5,000 vs 7,000 Watt Generators: Which Size?

What the watt figure in a title tells you

A generator listing title usually leads with a watt figure. A title that names 5,000 watts and a title that names 7,000 watts sit in two different size groups on this site: the 3,000 to 5,000 watt group and the 5,001 to 9,000 watt group. The number is the seller's stated figure, not a measured result from this site.

On most listings the first figure is the starting figure, and the second figure is the running figure. This article reads the two figures as listing words. For the full difference, see running and starting watts.

A 5,000 watt listing and a 7,000 watt listing also tend to describe different kinds of units: the smaller one often as a hand-carry or small wheeled portable, the larger one as a wheeled open-frame portable. Those are patterns in how listings read, not promises about what either unit can run.

Starting watts and running watts as listing words

Starting watts, sometimes named "peak" or "surge" watts, is the higher figure that appears at the moment a motor-driven appliance begins to draw power. Running watts is what the unit supplies continuously. The title often leads with the starting figure because it is the larger number.

The maker's page states both figures for each fuel a listing names. When a listing names two figures, read the second as the running figure and confirm it on the maker's page before comparing.

A listing that names a single watt figure with no second number leaves the running figure unstated. The maker's page is the place to read it; the seller's title is not the full specification.

• Look for the running watts figure on the maker's page
• Read the outlet list and the start method on the same page
• Compare two listings only after reading both maker's pages

Type and fuel words on each size

Inverter and open frame are separate type words in a title. A 5,000 or 7,000 watt listing may carry either word, though the larger group more often reads as an open-frame portable. See inverter vs open frame for the listing terms.

Fuel words appear next: gasoline, dual fuel, or tri fuel. A dual fuel listing names gasoline and propane; a tri fuel listing adds natural gas. The fuel words are read as listing terms, not as fuel-use measurements; this site does not state how much fuel a listing uses. Compare the fuel terms.

For a home backup situation, a portable at either size connects to the home only through a licensed electrician, with the maker and the local permit office deciding the setup. For a job site, the listing describes a portable that powers tools; the tool list is read from the maker's page.

Features listed on either size

Beyond the watt figure, the title names features that apply to both size groups: electric start or recoil start, a CO sensor, RV-ready wording, parallel capability, and outlet names. Each is a listing term, read from the title and the maker's page. See electric start vs recoil.

For a listing with CO sensor words, follow the maker's manual and read the CPSC, CDC, and NFPA carbon monoxide pages in the sources.

RV-ready wording tells you the listing names an outlet for a travel trailer or motorhome. Outlet names, including 30 amp and 50 amp RV outlets, are read on the maker's page.

Parallel capability is a listing word that describes a set designed to connect two identical units; the connection method is read on the maker's page. See parallel capability.

Matching the size to your situation

Compare the two size groups through the way you shop. The 3,000 to 5,000 watt guide and the 5,001 to 9,000 watt guide sort the listings by stated details. A 5,000 watt figure leads to the first guide; a 7,000 watt figure leads to the second.

For a job site, a wheeled portable at either size is a common listing. For camping or an RV, a hand-carry inverter set is a different type word; use the camping guide and the RV guide.

Budget tier guides on this site compare stated details; a tier name only tells you where a listing sits.

What this site cannot say about either size

This site does not size a home or promise that a 5,000 or 7,000 watt listing runs a specific appliance. The stated figures are starting and running watts; load questions go to the maker and a licensed electrician.

Read the maker's page for the model you are comparing: running watts per fuel, outlet names, start method, and the owner's manual. The manual, not this article, describes care and setup.

Use the main generator guide to see how this site groups all types, and the portable guide for open-frame and wheeled listings.

What to pick for your situation

Questions

Is the 5,000 watt figure a starting or running number?

On most listings the first figure is the starting figure. Read the second figure on the listing and confirm the running figure on the maker's page.

Which guide covers a 7,000 watt generator?

A 7,000 watt figure sits in the 5,001 to 9,000 watt group. A 5,000 watt figure sits in the 3,000 to 5,000 watt group.

Will a 7,000 watt listing power a whole house?

This site does not promise that. A licensed electrician and the maker decide what a home's wiring and load require.

Are both sizes available as inverter listings?

Size and type are separate words in a title. A listing of either watt figure may carry the inverter word; read the title and the maker's page.

How should I compare a 5,000 and a 7,000 watt listing?

Compare the stated details: type, fuel, start method, and features, then read the maker's page for the running watts.

What does this site say about what a unit can run?

The site compares stated details only. Appliance load questions go to the maker and a licensed electrician.