What Size Generator Do I Need for My Equipment?

Choosing the right generator is about more than matching the wattage printed on your equipment. Your generator needs enough capacity to handle your machines safely and reliably throughout the job.

Know Your Power Requirements

Start by checking the voltage, amperage, and power requirements of your grinder, dust extractor, and any other equipment you plan to run. Motor-driven equipment can also require additional power during startup.

Consider What Runs Together

If you're running a floor grinder and dust extractor at the same time, your generator needs to support their combined load—not just the largest machine.

Leave Yourself Extra Capacity

Avoid sizing a generator right at your equipment's maximum demand. Having additional capacity gives you room for startup loads, accessories, and other jobsite equipment.

120V vs. 240V

Larger floor grinders and surface-prep machines may require 240V power, so make sure your generator has the correct voltage, amperage, and outlet configuration—not simply enough total watts.

The Surface Core Take

Size your generator around your entire jobsite setup, not one machine. Check the manufacturer's electrical requirements and give yourself enough capacity to keep your equipment running reliably.