those searching for electrical companies in NH or electrical contractors near them, we are here to assist in getting your home equipped before the power goes out.