Generac GP5500

Generator. Specs from the manufacturer page (checked 2026-10-26).

The Generac GP5500 is a gasoline portable generator rated at 5,500 W running and 6,875 W starting, with electric start and a battery included. The page, which is for the GP5500E, lists up to 10.5 hours of runtime at 50% load on a 5.4 gal (20.4 L) fuel tank.

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Key features

• Rated 5,500 W running and 6,875 W starting output
• Up to 10.5-hour runtime at 50% load when running on gasoline
• Electric start with a rocker switch (battery included)
• 5.4 gal (20.4 L) fuel tank capacity
• 298cc OHV engine with EFI technology
• COsense carbon monoxide protection
• Low-oil level shutdown protects the engine
• Covered outlets and HomeLink manual transfer switch compatibility

What it is for

• Recreational use
• Emergency outages
• Home backup power

Specifications

From the Generac page. Values the manufacturer does not publish are left out.

What is in the box

• Battery
• Handle and wheel kit

Similar inverter & portable generators

All Generac models →

Connection and wiring

Follow the diagrams in the Generac manual. Connecting to a home panel needs a transfer switch or interlock and a licensed electrician.

• Wiring diagram, manual page 25 →

Error codes and troubleshooting

We found no error-code table in this manual. Its troubleshooting section is the reference.

FAQ