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Firman P03602 - 3650/4550W Portable Generator

The Firman P03602 is a portable open frame generator with a rated wattage of 3,650 W and a starting wattage of 4,550 W. (Read full specs)

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Description

The P03602 is a standard open frame portable generator. With an ergonomic handle and never-flat wheels, this generator is easy to transport for those weekend camping getaways or portable backup power. It features 4550 starting watts and 3650 running watts, with a reliable recoil start system.

Zoom on the Firman P03602

In short, the Firman P03602 is a portable generator adequately designed for:

  • RV travellers looking for even more independence
  • People occasionally participating in outdoor fairs, festivals or events
  • Homeowners who want to be sure of their ability to power their fridges, cooking tools, heating and lighting equipment during power failures

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

Power & Run Time

The Firman P03602 in use

The Firman P03602

With a 208 cc Firman Max-Pro Series OHV 4-stroke engine, the Firman P03602 operates on gasoline, providing 120V, with a running wattage of 3,650W and a starting wattage of 4,550W.

Rated for 67 dBA (less noisy than an office), the generator's starting mechanism relies on a classic hand-operated recoil starting mechanism.

The P03602's fuel tank holds 5 gallons, ensuring uninterrupted operation for around 14 hours at 50% load with a full tank (fuel consumption approximately 0.36 GPH).

The quite high THD (<25%) of the P03602 makes it unsuitable for powering sensitive electronic devices.

Outlets

The control panel is equipped with the following 4 AC outlets:

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

With its TT-30R receptacle (TT standing for 'Travel Trailer'), this Firman generator is RV Ready, perfectly suited for powering recreational vehicles.

Portability

Measuring L24.8 x W21.7 x H21.7 in, the classic open frame construction of the Firman P03602 provides stability while enabling convenient maintenance access to components and adequate air cooling. The featured design is ideal for the outdoors and all tough environments.

While weighing 108.5 lbs, the generator is classified as 'portable,' indicating its mobility, albeit its heftiness may limit portability in specific situations. However, the limited maneuverability is remedied with its wheel kit (⌀8") and its folding handle, facilitating convenient shifting once the generator is positioned on the ground.

Features

Panel of the Firman P03602

The P03602's control panel

To help you monitor the P03602's status and activity, its control panel is equipped with a convenient meter, showing voltage, frequency, and lifetime hours metrics.

In addition to this info, when its oil levels are insufficient, you will be informed by the featured light indicator.

Thanks to its built-in fuel gauge, the generator allows you to quickly, conveniently, and easily check the gas level at a glance.

As for its security measures, the device features an overload protection (circuit breaker) and an automatic low oil shut-off, letting you use it with a peace of mind.

In addition to the traditional documentation and an owner's manual (opens in a new tab) to help you get started promptly, the Firman P03602 also includes several accessories: oil, funnel and tool kit.

Product Video

The Firman P03602 versus other generators

The following charts are provided to give you an idea of how some of the key specs of the Firman P03602 compare to generators of similar power (between 3500 and 4500 W).

  • With a dry weight of 108.5 lbs, the Firman P03602 sits comfortably within the expected weight range for devices generating 3500 to 4500 rated watts. If weight matters to you, one of the champions in this power range is the Genmax GM4600iAEFIC with only 58.4 pounds.
  • Since the generator's noise is rated at 67 dBA, it has the roughly average expected noise for a device of similar power. For those who are looking for a less noisy device, we suggest the Westinghouse iGen4500DF. With just 52 dBA, it is one of the most quiet devices in this power range.
  • Thanks to an impressive running time of around 14 hours at 50% load, the P03602 benefits from a higher run time than many generators of a similar output. If extended autonomy is what matters most to you, the Predator 4375 could be an excellent choice, offering one of the longest run times among units in its power category, reaching around 16 hours.
  • The run time is important, but also hugely depends on the capacity of the fuel tank and doesn't mean much if we don't talk about fuel consumption as well. The generator utilizes approximately 0.36 GPH of gasoline at a 50% load, placing it within the typical range of fuel consumption seen in products of comparable wattage. If minimizing fuel usage is one of your key priorities, the Westinghouse iGen4500DF is one of the most efficient devices with similar power output, with a gasoline consumption of only 0.23 gallons per hour.

Here's a list of the most popular specific comparisons:

Price comparison

As you can see from these interactive charts, when compared to other 3500-4500W generators, the Firman P03602 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
  • RV Ready
  • High run time
AVERAGE SPECS:
  • Decent weight (108.5 lbs)
  • Acceptable noise (67 dBA)
  • Decent fuel efficiency
WEAKNESSES:
  • No electric start

Do you own the Firman P03602 and agree (or disagree) with these strengths and weaknesses?

Let us know and write your own review.

Features and Specifications

General
InverterNo
Parallel capableNo
RV readyYes
FuelGasoline
Engine208 cc Firman Max-Pro Series OHV 4-stroke
Starting systemRecoil
Warranty3 years
Power
VoltageAC: 120V 60 Hz
Running watts3,650 W
Starting watts4,550 W
Running amps30.4 amps
Peak amps37.9 amps
Run time @50% load14 h
Run time @25% loadUnknown
Features
GFCI outletsNo
Covered outletsYes
Automatic Voltage RegulationYes
AC outlets
  • 1x Duplex 120V 20A (5-20R)
  • 1x 120V 30A (L5-30R)
  • 1x 120V 30A (TT-30R)
DC outletsNo
Data centerVFT
IndicatorsLow oil
Fuel tankSteel, 5 gal
Fuel gaugeYes
Misc
Weight108.5 lbs
Approx. dimensions (L x W x H)24.8 x 21.7 x 21.7 in
Noise (lower limit)67 dBA
THD< 25%
ComplianceEPA
SecurityLow oil and overload protection
Spark arrestorYes
NeutralBonded to frame
Accessories includedOil, funnel, tool kit, and wheel kit
Country of originChina
SeriesPerformance
UPC840876136027

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 FIRMAN Power Equipment

Founded in 1999, Firman Power Equipment is a company with a short, but established history in the power equipment industry. Based in Arizona, the company offers an immense range of products, including power tools, automotive equipment, storage utilities, work wear, but most importantly, a wide selection of generators of all sizes, designs and outputs. Interestingly, Firman is a wholly owned subsidiary of the China National Machinery Industry Corporation - a somewhat well renowned company in China and acts as a de facto distributor of their products in the US.

Warranty Information

The Firman P03602 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 Firman generators, please consult Firman's warranty policies (opens in a new tab). Alternatively, you can also contact their Customer Support: 1-844-FIRMAN1 (844-347-6261).

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 homeAC (10,000 BTU)15002200
Refrigerator (energy star)1921192
Vacuum cleaner10751175
Radio100100
Pair of small speakers4545
Total2912 W3912 W
For campingRV AC (11,000 BTU)10101600
RV refrigerator180600
Electric grill16501650
Set of 5 LED light bulbs5555
Total2895 W3485 W
For workTable saw18004500
Total1800 W4500 W
What should the spark plug gap be set to (Asked May 01, 2021)

Electrode gap should be 0.028” to 0.031”.

Do I need a 240v outlet on Firman PO3602 to run a deep well pump rated at 240v.? (Asked May 03, 2021)

The unit does not have any 240V outlets. You can use a step-up transformer, but note that this will half the output amps.

Can this generator plug a washing machine ? (Asked May 16, 2021)

There should be no problem powering a standard residential washing machine with this unit.

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