WEN 56477i 4800W Inverter inverter generatorCheck best price → All photos, customer reviews and today's price →
Clean inverter power · Gas inverter · 4,000 W

WEN 56477i 4800W Inverter review: our full analysis

Brand: WEN · Ranked 81st of 174 · Our methodology

7.1/10 Power7.3 Runtime6.4 Noise7.5 Features5.4 Portability8.6 Watts per dollar7.7 Dotted line: average of the 174 models. Relative scores based on specs, no hands-on testing. Where to buy Today's best priceTypical price: $500–$800 Check best price Affiliate link: As an Amazon Associate we earn from qualifying purchases.
Key takeaways. The WEN 56477i 4800W Inverter is a gas inverter generator rated at 4,000 running watts and 4,800 starting watts, built for RVs and travel trailers, through its TT-30R outlet. It weighs 72.7 lb, is rated at 62 dB(A) and runs about 7 hr at half load on a tank.

Not clearly published by the manufacturer, take with caution: noise level.

Pros

  • 4,000 running watts with four 5-20R outlets and a TT-30R.
  • Wheels and telescoping handle.
  • Under 1.2% THD at full load.

Cons

  • 72.7 lb.
  • Recoil start only and no CO sensor.

Best for

  • RVs and travel trailers, through its TT-30R outlet
  • Essential home backup with clean power for electronics

Specifications

TypeGas inverter (inverter: clean power)
Running watts4,000 W gasoline
Starting watts4,800 W gasoline
FuelGasoline
Fuel tank1.9 gal
Runtime7 hr at 50% load
Noise62 dB(A) (manufacturer figure)
Weight72.7 lb
Outlets4 × 120 V household outlets (5-20R) · TT-30R 30 A RV outlet · USB ports · 12 V DC outlet
Transfer switch readyNo (no 240 V outlet)
StartRecoil (pull start)
CO shutoff sensorNot listed
Parallel capableYes
EmissionsEPA compliant
Engine224 cc
Warranty3 years
WEN 56477i 4800W Inverter4,000 running W · Gas inverter · typical price $500–$800 Check price and availability

Who is it for?

The WEN 56477i 4800W Inverter is mostly suited to:

  • RVs and travel trailers, through its TT-30R outlet.
  • Essential home backup with clean power for electronics.
1

4,000 running watts: what can it power?

The WEN 56477i 4800W Inverter delivers 4,000 W continuously and up to 4,800 W for a few seconds to start motors. It handles 12 of the 14 loads on our typical list one at a time; add up the running watts of everything you run together, plus the extra starting watts of the biggest motor. As an inverter, it produces clean power suited to laptops, TVs and furnace control boards.

ApplianceRunning / starting wattsWill it run?
Wi-Fi router and modem20 W / 20 W✅ Yes
CPAP (no humidifier)50 W / 50 W✅ Yes
Laptop or TV150 W / 150 W✅ Yes
Full-size refrigerator700 W / 2,200 W✅ Yes
Chest freezer500 W / 1,500 W✅ Yes
Furnace blower (1/2 HP)800 W / 2,350 W✅ Yes
Sump pump (1/2 HP)1,050 W / 2,150 W✅ Yes
Microwave (1,000 W)1,000 W / 1,000 W✅ Yes
Space heater1,500 W / 1,500 W✅ Yes
Window AC (10,000 BTU)1,200 W / 3,600 W✅ Yes
RV roof AC (13,500 BTU)1,800 W / 2,800 W✅ Yes
Circular saw1,400 W / 2,300 W✅ Yes
Well pump (1 HP, 240 V)1,000 W / 4,000 W❌ Needs 240 V
Central AC (3-ton, soft start)3,800 W / 5,500 W❌ Needs 240 V

Typical figures; check the label of your own appliances. One load at a time: add up everything you run together.

WEN 56477i 4800W Inverter4,000 running W · Gas inverter · typical price $500–$800 Check best price
2

Fuel tank and runtime

The fuel tank holds 1.9 gallons of gasoline. At half load, it runs about 7 hr on a full tank. That is about 0.27 gallon per hour at half load, or 7 gallons for a full day of running, so plan your fuel storage for a multi-day outage.

Fuel tank1.9 galgasoline
At 50% load7 hrmanufacturer figure
Fuel per day≈ 7 gal24 h at half load
3

62 dB(A): how loud is it?

The manufacturer rates the WEN 56477i 4800W Inverter at 62 dB(A), usually measured at 23 feet (7 m) and a light load. That is about the level of a conversation or a dishwasher: acceptable at a campground.

4

Can you connect it to your house?

Its panel offers 4 × 120 V household outlets (5-20R), TT-30R 30 A RV outlet, USB ports, 12 V DC outlet. It has no 240 V outlet: it runs plug-in appliances through extension cords, not hardwired circuits or a 240 V well pump. The TT-30R outlet plugs straight into a 30 A RV. It is parallel capable: linked to a second compatible unit with a parallel kit, the two outputs combine.

5

Starting, safety and warranty

It starts with a recoil (pull) cord. The manufacturer does not list a CO shutoff sensor: be strict about placement, 20 feet from the house with the exhaust pointed away. It is listed as EPA compliant; check California availability if you live there. The warranty runs 3 years (residential use).

6

Typical price $500–$800: good value per watt?

Relative to its running watts, the WEN 56477i 4800W Inverter scores 7.7/10 on value: an average result. Inverters always cost more per watt than open frames: compare it with other inverters. Generator prices on Amazon move a lot, especially before hurricane season: check the current price before you buy.

WEN 56477i 4800W Inverter4,000 running W · Gas inverter · typical price $500–$800 Check best price

Our verdict on the WEN 56477i 4800W Inverter

The WEN 56477i 4800W Inverter scores 7.1/10 and ranks 81st out of 174 generators analyzed. Its strengths: 4,000 running watts with four 5-20R outlets and a TT-30R; wheels and telescoping handle. It is best suited to RVs and travel trailers, through its TT-30R outlet and essential home backup with clean power for electronics.

WEN 56477i 4800W Inverter4,000 running W · Gas inverter · typical price $500–$800 Check best price

Featured in our rankings

Best inverter generators44th of 120Best generator for RV61st of 84Best parallel capable inverter generator30th of 98Best 4500 watt generator23rd of 44Best generator under $1,00038th of 111Best generator under $1,50059th of 142WEN generators: reviews and lineup comparison6th of 18

Sources

Frequently asked questions

Will the WEN 56477i 4800W Inverter run a refrigerator?

Yes: its 4,000 running watts and 4,800 starting watts cover a full-size fridge, including the compressor's startup surge.

Can the WEN 56477i 4800W Inverter power a house?

Only plug-in appliances through extension cords: it has no 240 V outlet for a transfer switch.

How long does the WEN 56477i 4800W Inverter run on a tank?

About 7 hr at half load according to the manufacturer.

Does the WEN 56477i 4800W Inverter run on propane?

No, it runs on gasoline only.

Is the WEN 56477i 4800W Inverter quiet?

The manufacturer rates it at 62 dB(A), typical of an open-frame generator: not campground-quiet.

WEN 56477i 4800W Inverter4,000 running W · Gas inverter · typical price $500–$800 Check best price

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