The catch
Westinghouse iGen8200TFc
Just because the outlet is 50A-shaped, do not assume the generator delivers 50A continuously at 240V.
Side by side
Westinghouse iGen8200TFc vs Westinghouse iGen12000TFc: 12000 brings extra natural-gas headroom and a 30A twist-lock connection
Quick verdict
The larger inverter is the one to get if you want natural-gas headroom and the extra 30A twist-lock.
Before you buy
Why, and what it costs you
A running load of 4,800W on natural gas
iGen8200TFc shows 480W of nominal margin, against 2,400W for iGen12000TFc. A negative number means the continuous rating has been exceeded.
Where this comes from
The measured total running load is assumed to be 4800W on natural gas. Margin = fuel-specific running watts minus 4800. Starting transients, altitude, temperature, power factor and per-leg limits are left out.
The catch
Westinghouse iGen12000TFc
A 50A-shaped outlet is not proof that the generator supplies 50A continuously at 240V.
Westinghouse iGen8200TFc
- Why pick it
- Your loads on natural gas stay under 5280W
- You prefer a wheeled 134.5lb enclosure for handling
- The catch
- Just because the outlet is 50A-shaped, do not assume the generator delivers 50A continuously at 240V.
Westinghouse iGen12000TFc
- Why pick it
- You need 7200W of running power on natural gas
- You can work with a wheeled 191lb enclosure
- The catch
- A 50A-shaped outlet is not proof that the generator supplies 50A continuously at 240V.
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What this page compares
Here, iGen8200TFc and iGen12000TFc are compared on fuel-specific power, starting demand, voltage and connection limits, ahead of choosing a generator.
The larger inverter is the one to get if you want natural-gas headroom and the extra 30A twist-lock.
Which one fits
Pick the situations that sound like you
A continuous natural gas load of 4,800W
Three fuels and inverter output are supported on both. On natural gas, the smaller machine is rated for 5280W continuously, against 7200W from the larger unit.
- Westinghouse iGen8200TFc
- Depends
- Westinghouse iGen12000TFc
- Depends
Moving the generator and starting it when the power is out
Dry weight is 134.5lb for the iGen8200TFc and 191lb for the iGen12000TFc. Wheels help on level ground, yet lifting either into a vehicle is not a casual one-person job.
- Westinghouse iGen8200TFc
- Depends
- Westinghouse iGen12000TFc
- Depends
Hooking up the specified appliances or the home inlet
L14-30R comes on the iGen12000TFc alongside 14-50R. The iGen8200TFc has a 14-50R plus a separate 120V TT-30R, so check the inlet and cord before you order.
- Westinghouse iGen8200TFc
- Depends
- Westinghouse iGen12000TFc
- Depends
The usable 240V current changes on natural gas
At 240V, the continuous natural-gas equivalents are 22A and 30A. A 50A receptacle therefore does not mean 50A of continuous output is available.
- Westinghouse iGen8200TFc
- Depends
- Westinghouse iGen12000TFc
- Depends
In practice
Differences you will notice
A running load of 4,800W on natural gas
iGen8200TFc shows 480W of nominal margin, against 2,400W for iGen12000TFc. A negative number means the continuous rating has been exceeded.
How we worked this out
The measured total running load is assumed to be 4800W on natural gas. Margin = fuel-specific running watts minus 4800. Starting transients, altitude, temperature, power factor and per-leg limits are left out.
A total starting event of 6,500W
Measured against this separately specified total starting demand, iGen8200TFc has 60W of published peak margin and iGen12000TFc has 3,300W.
How we worked this out
Take the combined load during one motor start as 6500W, counting the appliances already running. Subtract 6500 from the natural gas starting rating. That shows nothing about surge duration or whether the motor starts successfully.
The usable 240V current changes on natural gas
At 240V, the continuous natural-gas equivalents are 22A and 30A. A 50A receptacle therefore does not mean 50A of continuous output is available.
How we worked this out
5280 ÷ 240 = 22A. 7200 ÷ 240 = 30A. The load is assumed balanced at 240V with power factor 1.0. Limits on the individual 120V legs still matter.
Plug in your numbers
Can either generator run what you need?
This checks hard limits only. Personal preferences are left out of the math.
Westinghouse iGen8200TFc
Works with your numbersOn gasoline, it is rated for 6,600 running and 8,200 starting watts. With reserve, your load plan calls for 1,200 watts running and 2,900 watts starting.
Westinghouse iGen12000TFc
Works with your numbersOn gasoline, it is rated for 9,000 running and 12,000 starting watts. With reserve, your load plan calls for 1,200 watts running and 2,900 watts starting.
The estimate adds up the running watts of everything on at once, the biggest single startup surge and 15% headroom. Check each appliance label before you rely on it. Never run a fuel-burning generator indoors, in a garage or near doors, windows or vents.
Option A
Westinghouse, iGen8200TFc
iGen8200TFc
This enclosed tri-fuel inverter offers 120/240V and remote start. Its 6600W gasoline rating drops to 5940W on propane and 5280W on natural gas, which is why the fuel you pick has to go into your load calculation.
- Best for
- A tri-fuel inverter on wheels that offers 240V output
Facts we checked
- Gasoline output of 6600W running and 8200W starting
- Propane output of 5940W running and 7380W starting
- Natural gas output of 5280W running and 6560W starting
- Duplex 5-20R, 120V TT-30R and 120/240V 14-50R
Option B
Westinghouse, iGen12000TFc
iGen12000TFc
This large enclosed tri-fuel inverter is rated 9000W running on gasoline with a 12000W peak. Both 14-50R and L14-30R connections are included, and continuous ratings are lower on gaseous fuels.
- Best for
- Bigger home loads you manage carefully, on inverter power
Facts we checked
- Gasoline output of 9000W running and 12000W starting
- Propane output of 8100W running and 11000W starting
- Natural gas output of 7200W running and 9800W starting
- Duplex 5-20R plus 120/240V 14-50R and L14-30R
Spec by spec
Where they really differ
| Spec | Westinghouse iGen8200TFc | Westinghouse iGen12000TFc | In practice |
|---|---|---|---|
| Running and starting output on natural gas | 5,280W running / 6,560W starting | 7,200W running / 9,800W starting | Each of continuous load and brief starting demand has its own limit. |
| Handling layout | 134.5lb wheeled enclosure | 191lb wheeled enclosure | Look at the route out of storage and how it will get into a vehicle. |
| Connection panel | 120/240V 14-50R plus 120V TT-30R and duplex 5-20R | 120/240V 14-50R and L14-30R plus duplex 5-20R | Match the exact receptacle, breaker and cord to the system you intend. |
| Gasoline tank | 3.9 gallons | 7.9 gallons | Runtime at your load cannot be worked out from tank size alone. |
Trade-offs
What each pick costs you
With Westinghouse iGen8200TFc
- Propane and natural gas both rate lower than gasoline. Treat running load and motor starting demand as separate questions.
With Westinghouse iGen12000TFc
- Ratings are lower on propane or natural gas. Look at the running load and the motor starting demand on their own.
Change of plan
When the answer changes
Your loads on natural gas stay under 5280W
Go with Westinghouse iGen8200TFc. Three fuels and inverter output are supported on both. On natural gas, the smaller machine is rated for 5280W continuously, against 7200W from the larger unit.
You need 7200W of running power on natural gas
Go with Westinghouse iGen12000TFc. Dry weight is 134.5lb for the iGen8200TFc and 191lb for the iGen12000TFc. Wheels help on level ground, yet lifting either into a vehicle is not a casual one-person job.
Decision guide
How to decide
For natural-gas headroom and the additional 30A twist-lock, take the larger inverter.
Match the load list to the fuel
Three fuels and inverter output are supported on both. On natural gas, the smaller machine is rated for 5280W continuously, against 7200W from the larger unit.
Think about what each is like to live with
Dry weight is 134.5lb for the iGen8200TFc and 191lb for the iGen12000TFc. Wheels help on level ground, yet lifting either into a vehicle is not a casual one-person job.
Sort out the connection and installation
L14-30R comes on the iGen12000TFc alongside 14-50R. The iGen8200TFc has a 14-50R plus a separate 120V TT-30R, so check the inlet and cord before you order.
What this page can’t tell you
- These figures come from specification-based calculations. They are not measured generator or motor-start tests.
- Altitude, temperature, fuel supply and per-leg 120V limits can all lower usable output.
- A CO shutoff does not make indoor use safe, whether in a garage or under an enclosed shelter.
By the numbers
What the data shows
What we found across the generator sets we compare, plus the checked facts behind each finding.
How many fit
Only 2 of the 24 models checked meet every need here: “Power a refrigerator and the essential lights” and “Tie in through a transfer switch at home”.
2 models fit, out of 24 checkedShow the facts and the math
How we countedThe count uses each product's current fit ratings for “Power a refrigerator and the essential lights” and “Tie in through a transfer switch at home”. A need with no documented match is not counted.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Westinghouse iGen8200TFc |
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| Westinghouse iGen12000TFc |
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
Westinghouse iGen8200TFc
Your loads on natural gas stay under 5280W
See price & reviews on AmazonWestinghouse iGen12000TFc
You need 7200W of running power on natural gas
See price & reviews on AmazonEach link opens in a new tab.
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