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WEN GN400iX - 3500/4000W Open Frame Inverter Generator

The WEN GN400iX is a compact and lightweight open frame inverter generator with a rated wattage of 3500 W and a starting wattage of 4000 W.

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Description

Zoom on the WEN GN400iX

The WEN GN400iX is the newer version of the GN400i. It's a compact and lightweight portable inverter generator mostly geared towards:

  • RV travellers looking for even more independence
  • People occasionally participating in sporting competitions, open-air performances and outdoor festivals
  • Handcrafting enthusiasts who wish to work on-the-go
  • Homeowners who want to be sure of their ability to power their fridges, cooking tools, heating and lighting equipment during power failures
  • Tailgating and campground aficionados with the desire of enjoying power anywhere they go

The following sections will present you in detail its power characteristics, the different outlets it offers, its overall portability, the extra features it benefits from, and any relevant emission compliance details.

Power & Run Time

The WEN GN400iX's design includes a gasoline-fueled 212 cc OHV 4-stroke engine. With a 120V output, it gives a running wattage of 3500W and also a peak wattage of 4000W. Additionally, as the generator is parallel capable (WEN Parallel Connection Kit (opens in a new tab) not included), it can be linked to a second unit for more power.

With a noise rating of 67 dBA (less noisy than an office), the inverter generator features a conventional pull-start mechanism.

With a fuel capacity of 1.85 gallon, the GN400iX may run for around 7 hours at 50% load with a full tank (fuel consumption around 0.26 GPH).

The GN400iX produces a clean sine wave: thanks to a <1.2% Total Harmonic Disruption (THD), your sensitive electronics can be safely plugged in the AC outlets.

Outlets

The control panel features the following 3 AC outlets:

Duplex 120V 20A (5-20R)
120V 30A (TT-30R) receptacle

Furthermore, it has 2 DC outlets: there's two 5V USB ports (USB-A) allowing you to conveniently charge electronics such as mobile phones and tablets.

Thanks to its TT-30R receptacle (TT stands for 'Travel Trailer'), this WEN generator is RV Ready.

Portability

With its dimensions of L19.8 x W13.8 x H18.9 in, the conventional, open frame design of the WEN GN400iX offers stability and allows the generator to be raised above ground level. The design is ideal for rough environments and demanding outdoor use.

As the GN400iX's weight is only 66.1 lbs, it can follow you and your power needs anywhere. Moreover, its open frame design makes it incredibly easy to grab the frame in order to change its location.

Features

Panel of the WEN GN400iX

The GN400iX's control panel

The light indicators show you if its oil levels are insufficient, the generator is ready and the generator is overloaded.

A built-in fuel gauge allows for a quick, easy and convenient check of the fuel level of the inverter generator.

As far as security is concerned, the generator can be used with a peace of mind, as it features a low fuel automatic shutdown, an automatic low oil shut-off and an overload protection (circuit breaker).

The unit also benefits from WEN's CO Watchdog carbon monoxide detection. This system measures the accumulation of poisonous CO gas while the generator is running. If the level of CO gas gets too high, the CO Watchdog system will automatically shut down the generator. It’s a welcomed additional security feature, but don’t forget to always take your generator outside (opens in a new tab).

While the standard documentation and an owner's manual (opens in a new tab), helpful for starting the device promptly, come with the WEN GN400iX, the following accessories are also included: funnel, tool kit and 2 altitude kits. An official storage cover is also available, as a separate purchase.

Emissions

The WEN GN400iX is EPA-approved and CARB-compliant. It can therefore be sold and purchased in all 50 states, including California.

Moreover, it features a spark arrestor, so it is adequate for use in forested areas.

The WEN GN400iX versus other generators

The following charts are provided to give you an idea of how some of the key specs of the WEN GN400iX compare to inverter generators of similar power (between 3000 and 4000 W).

  • Weight-wise, the WEN GN400iX has only 66.1 lbs, which renders it one of the lighter inverter generators which produce 3000 to 4000 rated watts. If you are concerned by weight, one of the champions in the above-mentioned power range is the Genmax GM3300i, with a dry weight of just 47.4 pounds.
  • If compared to generators capable of producing a similar running wattage, this inverter generator with a lowest emitted noise of 67 dBA can be considered somewhat noisy. For those who are looking for a less noisy device, we suggest the Cummins Onan P4500i. With just 52 dBA, it is one of the most quiet devices in this power range.
  • Regarding its autonomy, the autonomy of the GN400iX, reaching around 7 hours at a 50% load, can be considered as low end, compared to other inverters of a roughly equal output. If concerned with autonomy, one of the products of a comparable power output, which offers the highest run time, is the Cummins Onan P4500i, boasting with around 15 hours.
  • While the run time is an important parameter, it is dependent on the fuel tank’s capacity and thus, doesn’t say much on its own unless we consider fuel consumption as well. This inverter generator, with an estimated fuel consumption of just 0.26 GPH (gallon per hour) at 50% load, is one of the more fuel efficient generators, for the previously mentioned wattage range. If you wish to acquire one of the most gasoline efficient products of this power range, the Genmax GM3300i, with a fuel consumption of 0.22 GPH could be in your good books.

Price comparison

As you can see from this interactive chart, when compared to other 3000-4000W inverter generators, the WEN GN400iX is on the cheap side of the price range.

It can therefore be a really good buy if you're looking to acquire a budget generator.

The bottom line

STRENGTHS:
  • Inexpensive
  • CO Watchdog
  • Several accessories included
  • RV Ready
  • Parallel capable
  • Inverter
  • Lightweight (66.1 lbs)
  • Fuel efficient
WEAKNESSES:
  • No data center
  • No electric start
  • On the noisy side (67 dBA)
  • Relatively low run time

Do you own the WEN GN400iX and agree (or disagree) with these strengths and weaknesses?

Let us know and write your own review.

Features and Specifications

General
InverterYes
PortableYes
Parallel capableYes, cable not included
RV readyYes
FuelGasoline
Engine212 cc OHV 4-stroke
Starting systemRecoil
Power
VoltageAC: 120V 60 Hz, DC: 5V
Running watts3500 W
Starting watts4000 W
Running amps29.2 amps
Peak amps33.3 amps
Run time @50% load7 h
Run time @25% loadUnknown
Features
GFCI outletsNo
Covered outletsNo
Automatic Voltage RegulationInverter
AC outlets
  • 1x Duplex 120V 20A (5-20R)
  • 1x 120V 30A (TT-30R)
DC outlets2x 5V USB port (USB-A)
Data centerNo
IndicatorsLow oil, overload and output ready
Fuel tankSteel, 1.85 gal
Fuel gaugeYes
Misc
Weight66.1 lbs
Approx. dimensions (L x W x H)19.8 x 13.8 x 18.9 in
Noise (lower limit)67 dBA
THD< 1.2%
ComplianceCARB, EPA
SecurityLow oil, overload and low fuel protection, CO monitoring
Spark arrestorYes
NeutralFloating
Accessories includedFunnel, tool kit, and 2 altitude kits
Warranty2 years
UPC044459014003

Unlike many websites, we did our best to research each of the specs above. That being said, we are not immune to making the occasional mistake or omission. Should you notice any missing or incorrect values, don't hesitate to suggest improvements so we can address the issue.

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About WEN

WEN Products, founded by Nick Anton in 1951, is an American power tool manufacturer and distributor, which claims to have a part in the development of modern chainsaw, soldering devices and wet sharpeners, through its research in random orbital technology. The Illinois based company expanded its distribution network to include various power tools, such as presses, drills and of course, power generators. As a distributor, WEN’s portfolio largely consists of branded products of different manufacturers, imported from Asia.

Warranty Information

The WEN GN400iX is covered under a warranty for up to 2 years. This warranty may be limited and may not cover all parts of the generator.
For more information about the warranty of WEN generators, please consult WEN's warranty policies (opens in a new tab). Alternatively, you can also contact their Customer Support: 1-847-429-9263.

Questions & Answers

What can it power?
Examples of items that can be simultaneously powered.
The examples below are based on a maximum load of 80% and estimated wattages. For a more accurate estimation, use our wattage calculator.
ItemRunning WattsStarting Watts
At homeMicrowave (1000 watts)15001500
Refrigerator (energy star)1921192
Vacuum cleaner10751175
Cell phone charger2020
Total2787 W3787 W
For campingRV AC (11,000 BTU)10101600
RV refrigerator180600
Electric fry pan15001500
Radio100100
Total2790 W3380 W
For workGrinder14002500
Demolition hammer12601260
Bug zapper8080
Total2740 W3840 W

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