WEN 56477i
Generator · WEN 4800-Watt Inverter Generator. Specs from the manufacturer page (checked ).

The WEN 56477i is a gasoline-fueled portable inverter generator with 4000 rated watts and 4800 surge watts, powered by a 224cc engine. It produces clean power with total harmonic distortion under 1.2 percent at full load and carries a 3-year limited warranty.
Key features
- 224cc engine with 4800 surge watts and 4000 rated watts
- Four three-prong 120V NEMA 5-20R receptacles, one 120V TT-30R RV receptacle, one 12V DC receptacle, and two 5V USB ports
- Total harmonic distortion under 0.3 percent at no load and under 1.2 percent at full load
- 1.9-gallon tank provides up to 7 hours of half-load run time
- Fuel shutoff uses up fuel remaining in the carburetor before shutdown
- Eco-mode switch adjusts fuel consumption to the items plugged in
- Can be paralleled with another WEN inverter generator using a WEN Parallel Connection Kit (sold separately)
- Low-oil and low-fuel automatic shutdown with built-in overload protection; 62 decibels at quarter load
What it is for
- RV
- camping
- hunting
- tailgating
- home backup power
Specifications
| Running watts | 4000 W |
|---|---|
| Peak / surge | 4800 W |
| Fuel | gasoline |
| Tank | 7.19 L (1.9 gal) |
| Run time at 50 % load | 7 h |
| Noise | 62 dB |
| AC output voltage | 120V |
| Warranty | 3 years |
From the WEN page. Values the manufacturer does not publish are left out.
Similar inverter & portable generators
Anker SOLIX Smart Generator 5500
Pulsar GD400BN
Champion 5500-Watt Dual Fuel Inverter
Firman W03383
A-iPower GXS5000RD
Firman T04073
Pulsar PG5000BiSRCO
WEN 56477i comparisons
- 56477i vs Generac iQ5200
- 56477i vs Anker SOLIX Smart Generator 5500
- 56477i vs Pulsar GD400BN
- 56477i vs Champion 5500-Watt Dual Fuel Inverter
- 56477i vs Firman W03383
Connection and wiring
Follow the diagrams in the WEN manual. Connecting to a home panel needs a transfer switch or interlock and a licensed electrician.
- Parallel connection, manual page 2 →
- Parallel connection, manual page 11 →
- Parallel connection, manual page 17 →
- Wiring diagram, manual page 30 →
Error codes and troubleshooting
We found no error-code table in this manual. Its troubleshooting section is the reference.
FAQ
How long does the WEN 56477i run on a tank?
The maker rates it at 7 hours at 50 % load (about 2,000 W) on a 1.9-gal tank. A light load such as a refrigerator and lights runs longer; a full load runs shorter.
Can the WEN 56477i start a sump pump or well pump?
Starting surge matters more than running watts: this unit is rated 4800 W peak. That covers a typical 1/2 HP sump pump (about 2150 W to start). Use the calculator with your exact pump.