The Firman P03628 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
Zoom on the Firman P03628
In summary, the Firman P03628 is a portable generator especially useful for:
- RV travellers who wish to upgrade their experience to another level
- People occasionally participating in sporting competitions, open-air performances and outdoor festivals
- Homeowners who want to be sure of their ability to power their fridges, cooking tools, heating and lighting equipment during power failures
The subsequent sections will explore in detail its power characteristics, the diverse outlets it provides, its overall portability, and the supplementary features it offers.
Power & Run Time
The Firman P03628 houses a 208 cc Firman Max-Pro Series OHV 4-stroke engine, which provides 120V, consumes gasoline and delivers a running wattage of 3,650W along with a peak wattage of 4,550W.
Featuring a noise rating of 75 dBA (just slightly more noisy than a shower), the generator is equipped with both a standard recoil pull-rope starting mechanism and a convenient and easy-to-use electric starter (battery included) for starting. For additional convenience, the P03628 may also be remotely started (key fob included).
The P03628'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).
Given the P03628's high Total Harmonic Distortion (THD) of less than 25%, it is advisable to avoid using it to power sensitive electronic devices.
Outlets
The control panel features the upcoming 4 AC outlets:
Thanks to its TT-30R receptacle (TT meaning 'Travel Trailer'), this Firman generator is RV Ready, ready to power your recreational vehicle with ease.
Portability
Measuring L23.2 x W21.7 x H21.7 in, the classic open frame construction of the Firman P03628 provides stability while enabling convenient maintenance access to components and adequate air cooling. The device has been designed for tough environments and demanding outdoor use.
Despite its 119.5 lbs, the generator falls under the category of 'portable,' signifying its movability, although its weight may hinder easy portability. Despite the restricted maneuverability, its wheel kit (⌀8") and its folding handle provides a solution, allowing for convenient shifting once the generator is positioned on the ground.
Features
The P03628's control panel
To facilitate status and activity monitoring, a convenient meter, providing voltage, frequency, and lifetime hours data are embedded in the control panel of the P03628.
In addition to this info, a light indicator on the device will signal if the oil level is too low.
Equipped with a built-in fuel gauge, the generator facilitates swift gas level checks.
As far as security is concerned, the generator can be used with a peace of mind, as it features an overload protection (circuit breaker) and an automatic low oil shut-off.
The P03628 also benefits from Firman’s CO Alert carbon monoxide shutdown, which automatically shuts down the engine when harmful levels of carbon monoxide accumulate around the generator or a CO Alert fault occurs.
With the basic documentation and an owner's manual (opens in a new tab), letting you start the generator quickly, the Firman P03628 also comes with several accessories, including: key fob, oil, tool kit and funnel.
The Firman P03628 versus other generators
The following charts are provided to give you an idea of how some of the key specs of the Firman P03628 compare to generators of similar power (between 3500 and 4500 W).
- Weighing in at 119.5 lbs, the Firman P03628 fits within the expected weight range for devices producing 3500 to 4500 rated watts. If you are concerned by weight, one of the champions in the above-mentioned power range is the Genmax GM4600iAEFIC, with a dry weight of just 58.4 pounds.
- When compared to devices able to produce a similar running wattage, this generator and its lowest emitted noise of 75 dBA is on the noisier side. If you value reduced noise levels, the Westinghouse iGen4500DF could be worth considering. It's one of the quietest generators in its power range, rated at 52 dBA.
- Thanks to an impressive running time of around 14 hours at 50% load, the P03628 benefits from a higher run time than many generators of a similar output. For those prioritizing autonomy, the Predator 4375 could be considered, as it offers one of the longest run times among generators with similar power output, reaching around 16 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. With an estimated fuel consumption of 0.36 GPH at a 50% load, this generator aligns with the average gasoline usage range of comparable products. If you're placing a high priority on fuel consumption, the Westinghouse iGen4500DF, with a low fuel consumption rate of 0.23 GPH, could be an option to consider.
Price comparison
As you can see from these interactive charts, when compared to other 3500-4500W generators, the Firman P03628 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
- In the expected price range
- CO Alert technology
- Several accessories included
- RV Ready
- Remote start
- High run time
- Decent weight (119.5 lbs)
- Decent fuel efficiency
- On the noisy side (75 dBA)
Features and Specifications
| Inverter | No |
|---|---|
| Parallel capable | No |
| RV ready | Yes |
| Fuel | Gasoline |
| Engine | 208 cc Firman Max-Pro Series OHV 4-stroke |
| Starting system | Recoil, Electric, Remote |
| Warranty | 3 years |
| Voltage | AC: 120V 60 Hz |
|---|---|
| Running watts | 3,650 W |
| Starting watts | 4,550 W |
| Running amps | 30.4 amps |
| Peak amps | 37.9 amps |
| Run time @50% load | 14 h |
| Run time @25% load | Unknown |
| GFCI outlets | No |
|---|---|
| Covered outlets | Yes |
| Automatic Voltage Regulation | Yes |
| AC outlets |
|
| DC outlets | No |
| Data center | VFT |
| Indicators | Low oil |
| Fuel tank | Steel, 5 gal |
| Fuel gauge | Yes |
| Weight | 119.5 lbs |
|---|---|
| Approx. dimensions (L x W x H) | 23.2 x 21.7 x 21.7 in |
| Noise (lower limit) | 75 dBA |
| THD | < 25% |
| Compliance | EPA, ANSI/PGMA G300-2023 |
| Security | Low oil and overload protection, CO monitoring |
| Spark arrestor | Yes |
| Neutral | Floating |
| Accessories included | Oil, funnel, tool kit, key fob, battery, and wheel kit |
| Country of origin | China |
| Series | Performance |
| UPC | 840876136287 |
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.
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 P03628 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?
| Item | Running Watts | Starting Watts | |
|---|---|---|---|
| At home | Dish washer | 1500 | 3000 |
| Refrigerator (energy star) | 192 | 1192 | |
| Vacuum cleaner | 1075 | 1175 | |
| Radio | 100 | 100 | |
| Pair of small speakers | 45 | 45 | |
| Total | 2912 W | 4412 W | |
| For camping | RV AC (11,000 BTU) | 1010 | 1600 |
| RV refrigerator | 180 | 600 | |
| Electric grill | 1650 | 1650 | |
| Set of 5 LED light bulbs | 55 | 55 | |
| Total | 2895 W | 3485 W | |
| For work | Table saw | 1800 | 4500 |
| Total | 1800 W | 4500 W |
Duplex 120v/20a outlets - does that mean 20a total from both or total 40a possible? (Asked September 25, 2020)
20A total from the duplex outlets
Wath is the oil capacity of a firman 3650 (Asked September 18, 2021)
Engine oil capacity is 20.3 fl.oz.
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