Wattstanding
WEN 56380i 3800-Watt RV-Ready Portable Inverter Generator

Product image: WEN

Generator · WEN

WEN 56380i 3800-Watt RV-Ready Portable Inverter Generator

WEN · 3,400 W running · Gasoline

The short answer

The WEN 56380i 3800-Watt RV-Ready Portable Inverter Generator is an inverter generator rated at 3,400 running watts and 3,800 starting watts. By watts alone it can run 19 of the 20 household appliances we model. Its listing indicates a transfer-switch- or RV-style outlet. WEN lists it at $700, about $0.21 per running watt.

Running watts
3,400 W
Starting watts
3,800 W
Fuel
Gasoline
Price seen
$700

Good fit if

  • You want to run essentials — refrigerator, furnace blower, sump pump, lights — from one unit
  • You plan a 30 A inlet or manual transfer switch installed by an electrician

Look elsewhere if

  • You need central air conditioning or electric heat
  • Noise or exhaust near neighbors is a problem
  • You want a built-in carbon monoxide shutoff (none is listed in the sources we read)
$699.99WEN listed price (base model) · seen 30 Sep 2026
View at WENCheck price on Amazon

Every link opens the product page for this exact model. We may earn a commission; it never changes what we publish. Disclosure

What it can run

Generators are sized in watts. Running watts are what the unit can supply continuously; starting watts are a short surge for motors and compressors. The WEN 56380i 3800-Watt RV-Ready Portable Inverter Generator is rated at 3,400 W running and 3,800 W starting.

Appliances this generator can run, by watts
Appliance (typical)Running / starting wattsCan it run it?
Refrigerator (modern, about 18–22 cu ft)150 W / 600 W startYes
Chest freezer (about 7 cu ft)100 W / 400 W startYes
Sump pump (1/3 hp)800 W / 1,500 W startYes
Well pump (1/2 hp)1,000 W / 2,100 W startYes
Gas furnace blower750 W / 1,500 W startYes
Window air conditioner (5,000–8,000 BTU)600 W / 1,800 W startYes
CPAP with heated humidifier70 WYes
Home oxygen concentrator300 WYes
Wi-Fi router and modem25 WYes
LED television (55 in)100 WYes
LED lighting (10 bulbs)100 WYes
Laptop and charger60 WYes
Phones and tablets charging (4)40 WYes
Ceiling or box fan75 W / 150 W startYes
Microwave oven (1,000 W cooking)1,500 WYes
Coffee maker900 WYes
Garage door opener (1/2 hp)550 W / 1,100 W startYes
Washing machine500 W / 1,300 W startYes
Electric space heater (1,500 W)1,500 WYes
Central air conditioner (3-ton)3,500 W / 10,500 W startNo
Wattstanding calculationWattstanding calculation — to size a generator, add the running watts of everything you will run at once, then add the largest single starting surge (starting − running watts) from any one motor. The result must stay within the generator's running and starting watts. Appliance wattages are typical planning values — read the nameplate.

Use the load calculator to total your own appliances.

Fuel and runtime

The sources we read do not give both a tank size and a runtime for this model, so we do not calculate a fuel burn rate.

Connecting it to a home

The listing mentions a transfer-switch- or RV-style outlet. To power home circuits you need a rated transfer switch or interlock and an inlet, matched to this generator's outlet and amperage, installed by a licensed electrician.

Check the pairing in the generator ↔ transfer-switch compatibility matrix.

SafetyNever plug a generator or battery system into a wall outlet to power the house ("backfeeding"): it can send electricity back into the utility lines and injure line workers, and it can start fires. Connecting a generator to a home's wiring is a job for a licensed electrician, with the permit and inspection your local code requires. Wattstanding does not give wiring instructions.

Safety and placement

SafetyNever run a generator inside a home, garage, basement or any enclosed or partly enclosed space — exhaust contains carbon monoxide, which can kill in minutes. Keep it outdoors, well away from doors, windows and vents, with the exhaust pointed away from the house, and use battery-powered carbon monoxide alarms indoors. Follow the maker's manual and U.S. Consumer Product Safety Commission guidance.

We did not find a carbon monoxide shutoff listed for this model in the sources we read, which makes outdoor placement and working CO alarms even more important.

Fit check before you buy

Checks to make against your loads, fuel plan and home before ordering.

✓ Required? Check firsti Good to know
  • ✓WattsKeep the running total under 3,400 W and the largest start under 3,800 W.
  • ?Fuel supplyPlan fuel storage and supply for gasoline; check local rules on storing fuel.
  • ?Home connectionA transfer switch or interlock and inlet must match the generator's outlet and amperage and be installed by a licensed electrician.
  • iPlacement and noiseOutdoors only, away from openings; no noise figure was stated.

Specifications

Each figure is labelled with where it comes from. Numbered references link to the source list below.

Manufacturer storeRetailer listingWattstanding calculationNot verified

Published specifications

Running (rated) watts3,400 W[S1]Manufacturer store
Starting (peak) watts3,800 W[S1]Manufacturer store
Fuel typesGasoline[S1]Manufacturer store
Certification212cc 4-stroke OHV engine produces 3800 surge watts and 3400 rated watts with a [S1]Manufacturer store

Wattstanding calculations

Appliances it can run by watts19 of 20Wattstanding calculation
Price per running watt$0.21Wattstanding calculation

Limitations to weigh

  • Specifications are the maker's or seller's; Wattstanding has not tested this product.
  • Runtime and fuel figures are the maker's stated values or our labelled calculations.
  • Prices change; confirm the price, stock and what is included before ordering.

Alternatives worth comparing

WEN DF450i 4500-Watt Dual Fuel RV-Ready Portable Inverter Generator3,500 W running, gasoline/propane; same price
A-iPower 3800W Portable Inverter Generator With CO Alert - SUA3800iP3,500 W running, gasoline; $30 less
Westinghouse Outdoor Power iGen4000DFcv Inverter Generator - Dual Fuel3,600 W running, gasoline/propane; $69 more
FIRMAN LPG Portable Generator 4100/3300W Electric Start (L03391)3,300 W running, propane; $200 more

Where to buy

Our link opens this exact product page. Prices and stock change; check before you order.

$699.99WEN listed price (base model) · seen 30 Sep 2026
View at WENCheck price on Amazon

Every link opens the product page for this exact model. We may earn a commission; it never changes what we publish. Disclosure

Questions buyers ask

How many watts is the WEN 56380i 3800-Watt RV-Ready Portable Inverter Generator?
3,400 running watts and 3,800 starting watts as listed.
Can the WEN 56380i 3800-Watt RV-Ready Portable Inverter Generator run my refrigerator and sump pump together?
Refrigerator (modern, about 18–22 cu ft): yes. Sump pump (1/3 hp): yes. Totals still need to stay within the rating when they run at once.
Can I connect it to my house?
Only through a properly rated transfer switch or interlock installed by a licensed electrician. Never backfeed through a wall outlet.
Where can I buy the WEN 56380i 3800-Watt RV-Ready Portable Inverter Generator?
1 seller list it: WEN.

Sources and verification

  1. WEN — WEN 56380i Super Quiet 3800-Watt RV-Ready Portable Inverter Generator with Fuel Shut-Off and Electric Start — product page and specifications Retrieved 30 Sep 2026

Wattstanding has not tested this product hands-on. This reference is compiled from the sources above; our calculations are labelled and show their working. Electrical work belongs to a licensed electrician. Last verified 30 Sep 2026. How we work