How to Use a Standby Generator Sizing Calculator

standby generator sizing calculator

In order to find the correct size for your standby generator, you’ll need to know the peak demand for your space. To determine the peak demand, multiply the starting current of the largest motor by the voltage to get the watts required. This formula can also be applied to non-motor loads. Once you have this information, you can multiply the total watts required by the largest motor by 1000 to get kilowatts. Another popular method is to use square footage.


GenSizer standby generator sizing software is a great tool for residential load calculation. The program is easy to use and requires only a login from your local distributor. It generates a custom specification and PDF drawings. You can also upload your company’s logo and export your calculations in a professional format.

Manually sizing a generator can be challenging, requiring a complex analysis of load and sizing parameters. Fortunately, generator sizing software is becoming more advanced, making it possible to accurately choose the perfect size for any application. In this article, we’ll examine four of the most popular generator sizing software applications, explain how they work, and provide tips and tricks for optimizing generator size.

The GenSizer standby generator sizing tool has five sections, each containing extensive electrical information. You’ll need to know which electrical items and appliances you want to power during an outage before you use the generator sizing calculator. It’s best to consult with an electrician for electrical calculations to ensure the proper wattage.


When you buy a Norwall standby generator, it is essential to select the right wattage for your needs. You can use the online sizing calculator to determine the power required for your home. Norwall also offers solar components and PWRcell battery storage, as well as its PWRzone energy storage system.

The sizing calculator works by taking the starting current of your largest motor and multiplying that by the voltage. You then multiply this number by 1,000 to get the total wattage. This method is typically used for retail, convenience, and commercial applications, where power needs are based on square footage.

If you are uncertain how much wattage you need, you can always consult a professional installer who can run a free home energy assessment. They can recommend a generator size that will meet your needs and fit your budget. The biggest problem with choosing the wrong size is overloading the generator, which can lead to damage. Additionally, buying a generator that is too small will cost you more money in the long run.

You will want to consider the cost of the generator itself. While you may need to spend a small amount of money for installation, you will be saving a considerable amount of money on repairs and maintenance. In addition to this, you will be ensuring that all appliances in your home are running efficiently and that you don’t have to miss work. A home generator also keeps you comfortable, even in the coldest of temperatures. You should choose a generator with enough power to power the appliances and electronics that you plan to use, including your refrigerator.

Briggs & Stratton

The Briggs & Stratton Standby Generator Sizing Calculator is an excellent tool for determining the appropriate size of a generator for your home. The calculator allows you to input the number of electrical loads and appliances in your home. It will then direct you to the correct size generator for your needs.

The calculator works by dividing the total wattage you require by 1000, the number of kilowatts you need, and the margin of safety. This way, you can figure out how much power your home will need at any given time. You can then multiply this figure by 1.25 to get the kilowatt capacity of the generator. For example, if you use 17.5 kilowatts for your home, you should purchase a generator with a capacity of 18-22 kilowatts. Similarly, as your needs increase, the minimum size of the generator should be increased by 20%.

A home standby generator can power your entire house. It automatically kicks on when the power goes out. This means you don’t have to worry about replacing your appliances during a power outage. They also don’t require refueling and can raise your home’s value.

Before buying a generator, you should consider how much power each appliance needs. Considering the total number of appliances in your home will help you determine which size is right for your home.