Firman 10,000-Watt Portable Generator - 8,000 Running Watts - Propane or Gas - Electric Start

Firman 10,000-Watt Portable Generator - 8,000 Running Watts - Propane or Gas - Electric Start

Item # 333-H08051

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Firman No Inverter - 333-H08051
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  • Firman
  • Gas
  • Propane
  • 10000 Starting Watts
  • 8000 Running Watts
  • No Inverter
  • 120 Volt Output
  • 240 Volt Output
  • Electric Start
  • Outdoor Use Only
  • Wheels
Portable 10,000-watt generator supplies electricity for home, work, or play. Includes (2) 120V GFCI outlets, (1) 120V L5-30R outlet, (1) 120V/240V L14-30R outlet, and (1) 120V/240V 14-50R outlet. Dual-fuel capability allows use of gas or propane. Call 800-298-8924 to order Firman generators part number 333-H08051 or order online at etrailer.com. Free expert support on all Firman products. Guaranteed Lowest Price and Fastest Shipping for Firman 10,000-Watt Portable Generator - 8,000 Running Watts - Propane or Gas - Electric Start. Generators reviews from real customers.


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  • Q & A (8)
  • Photos
  • Why etrailer?

Firman Generators - 333-H08051

Portable 10,000-watt generator supplies electricity for home, work, or play. Includes (2) 120V GFCI outlets, (1) 120V L5-30R outlet, (1) 120V/240V L14-30R outlet, and (1) 120V/240V 14-50R outlet. Dual-fuel capability allows use of gas or propane.


Features:

  • 10,000-Watt generator provides portable power source
    • (2) 120V 20-Amp GFCI outlets power household appliances and tools
    • (1) 120V 30-Amp L5-30R twist-lock outlet powers large household appliances and tools
    • (1) 120V/240V 30-Amp L14-30R twist-lock outlet provides connection point for home backup power
    • (1) 120V/240V 50-Amp 14-50R outlet provides a RV connection point
  • Duel-fuel capability provides flexibility during trips or in an emergency
  • Electric-start engine offers easy, push button startup
    • Ergonomically-designed recoil handle reduces effort to pull start the engine if the need arises
  • 3-in-1 Data-Minder monitors voltage, frequency, and running hours
  • Firman 4-stroke engine uses standard unleaded gas or propane - no need to mix gas and oil
    • Cast iron cylinder sleeves help ensure long engine life
  • Whisper series muffler ensures efficient operation
  • Safety features promote accident-free use
    • Light-up indicator flashes when low oil level is detected
      • Engine automatically stops if oil level is too low for safe use
    • Push-to-reset circuit breakers stop power flow to connected devices if overload is detected
    • Automatic voltage regulator (AVR) helps minimize voltage fluctuations
    • USDA Forest Service certified spark arrester prevents release of flammable debris
  • Large-capacity, 8-gallon fuel tank
    • Easy-to-read fuel gauge lets you know when gas level is low
  • 10" Flat-free wheels and fold-down handle are included for easy mobility
  • Strong, tubular steel frame
  • Clean-running engine meets CARB and EPA standards
  • Outlet covers help to keep out moisture and debris
  • Includes:
    • Generator
    • Battery
    • 5-1/2' Propane hose with regulator
    • Folding handle
    • Support leg with vibration mounts
    • 10" flat-free wheels
    • Engine oil
    • Oil funnel
    • Spark plug wrench
    • 2 double open wrenches (10 mm and 12 mm)
    • Owner's manual
    • Quick reference guide


Specs:

  • Starting (surge) power output:
    • Gas: 10,000 watts
    • Propane: 9,050 watts
  • Running (rated) power output:
    • Gas: 8,000 watts
    • Propane: 7,250 watts
  • Continuous run time at 1/2 load: 12 hours
  • Dry weight: 212 lbs
  • Dimensions: 29-13/16" long x 27-1/2" wide x 26-1/8" tall
  • Noise level (normal conversation is 60 dB):
    • Measured at 25' away at 1/4 load in standard mode: 74 dB
  • Engine type: Firman Max-Pro Series 439-cc, single cylinder, air-cooled, 4-stroke OHV
  • Engine hp: 15
  • Fuel type: gasoline or propane
  • Fuel tank capacity: 8 gal
  • Oil capacity: 1.16 qt
  • Oil type: SAE 10W-30
  • Power line frequency: 60 Hz
  • Warranty:
    • 3-Year limited warranty for residential use
      • 1st Year parts and labor
      • 2nd and 3rd Year parts only
    • 180-Day limited warranty for commercial use
      • 90-Day parts and labor
      • 180-Day parts only


Notes:

  • Gas generators produce carbon monoxide, which is poisonous. For your safety, always be sure to operate this gas-powered generator outdoors.
  • Because this generator does not have a built-in inverter to control the electrical current, the voltage can fluctuate. Therefore, do not plug sensitive electronic devices such as a computer or television into the generator.

Certifications

Meets the following important certification standards:

  • US Environmental Protection Agency (EPA)
  • California Air Resources Board (CARB)

High-Output Capacity

H08051 outlets

The Firman H08051 Dual Fuel generator produces 10,000 watts of power to get you up and running whether you're at the campsite, at the worksite, or faced with an emergency. This powerful generator comes with (2) 120V GFCI protected outlets for safely powering household appliances, tools, and electronic devices. It features (1) 120V L5-30R twist-lock outlet for large appliances and motorized tools with greater electrical demands. Also, it has (1) 120V/240V L14-30R twist-lock outlet that provides a connection point for an inlet box used in home backup power. Lastly, it has (1) 120V/240V 50-Amp 14-50R outlet for a RV connection, ensuring you'll have access to electricity no matter where you take your RV or if there's a power outage at the campground.


Easy Electric Start Engine

The generator's engine is designed to start up easily so you can power up faster and without hassle. The key to this easy startup is the electric starter. With this starter, turning on your generator becomes remarkably easy and worry-free. Simply turn the fuel valve to "on" and flip the engine switch to the "run" position. Then, push the battery power restore switch for a few seconds and release. At the push of a button on the control panel, the generator will fire up and be ready to go.


Before starting your generator, ensure nothing is connected to the outlets. Start your generator and let the engine run for a few minutes to warm up and stabilize. Check to make sure the circuit breaker is in on position before continuing. Once the generator is up and running, you may connect your electrical loads. To follow the recommended order of operation, connect the device with the highest starting watts first, like your air conditioner or refrigerator, and work your way down to the device with the lowest starting watts. By connecting devices in this order, you can make the most of your generator's capacity through connecting high wattage loads when there is more power available.


Dual Fuel Capability

H08051 dual fuel

For flexibility and convenience during road trips or in an emergency, this generator can use gasoline or propane to power the engine. In addition, using propane as an alternative to gasoline is a cleaner option for the environment. However, while using propane the power output slightly decreases compared to gasoline.


  • Starting (surge) power output:
    • Gas: 10,000 watts
    • Propane: 9,050 watts
  • Running (rated) power output:
    • Gas: 8,000 watts
    • Propane: 7,250 watts

This generator includes a 5-1/2' LPG hose with regulator for connecting to a propane tank. Once you have connected your generator, turn the fuel selector switch to the LPG position. After that, you can start the generator with the push button electric start or pull start.


Safety Features

The H08051 Dual Fuel generator comes with a number safety features designed to protect both you and the generator itself. The 3-in-1 Data-Minder monitors voltage, frequency, and running hours. Simply press the select button to switch the information on the digital display.


When the generator is low on oil, a light-up indicator flashes and the engine will automatically shut down to prevent damage. If an overload is detected, either by exceeding the generator's limits or a power surge, the circuit breaker will stop supplying power to the connected devices. A built-in spark arrester helps prevent any sparking that might burn someone or start a fire, protecting both you and the environment. This arrester has been certified by the USDA Forest Service. Also, an automatic voltage regulator assists in minimizing voltage fluctuations which helps to maintain a steady flow of electricity.


Choosing a Generator

To choose a generator that meets your needs, you must match the size of the generator (that is, the starting output and running output in watts) with the electrical demands of the equipment that you want to operate.


Power Demands

Starting (surge) wattage is the power a device requires at startup. Running (rated) wattage is the power needed to keep the device running. A large appliance with an electric motor such as a furnace, refrigerator, air conditioner, or washing machine may require 2 to 3 times more starting wattage than running wattage.


It is always best to start your generator with no load connected, then add each device one at a time. Additionally, a good practice to consider is connecting your devices in order from highest starting watts to lowest starting watts. As you connect and start devices, your available wattage decreases. This order of operation allows you to start devices with the highest power demands when there is more power available.


ApplianceRunning WattsStarting Watts
Air compressor (1/4 hp)1,0001,600
Air conditioner (15,000 Btu)1,8003,500
Air conditioner (13,500 Btu)1,5002,800
Air conditioner (10,000 Btu)1,2001,800
Cell phone charger110
Clock radio40
Coffee maker (high setting)1,0660
Crock pot (low setting)1260
Crock pot (high setting)3740
Desktop computer150 - 3500
DVD player140
Electric drill (3/8" / 4 amps)450600
Electric space heater (high setting)1,4500
Floor fan1000
Hair dryer (low setting)1600
Hair dryer (high setting)1,3000
LCD television (32")680
Microwave1,0000
Refrigerator8001,600
Washing machine1,1502,250
Work light (quartz halogen)1,0000

Determining Your Power Needs

When choosing a generator, knowing the amount of power you will need is crucial to your decision. Whether you are preparing for an emergency situation at home or taking a weekend trip in the RV, planning out your application is essential. The two calculations below provide power estimations that will help point you to a generator that is right for your needs.


Industry Standard Calculation

The Industry Standard Calculation is a quick and easy way to determine your required wattage. It may provide some padding in your wattage requirements, which could give you more power than you actually need, but you shouldn't have to worry about not having enough power. The following steps will help you quickly calculate the correct size generator to meet your application.


As stated earlier, you should always start your generator without any load, and then connect each device one at a time. The following calculation requires this approach to work. However, using this calculation removes the worry of connecting devices in a certain order.


1. Determine the starting watts and running watts for the devices that you want to plug into the generator.

a. Find the starting (surge) watts and running (rated) watts for each device that you want to plug into the generator. Look for a sticker or plate on each device or check your owner's manuals.

b. If your device or manual only shows amps and volts, watts can also be determined through a simple formula. (Amps x Volts = Watts)

c. List all of your starting watts and running watts as seen in Table 1 below.


Table 1

Example DevicesStarting WattsRunning Watts
Air conditioner (10,000 Btu)1,8001,200
Refrigerator1,600800
Electric drill600450
Floor fan0100

2. To find the total starting watts required, add the starting watts for the device with the highest value to the running watts of all the other devices from Table 1.


1,800 + 800 + 450 + 100 = 3,150 total starting watts


3. To find the total running watts, add all of the running watts together from Table 1.


1,200 + 800 + 450 + 100 = 2,550 total running watts


To run all of these devices simultaneously, you would require a generator with at least 3,150 starting watts and 2,550 running watts.


Advanced Precise Calculation

While the method for calculating your power needs outlined above will work, it isn't the most precise. If you aren't afraid of doing a little more math, you can use the Advanced Precise Calculation to get a more accurate idea of how much power you will need and potentially save yourself some money. Because the calculation above pads in enough power to ensure you can start your devices in any order, it may point you to a bigger and more expensive generator than you need. However, by following the more regimented, order-of-operations calculation below, you'll get a much more precise idea of how much power you need, which could in turn point you to a smaller and less expensive generator.


Again, you should always start your generator without any load, and then connect each device one at a time. The following calculation also requires that you start your devices in order from highest starting watts to lowest starting watts. When you connect devices in this order, you can start high demand devices when there is more power available.


1. Determine the starting watts and running watts for each device that you want to plug into the generator.

a. Find the starting (surge) watts and running (rated) watts for each device that you want to plug into the generator. Look for a sticker or plate on each device or check your owner's manuals.

b. If your device or manual only shows amps and volts, watts can also be determined through a simple formula. (Amps x Volts = Watts)

c. List out these devices from highest starting watts to lowest starting watts as seen in Table 2 below.


Table 2

Example DevicesStarting WattsRunning Watts
Air conditioner (10,000 Btu)1,8001,200
Refrigerator1,600800
Electric drill600450
Floor fan0100

2. To find the total running watts, add all of the running watts together from Table 2.


1,200 + 800 + 450 + 100 = 2,550 total running watts


3. In Table 3, shown below, the values from Table 2 are used to calculate the highest total starting watts required as devices are connected and running. This number represents the highest power requirement you will encounter as you connect all of your devices to the generator. To find this, add the starting watts of each new device you connect to the combined running watts of all connected devices. The highest of these numbers will be the total starting watts required. And again, remember to always connect devices in order from highest starting watts to lowest starting watts.


Table 3

DeviceStarting WattsRunning Watts of All Connected DevicesTotal Starting Watts Required
1. Air conditioner1,800 +0 (nothing connected)= 1,800
2. Refrigerator1,600 +1,200 (AC)= 2,800
3. Electric drill600 +2,000 (AC + refrigerator)= 2,600
4. Floor fan100* +2,450 (AC + refrigerator + electric drill)= 2,550

* Even though the floor fan does not have starting watts listed, you have to account for the power needed to actually run it.


1,600 + 1,200 = 2,800 highest total starting watts required


In order to run all of these devices simultaneously, you would require a generator with at least 2,800 starting watts and 2,550 running watts. The starting watts are determined by the highest total starting watts required during the calculation in Table 3/Step 3. The running watts are determined by the total running watts from Step 2.



H08051 Firman 10000 Watt Dual Fuel Hybrid Portable Generator - Gas or Propane - Electric Start



333-H08051 Installation InstructionsInstallation Details 333-H08051 Installation instructions333-H08051 Installation InstructionsAlternate Instructions 333-H08051 Installation instructions


California residents: click here


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Ask the Experts about this Firman Generators

Do you have a question about this Generator?


  • Total Harmonic Distortion on Firman 10,000 Watt Generator # 333-H08051
  • I spoke with my contact at Firman and he said that the 10,000 Watt Portable Generator # 333-H08051 has a total harmonic distortion of 25 percent, which is pretty standard for this type of generator. For a "clean electricity" unit you will need to go with an inverter generator like the etrailer.com # 333-0003-2-0007. These 2 single generators can be ran parallel to provide 6,000 watts of starting power and 5,500 watts of running power. This is the highest rated inverter generator set...
    view full answer...

  • Comparing A Firman Open Frame Generator and etrailer Inverter
  • The difference between the Firman 10,000-Watt Portable Generator part # 333-H08051 and the etrailer 6,000-Watt Portable Inverter Generators part # 333-0003-2-0007 is not their ability to protect from power surges as they both have this feature but rather the type of electricity they produce. The generator has a total harmonic distortion of 25 percent which means it would not be ideal for sensitive electronics such as a flat screen TV or computer. The inverters only have a total harmonic...
    view full answer...

  • Is the Firman 10,000-Watt Portable Generator Wound With 100 Copper or Aluminium Coated Copper
  • I spoke to my contact at Firman and they informed me that the Firman 10,000-Watt Portable Generator part # 333-H08051 is wound with aluminium coated copper wire which gives it a harmonic distortion of 25%. If you need a lower harmonic distortion you would have to go with an inverter generator set, the etrailer 6,000-Watt Portable Inverter Generators part # 333-0003-2-0007 is the highest wattage we offer at around less than 3% harmonic distortion. In regards to longevity, the aluminium coated...
    view full answer...

  • Power Needed for Furrion AC for Van Conversion
  • I definitely appreciate both the fact that you are trying to keep your dog cool and trying to learn, though I should say there isn't going to be an air conditioner that can run indefinitely, and something that runs for long periods of time is going to use up a ton of power. So if you want to use the Furrion Chill Rooftop RV Air Conditioner # FACR14SA-BL - which will also require the Air Distribution Box for Furrion Chill RV Air Conditioner # FACT11MA-PS - powering it for long periods...
    view full answer...

  • Fuel Consumption of Firman 10,000-Watt Portable Generator # 333-H08051 Running On Propane
  • You will get on LPG approx 4-6 hours running at 50% load on a standard 20lbs propane tank with the Firman 10,000-Watt Portable Generator # 333-H08051. Please keep in mind heat, elevations, can effect run times.
    view full answer...

  • Using Generators to Power RV At High Altitudes
  • When you get to higher elevations (typically right in the range where you recently camped - 6,000 to 8,000 feet above sea level) generators do have a tougher time running efficiently due to a few factors but mainly because the lower oxygen density requires more airflow for the mix of air and fuel. Many generators are indeed compatible with separate "high altitude" kits that allow them to run to the best of their ability in this environment. We don't currently carry Yamaha generators...
    view full answer...

  • Will the Firman 10,000 Watt Generator Work With a Miller 200 Wire Feed Welder
  • In order to confirm with absolute certainty, I would need to know the exact model number of your welder. That said, the owner's manual should have the power requirements that you need to be able to determine if you can use the Firman 10,000-Watt Portable Generator part # 333-H08051. I did however speak with Miller and they stated that a 10,000 watt generator like the above can be used with most of their smaller wire feed welders.
    view full answer...

  • Run Time Length For Firman 10,000-Watt Generator on Gas versus LP
  • I contacted Firman directly regarding the Firman 10,000-Watt Portable Generator # 333-H08051 run times on both gas and LP. For LP, run time at 50% load is 4-6 hours on a 5 LB tank. On Gasoline the run time at 50% load can be up to 12 hours on an 8 gallon fuel tank. It's important to remember these run times can be affected by elevation, temperature, and other factors.
    view full answer...


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