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Generac GP3300i Spec Review

The Generac GP3300i (7154) is a compact and lightweight inverter generator with a rated wattage of 2500 W and a starting wattage of 3300 W.

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Description

The GP3300i inverter featuring advanced PowerRush™ technology delivers over 50 percent more starting capacity so you can do more with less. (source: Generac (opens in a new tab))

Zoom on the Generac GP3300i

In a nutshell, the Generac GP3300i is a compact and lightweight portable inverter generator mostly geared towards:

  • Camping and tailgating buffs looking to enhance their experience
  • DIYers who wish to improve their efficiency with tools
  • Homeowners who want to be sure of their ability to power their fridges, cooking tools, heating and lighting equipment during power failures
  • RV travellers who wish to upgrade their experience to another level

In the sections ahead, the power characteristics, availability of various outlets, the portability, and any additional features of the device shall be discussed, including its emission compliance information.

Power & Run Time

The Generac GP3300i in use

The Generac GP3300i

The Generac GP3300i's core is the 149 cc Generac OHV 4-stroke engine, which runs on gasoline. With an output of 120V, it provides a running wattage of 2500W and a peak wattage of 3300W. Moreover, since it is parallel capable (parallel kit (opens in a new tab) not included), its power may be doubled if linked to a second compatible unit.

This inverter generator features a conventional pull-start mechanism. It features Generac's PowerDial™, an easy-to-use dial with three operation settings.

The GP3300i can operate for up to 7 hours with a full tank (fuel consumption around 0.15 GPH), due to its fuel capacity of 1.06 gallon.

Sensitive electronics can be safely plugged in the AC outlets, as the GP3300i produces a clean sine wave, with a <3% Total Harmonic Disruption (THD).

Outlets

The control panel features the upcoming 3 AC outlets:

Duplex 120V 20A (5-20R)
120V 30A (L5-30R) receptacle

Furthermore, it has 2 DC outlets: there's two 5V USB ports with which charging of electronics like mobile phones and tablets is made convenient.

Even if this Generac generator isn't quite RV Ready, it still allows for an easy RV connection via an L5-30P to TT-30R adaptor, thanks to its L5-30R receptacle.

Portability

Thanks to its closed inverter generator design (L22.2 x W13.3 x H18.4 in), the Generac GP3300i, is more esthetical than a typical, open frame generator. This type of design is the most modern and convenient way to recreationally generate power.

The 59.5 lbs of the GP3300i's dry weight enables you to use it anywhere you will ever need. Furthermore, moving the GP3300i from A to B is made easier thanks to its convenient handle (molded in the case), which vastly improves your grip.

Features

Panel of the Generac GP3300i

The GP3300i's control panel

Several light indicators serve to show you when its oil levels are insufficient, the generator is ready and the generator is on overload.

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

With the basic documentation and an owner's manual (opens in a new tab), letting you start the generator quickly, the Generac GP3300i also comes with several accessories, including: oil, tool kit and funnel.

Emissions

The Generac GP3300i is EPA-approved and CARB-compliant. Therefore, its sale and purchase are permitted in all of the 50 states, including California.

Moreover, it features a spark arrestor, making it usable in forested areas.

The Generac GP3300i versus other generators

The following charts are provided to give you an idea of how some of the key specs of the Generac GP3300i compare to generators of similar power (between 2000 and 3000 W).

  • As far as its dry weight is concerned, the Generac GP3300i weighs just 59.5 pounds and thus, it is one of the lighter 2000 to 3000 rated wattage generators. If you are concerned by weight, one of the champions in the above-mentioned power range is the Ford FG2300iS, with a dry weight of just 46.3 pounds.
  • As for its autonomy, the GP3300i, with an autonomy of up to 7 hours at a 25% load, is placed on the low end among the generators of its kind. Furthermore, considering the run times, one of the generators which have a roughly same power output, with the highest autonomy, is the Westinghouse WGen2000, as it provides up to 26 hours.
  • Autonomy holds its importance, however, it is largely dependent on the generator’s fuel capacity and so, it is nonsensible to discuss it without mentioning fuel efficiency as well. This inverter generator can be considered as fuel efficient, due to its low estimated fuel consumption of only 0.15 GPH (gallon per hour) at 25% load, within the aforementioned wattage range. If fuel consumption is your top priority, we suggest to check out the Cummins Onan P2500i, which has a fuel consumption of only 0.1 GPH and thus, is one of the most efficient devices in our database.
According to our stats, the following comparison is pretty popular: Generac GP3300i vs Generac GP3000i.

Price comparison

As you can see from this interactive chart, when compared to other 2000-3000W generators, the Generac GP3300i is on the average side of the price range.

Therefore, this generator nicely fits in the expected budget for this kind of product.

The bottom line

STRENGTHS:
  • In the expected price range
  • Several accessories included
  • Parallel capable
  • Inverter
  • Lightweight (59.5 lbs)
  • Fuel efficient
WEAKNESSES:
  • No data center
  • No electric start
  • Relatively low run time

Do you own the Generac GP3300i 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 readyNo
FuelGasoline
Engine149 cc Generac OHV 4-stroke
Starting systemRecoil
Power
VoltageAC: 120V 60 Hz, DC: 5V
Running watts2500 W
Starting watts3300 W
Running amps20.8 amps
Peak amps27.5 amps
Run time @50% load4.5 h
Run time @25% load7 h
Features
GFCI outletsNo
Covered outletsNo
Automatic Voltage RegulationInverter
AC outlets
  • 1x Duplex 120V 20A (5-20R)
  • 1x 120V 30A (L5-30R)
DC outlets2x 5V USB port
Data centerNo
IndicatorsLow oil, overload and output ready
Fuel tank1.06 gal
Fuel gaugeNo
Misc
Weight59.5 lbs
Approx. dimensions (L x W x H)22.2 x 13.3 x 18.4 in
Noise (lower limit)Unknown
THD< 3%
EmissionsCARB, EPA
SecurityLow oil and overload protection
Spark arrestorYes
NeutralFloating
Accessories includedOil, funnel, and tool kit
Warranty3 years
SeriesGP
Other model numbers7154

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 Generac

Generac Power Systems is an American based generator and power equipment manufacturer, founded in 1959. As its name suggests, the main focus of Generac are power generators, and other related electric equipment, such as switches, paralleling systems and small engines. The company has several manufacturing facilities based in the US, thus, their products are made in the USA. However, the company provides no information about the origin of their components.

Warranty Information

The Generac GP3300i is covered under a warranty for up to 3 years. This warranty may be limited and may not cover all parts of the generator.
For more information about the warranty of Generac generators, please consult Generac's warranty policies (opens in a new tab). Alternatively, you can also contact their Customer Support: 1-888-GENERAC (888-436-3722).

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 generator size calculator.
ItemRunning WattsStarting Watts
At homeElectric fry pan15001500
Refrigerator (energy star)1921192
Slow cooker270270
Cell phone charger2020
Total1982 W2982 W
For campingRV AC (11,000 BTU)10101600
RV refrigerator180600
Toaster oven800800
Total1990 W2580 W
For workGrinder14002500
Electric fence (25 miles)250250
Drain cleaner250250
Bug zapper8080
Total1980 W3080 W
What is the noise rating of the GP3300i?

Due to the lack of standardization in noise emission measurement, Generac does not provide their units' noise levels.

Can a 3300i be used on a RV that has a surge guard that is hard wired. (Asked June 23, 2021)

The unit has a floating neutral. Your surge guard protection device may detect this as an open ground condition and not allow power to pass through. In that case, you may need to bond the neutral.

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