Nov 10, 2025 · Determining the size of your electrical service means finding the amp rating of the main circuit breaker or fuse. Here's how to do it.

To find the appropriate subpanel rating, we must first calculate the total wattage of the appliances that will be connected to the subpanel or main lug: 1500 W + 1440 W + 5600 W = 8540 W. …

Apr 9, 2025 · We put this guide together to simplify complex topics like choosing the right panel size, calculating total amperage, and assessing your household’s electrical needs.

Oct 19, 2018 · For a small home or condo, 125 amps is adequate; and 150 amps is quite satisfactory for many average size family homes, especially if they have any gas-powered …

One of the first things you should do on the path to electrifying everything (or anything!) in your home is to check the size of your home’s electrical panel. This will help you determine if you …

Aug 12, 2025 · The calculator ensures that the selected panel has enough capacity to handle both current and potential future loads. This prevents operational issues and avoids unnecessary …

Determine the right sub-panel size. We explain how to match electrical load and physical space while respecting main service limits.

Feb 7, 2023 · The size of an electrical panel depends on several factors, including the number of circuits in a given space and the amperage required by those circuits. For most residential …

There are a few crucial factors that can help you determine the correct electrical panel size for your home, whether you’re upgrading your current panel or building a new construction house.

Learn what size electrical panel your home needs. Compare 100–400 amp panels, spot upgrade signs, and plan for EVs, solar, or modern appliances.