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Select up to 4 generators to compare specs, power output, noise levels, runtime and more. Your compare URL is shareable.

  • Firman T08072
  • Predator 71386
  • Model T08072
    Model T08072

    Firman 8,000W Tri-Fuel Generator

    8000W
    Running
    74 dB
    Noise
    View details
  • Model 71386
    Model 71386

    Predator 10,000W Tri-Fuel Generator

    10000W
    Running
    78.5 dB
    Noise
    View details
Quick charts
Each chart uses its own Y-axis scale (so numbers are comparable within a chart).
Running watts
W
Starting watts
W
Noise
dB
Runtime @50%
h
Running watts by fuel
Shows how output changes across gasoline/propane/natural gas (when available).
Generator Specifications Comparison
SpecificationFirman T08072Predator 71386
General
Product type
Generator
Generator
Fuel
Tri-Fuel
Tri-Fuel
InverterNoNo
Parallel capableNoNo
RV readyYesNo
Running watts
8000 W
Winner: Winner: 10000 W
Starting watts
10000 W
Winner: Winner: 13000 W
Noise (lower limit)
Winner: Winner: 74 dB
78.5 dB
Weight
Winner: Winner: 213 lbs
226 lbs
Run time @50% load
12 h
Winner: Winner: 12.1 h
Run time @25% load
12 h
Not available
Fuel tank
8 gal
Not available
Fuel gaugeYesNo
Approx. dimensions (L × W × H)
29.8 x 27.5 x 26.1
30.25 x 29.2 x 27.2
Electrical
Voltage (AC)
120/240
120/240V
Voltage (DC)
Not available
Not available
GFCI outletsYesNo
Covered outletsYesNo
Automatic Voltage RegulationYesNo
THD
Not available
Not available
Engine
Engine
439 cc OHV 4-stroke.
Not available
Alternator
Not available
Not available
Starting system
Recoil, Electric
Not available
Warranty
Warranty
3 years
Not available
Power by fuel
GasolineNot availableNot available
Running watts
8000 W
Not available
Starting watts
10000 W
Not available
Running amps (120V)
Not available
Not available
Running amps (240V)
Not available
Not available
Peak amps (120V)
Not available
Not available
Peak amps (240V)
Not available
Not available
Run time @50% load
12 h
Not available
Run time @25% load
Not available
Not available
Natural gasNot availableNot available
Running watts
5500 W
Not available
Starting watts
6900 W
Not available
Running amps (120V)
Not available
Not available
Running amps (240V)
Not available
Not available
Peak amps (120V)
Not available
Not available
Peak amps (240V)
Not available
Not available
Run time @50% load
Not available
Not available
Run time @25% load
Not available
Not available
PropaneNot availableNot available
Running watts
7250 W
Not available
Starting watts
9050 W
Not available
Running amps (120V)
Not available
Not available
Running amps (240V)
Not available
Not available
Peak amps (120V)
Not available
Not available
Peak amps (240V)
Not available
Not available
Run time @50% load
Not available
Not available
Run time @25% load
Not available
Not available
Other
Data center
Not available
Not available
Indicators
true
Not available
Compliance
CARB, EPA, ANSI/PGMA G300-2023
Not available
Security
Not available
Not available
Spark arrestorYesNo
Neutral
Bonded to frame.
Not available
UPC
840876180723
Not available
Core / High-priority specs
Running Watts (Gasoline)
8000
Not available
Running Watts (Propane)
7250
Not available
Running Watts (Natural Gas)
5500
Not available
Starting Watts (Gasoline)
10000
Not available
Starting Watts (Propane)
9050
Not available
Starting Watts (Natural Gas)
6900
Not available
Runtime @ 50% Load (Gasoline)
12
Not available
AC Outlet Types
1x Duplex 120V 20A (5-20R) GFCI; 1x 120V 30A (L5-30R); 1x 120/240V 30A (L14-30R); 1x 120/240V 50A (14-50R)
Not available
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
439 cc OHV 4-stroke
Not available
Engine Displacement
439
458
Cylinder Sleeve
Cast iron sleeve
Not available
Runtime & fuel system
Runtime @ 50% Load (Gasoline)
12
Not available
Safety & compliance
Overload Protection System
Low oil and overload protection.
Not available
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesYes
Included equipment
Mobility Components
Yes
Not available
Included Accessories
Oil, funnel, tool kit, natural gas hose with NPT adapter, propane hose, battery, and wheel kit.
Not available
Warranty & identification
Commercial Warranty
3
Not available
Additional specs
Summary
The Firman T08072 is an 8,000-watt tri-fuel generator built for users who need flexibility across fuel sources and sustained power output. Running on gasoline, propane, or natural gas, this unit delivers 10,000 peak watts on startup, enough to handle simultaneous demands like air compressors, power tools, and household appliances. The tri-fuel capability means users can switch fuels based on availability and cost, a significant advantage for job sites, RV travel, or emergency backup where fuel supply chains vary. On gasoline, the T08072 runs at full 8,000 watts. On propane, output drops to 7,250 watts. On natural gas, it falls to 5,500 watts. This tiered output reflects the energy density of each fuel type and shapes what users can realistically power during extended outages or remote work. The 8-gallon tank delivers 12 hours of runtime at both 25% and 50% load on gasoline, meaning users can operate a moderate load overnight without refueling. For job sites and backup power scenarios, this runtime eliminates mid-shift fuel stops.
The PREDATOR 13,000 Watt Tri-Fuel Portable Generator offers versatile power options, running on gasoline, propane, or natural gas. It features a remote start capability and CO SECURE Technology for enhanced safety, making it suitable for emergencies, jobsites, and home backup.
  • Most Powerful
    Predator 71386
    10000W running
  • Quietest
    Firman T08072
    74 dB
  • Longest Runtime
    Predator 71386
    12.1h at 50% load
Where to buy
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Firman T08072
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Predator 71386
Store links
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