A generator wattage chart shows how much power each appliance or tool uses. It helps you choose the right generator for your home or business.
The chart lists both running watts and starting watts. By checking these numbers, you can see how much total power you need to run your main systems safely. This guide from Grounded Electric explains how to read wattage charts and choose a generator that fits your needs.
Grounded Electric helps homeowners and businesses manage power safely. Led by Robert “Bobby” Mulholland and Barret Abramow, the team focuses on clear planning and safe wiring.
For more details, visit our complete generator guide to learn more about sizing, safety, and maintenance.
Key Takeaways
Grounded Electric’s generator wattage chart helps you find the right generator size by comparing running and starting watts.
It explains how to calculate total wattage and avoid overloads for steady power during outages.
You can use the wattage table, printable chart, or Grounded Electric’s calculator to plan your power needs.
Both Honda and Generac wattage charts show key differences in power and reliability.
Licensed experts Robert “Bobby” Mulholland and Barret Abramow stress safety and proper installation.
Understanding Generator Wattage
Every generator produces power in watts. The generator wattage chart shows how much power different items need. Knowing these numbers helps prevent overloads and keeps your systems safe.
Running vs Starting Wattage Explained
- Running wattage: the steady power needed to keep something running.
- Starting wattage: the extra power needed when it first turns on.
A watt usage chart for generators lists common wattage values. It helps you plan how much power to use at once.
Expert Insight from Bobby Mulholland
Bobby Mulholland says balance is just as important as power. Always check the label on each appliance and use the generator wattage chart before connecting backup power.
Common Appliance Wattage Reference Table
This table lists average running and starting wattage values from Honda Power Equipment, Generac manuals, and Energy.gov.
Appliance & Portable Generator Wattage Charts
A wattage chart for a generator helps you estimate home power needs. Here are common examples:
- Refrigerator: 700–800 watts
- Microwave: 1,000–1,500 watts
- Sump pump: 1,200–2,000 watts
- Window air conditioner: 1,000–1,500 watts
Adding these values helps you calculate the total wattage your generator needs. The portable generator wattage chart also lists outdoor tools like drills and heaters.
Advice from Barret Abramow
Barret Abramow says you should power vital systems first—heating, cooling, and lighting—before adding smaller loads.
Load Calculation Scenarios and Motor Loads
Here are two short examples to show how to calculate total wattage safely.
Example 1 – Small Home:
Refrigerator (700 / 1200), Lights (300), Sump Pump (800 / 1300).
Total: 1950 running watts + 1300 starting = 3250 watts minimum.
Example 2 – Full Home:
Refrigerator (700 / 1200), Microwave (1000), Washing Machine (1200 / 2300), Window AC (1200 / 1800).
Total: 4100 running + 2300 starting = 6400 watts minimum.
Appliances with motors need 2–3× their running watts when starting. Use this simple rule:
Total Wattage = (Sum of Running Watts) + (Highest Starting Watt).
How to Choose the Right Generator Size
Follow these steps to find the right model:
- List all essential items.
- Find each item’s running wattage.
- Add the highest starting wattage.
- Compare your total to the generator’s output.
You can also check our full guide on choosing a generator for your home, which includes simple sizing tips and examples.
Example Calculation
If your total is 4,000 running watts plus 2,000 starting watts, choose a 6,000-watt generator. Oversizing wastes fuel; undersizing can cause damage.
Professional Installation with Grounded Electric
Grounded Electric designs each installation to meet local codes and ensure long-term safety.
Need Professional Help?
If you’re not sure about your generator size or wiring, Grounded Electric can help. Their licensed electricians test, size, and install generators safely.
Honda vs Generac Generator Wattage Charts
Both Honda and Generac offer detailed generator wattage charts. Honda units are quiet and great for small homes. Generac models are powerful and made for long outages.
Barret Abramow’s Expert Tip
Barret Abramow says accuracy matters more than brand. See the cost to run a Generac generator for real data on fuel use and efficiency.
Generator Size Chart
| Item | Running W | Starting W | Qty |
|---|
Tip: Enter quantities to include an item. You can edit names and watts or add custom lines.
How the calculator works
- We add all running watts and take the single highest starting watts.
- Base requirement = running total + highest starting.
- Safety margin adds extra headroom for real conditions.
- Use the result to compare portable and standby generators.
Values are typical references. Always check the nameplate on each appliance and follow local codes.
Downloadable Generator Wattage Chart
Grounded Electric also offers a printable wattage chart for generators in PDF form. It includes running and starting watts for common items. The chart follows Honda Power Equipment and Generac standards for accuracy and convenience.
Expert Tips for Safe Generator Use
- Plan your loads. Power vital circuits first.
- Use transfer switches. Prevent backfeed into the grid.
- Avoid overloading. Follow your wattage chart for the generator.
- Maintain regularly. Check oil, fuel, and filters often.
Grounded Electric, led by Barret Abramow and Bobby Mulholland, follows strict safety rules for every project. With decades of experience, they deliver trusted service and reliable power every time.
