1. Generators
  2. Firman
  3. Gas
  4. Propane
  5. 7125 Starting Watts
  6. 5700 Running Watts
Firman 7,125-Watt Portable Generator - 5,700 Running Watts - Propane or Gas - Electric Start

Firman 7,125-Watt Portable Generator - 5,700 Running Watts - Propane or Gas - Electric Start

Item # 333-H05751
lowest price pledge
Retail:$1,153.96
Our Price: $982.68
You Save: $171.28
Generators
This item qualifies for Free Shipping
Shipping Weight: 212 lbs
Quantity: 
Firman Generators - 333-H05751
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

In Use/Installed

Dual fuel generator uses propane or gas to supply power for the job site or emergency situations. Keeps the lights on and appliances running during a power outage. Simple, push button electric start. Includes easy-to-use propane hose with regulator. Call 800-298-8924 to order Firman generators part number 333-H05751 or order online at etrailer.com. Free expert support on all Firman products. Guaranteed Lowest Price and Fastest Shipping for Firman 7,125-Watt Portable Generator - 5,700 Running Watts - Propane or Gas - Electric Start. Generators reviews from real customers.
  • All Info
  • Q & A (2)
  • Photos
  • Why etrailer?

Firman Generators - 333-H05751

  • Firman
  • Gas
  • Propane
  • 7125 Starting Watts
  • 5700 Running Watts
  • No Inverter
  • Electric Start
  • 121 Volt Output
  • 240 Volt Output
  • Wheels
  • Outdoor Use Only

Dual fuel generator uses propane or gas to supply power for the job site or emergency situations. Keeps the lights on and appliances running during a power outage. Simple, push button electric start. Includes easy-to-use propane hose with regulator.


Features:

  • 7,125-Watt, dual fuel generator provides a portable power source
    • Use propane or gas during trips in your RV or in an emergency
  • Electric-start engine offers easy, push button startup
    • Recoil handle lets you pull start the engine if needed
  • 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
  • Whisper series muffler ensures efficient operation
  • Warning lights, voltage regulator, and spark arrestor promote accident-free use
  • Fold-down handle and 10" flat-free wheels provide easy mobility
  • Strong, tubular steel frame
  • Clean-running engine meets CARB and EPA standards


Specs:

  • Outlets:
    • (4) 120V 20-amp GFCI
    • (1) 120V 30-amp L5-30R
    • (1) 120V/240V 30-amp L14-30R
  • Starting (surge) power output:
    • Gas: 7,125 watts
    • Propane: 7,125 watts
  • Running (rated) power output:
    • Gas: 5,700 watts
    • Propane: 5,700 watts
  • Continuous run time at 1/2 load: 13 hours
  • 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
    • Horsepower: 11
  • Fuel type: gasoline or propane
    • Gas tank capacity: 8 gal
  • Oil type: SAE 10W-30
    • Capacity: 1.16 qt
  • Power line frequency: 60 Hz
  • Dry weight: 196 lbs
  • Dimensions: 29-13/16" long x 27-1/2" wide x 26-1/8" tall
  • Warranty:
    • 3-Year limited warranty for residential use
    • 180-Day limited warranty for commercial use

Includes:

  • 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


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

H05751 outlets

The Firman H05751 Dual Fuel generator produces 7,125 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 (4) 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. Lastly, it has (1) 120V/240V L14-30R twist-lock outlet that provides a connection point for an inlet box used in home backup power. The generator also has outlet covers to help keep out moisture and debris.


Easy Electric Start Engine

The generator's engine starts up easily at the push of a button. 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. Once you press the start button, the generator will turn on.


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. Once the generator is up and running, follow the recommended order of operation: connect the device with the highest starting watts first, like your air conditioner or refrigerator, then work your way down to the device with the lowest starting watts. By connecting devices in this order, you'll ensure the generator has enough power to start high-wattage loads.


Dual Fuel Capability

H05751 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 fuel is a cleaner option for the environment. Unlike some dual-fuel generators, this one doesn't lose power when using propane.


It also includes a 5-1/2' LPG hose to connect your propane tank. Once you have connected your generator, turn the fuel selector switch to the LPG position and start it up.


Safety Features

This generator comes with a number of safety features to protect you, the environment, and the generator itself. 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. The digital voltage regulator assists in minimizing voltage fluctuations which helps to maintain a steady flow of electricity. Also, a built-in spark arrestor helps prevent any sparking that might burn someone or start a fire. This arrestor has been certified by the USDA Forest Service.


Choosing a Generator

When choosing a generator, you need to match the generator's starting and running output with the electrical demands of the equipment 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.


Will This Generator Run My RV Air Conditioner?

At etrailer, we perform numerous tests on generators that put them through real-world experience. An extensive part of this testing includes starting and running RV air conditioners. The following table will help you decide if the e3200 inverter generator has enough power to handle this critical function in your RV.


Air ConditionerWill it start and run?
Single 13,500 BtuYes
Single 15,000 BtuYes
Dual 15,000 BtuYes

Running Watts and Starting Watts of Common Appliances


ApplianceRunning WattsStarting Watts
Air compressor (1/2 hp)1,0002,000
Air conditioner (15,000 Btu)1,600*
Air conditioner (13,500 Btu)1,300*
Air conditioner (10,000 Btu)1,000*
Blender400850
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

* The starting wattage on air conditioners can vary greatly depending on several factors, including the assistance of built-in capacitors and cold starts. Because of this, we can't list a standard starting wattage as every application can be different.


Determining Your Power Needs

The following section provides calculations for wattage estimates. This will give you an overall picture of your potential power usage and help you decide on the generator that is right for you.


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 compressor2,0001,000
Refrigerator1,600800
Microwave01,000
Blender850400

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.


2,000 + 800 + 1,000 + 400 = 4,200 total starting watts


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


1,000 + 800 + 1,000 + 400 = 3,200 total running watts


To run all of these devices simultaneously, you would require a generator with at least 4,200 starting watts and 3,200 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 compressor2,0001,000
Refrigerator1,600800
Microwave01,000
Blender850400

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


1,000 + 800 + 1,000 + 400 = 3,200 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 compressor2,000 +0 (nothing connected)= 2,000
2. Refrigerator1,600 +1,000 (air compressor)= 2,600
3. Microwave1,000* +1,800 (air compressor + refrigerator)= 2,800
4. Blender850 +2,800 (air compressor + refrigerator + microwave)= 3,650

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


850 + 2,800 = 3,650 highest total starting watts required


In order to run all of these devices simultaneously, you would require a generator with at least 3,650 starting watts and 3,200 running watts.



H05751 Firman 7125 Watt Dual Fuel Hybrid Portable Generator - Gas or Propane - Electric Start

Installation Details 333-H05751 Installation instructionsAlternate Instructions 333-H05751 Installation instructions


California residents: click here


0
0

Ask the Experts about this Firman Generators

  • Do the eTrailer Portable RV Inverter Generators Come With a Dual Fuel Mode
    The 6,000-Watt Portable RV Inverter Generators part # 333-0002-2-0007 are not offered with dual fuel as with most inverter generators. In order to obtain dual fuel you would need to go with a standard generator like the Firman 7,125-Watt Portable Generator part # 333-H05751 which does have a dual fuel mode along with a 7,125 starting and 5,700 running watt rating.
    view full answer...
  • Adding Generator to Jayco Trailer with Factory Dry Camping Package
    Based on my research it looks like the dry camping package on your Jayco consists of LP generator prep and extra LP capacity (bigger tanks). From what I can tell this generator prep basically means the camper is equipped to handle a larger LP generator (not the portable options that we currently carry) so that you can run your appliances through it with the flip of a switch. With that being said Jayco was pretty vague when I called them to try and get more details so I recommend contacting...
    view full answer...

Do you have a question about this Generator?




  • Why etrailer.com?

    At etrailer.com we guarantee:
  • Highest quality generators for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate generator information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Edited by:
Daron K
Updated by:
Nick H
Written by:
Alex H

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.


Product Experts Available Now!
Call 800-298-8924