Skip to Content

This site is an affiliate for companies including Amazon Associates and earns a commission on qualifying purchases.

How Long Can a Generator Cord Be?

How Long Can a Generator Cord Be?

Generator cords come in a variety of sizes and styles, but they all have one thing in common: There’s a limit to how long they can be. So what’s the ideal length for a generator cord?

A generator cord has a maximum length of one hundred feet (30.5 m). An increase in length often results in lower amperage and voltage. Therefore, the longer the cable, the more likely you will encounter issues. These issues can be mitigated, however.

This article will help you understand the different factors affecting how long a generator cord can be and some tips for using it safely.

What Is a Generator Cord, and What Are Its Uses?

A generator cord is a heavy-duty extension cord that connects a portable generator to your home’s electrical panel. This allows you to power your home in a power outage. Generator cords come in different gauges, so you can choose the one that best suits your needs. 

However, it’s important to note that the gauge you choose can affect its amperage and voltage.

For example, a 14-gauge cord can carry up to 15 amps and 125 volts, while a 10-gauge cord can carry up to 30 amps and 250 volts. This means you can power more appliances with a 10-gauge cord, but it’ll be more expensive.

As you can see, there’s an indirect relationship between the cord’s gauge and its amperage and voltage. So, when you’re buying a generator cord, take note of these crucial numbers before you hit the “Buy” button. 

The Ideal Length of a Generator Cord

There are a few factors that will affect how long your generator cord can be, such as:

  • Type of generator. If you have a portable generator, you’ll need a shorter cord than if you have a stationary generator.
  • The number of watts. The higher the wattage, the shorter the cord you’ll need.
  • The cord gauge. A thicker cord can carry more current and can be longer than a thinner cord.

To better illustrate how long a generator cord should be, I’ll give you a couple of hypothetical examples based on the type of generator you have.

Ideal Length of a Stationary Generator Cord

Let’s say your shed is 50 feet (15 m) away from your house, and you want to power some lights and maybe a fridge. You could theoretically buy a 30-foot (9.14-m) generator cord, plug it into your generator, and have enough length to reach the breaker box. 

The issue with this setup isn’t just the obvious length difference. You also have to consider the number of watts your generator can handle. A typical generator puts out about 7,500 watts (or 30 amps at 240 volts). So if you’re running a fridge, which can use about 1,000 watts, and four 100-watt lightbulbs, you’re using about 1,500 watts or about 6 amps. 

Therefore, you should install a 50-foot (15 m) 10-gauge extension cord that can handle that much current with no problem.

Ideal Length of a Portable Generator Cord

Again, let’s say you have a portable generator that produces 5,000 watts of power, and the distance from the shed to the house is 20 feet (6 m). You’ll need a shorter cord than if you had a stationary generator because portable generators can be moved. 

A 10-gauge, 100-foot (30.5-m) cord would be too much cord for the distance, and it would also be overkill for the amperage. A 14-gauge, 15-foot (4.57-m) cable would be the best option for this setup.

How To Use a Generator Cord Safely

Now that you know how long a generator cord can be, here are some tips for using them safely:

  • Read the manual. This will ensure that you’re using it correctly and safely.
  • Inspect the cord. If you see any fraying or cracks, do not use the cable. Replace it with another cable that’s been tested at the store and has little to no signs of damage.
  • Use the correct gauge. Make sure to use a cord with the correct gauge for your needs. A thicker cable can carry more current and be more expensive than a thinner cord.
  • Don’t overload the cord. Plugging in too many appliances can cause overheating and potentially start a fire. In other words, avoid using “octopus” outlets if possible.
  • Don’t use it in wet conditions. Otherwise, you’ll cause a short circuit and maybe even start a fire.

You can safely use a generator cord to power your appliances in a power blackout by following these tips. They also come in handy in a camping situation or if you live in an RV.

The Risk of Using a Long Generator Cord

Although using a long generator cord is okay, there are some risks that come with it. For example, you may trip over the line, which could result in injuries. Also, the cord can shock you if it’s not adequately insulated. And if you have a long line, it’s important to check it often to ensure it isn’t getting too hot. If it is, unplug it and let it cool down before using it again.

Then there’s the issue of voltage drop. This occurs when the current flowing through the cord meets too much resistance. The result is a reduction in voltage that gets worse the longer the cord is. If you have appliances sensitive to voltage fluctuations, they may not work properly if there’s power instability.

Also, if you notice your lights dimming or flickering, it may be due to a voltage drop. You can use a thicker cord or multiple cords in parallel to fix this.

Overall, using a long generator cord isn’t a big deal as long as you take the proper precautions.

Final Thoughts

You can use a generator cord that’s up to 100 feet (30.5 m) long. However, there are risks with using a long cable. So, make sure to read the manual, inspect the cord before each use, and avoid overloading it. Additionally, know that there’s a risk of voltage drop and that you should follow appropriate safety tips to avoid any accidents.

Recommended Reading

eManualOnline provides descriptive, affordable, and convenient service and repair manuals for cars, trucks, motorcycles, and more. Download one today.