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Compare Generators Side-by-Side

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

  • Powermate PM3800
  • Cat RP12000 E
  • Model PM3800
    Model PM3800

    Powermate 3,000W Gas Generator

    3000W
    Running
    0 dB
    Noise
    View details
  • Model RP12000 E
    Model RP12000 E

    Cat 12,000W Gas Generator

    12000W
    Running
    0 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
SpecificationPowermate PM3800Cat RP12000 E
General
Product type
Generator
Generator
Fuel
Gasoline
Gasoline
InverterNoNo
Parallel capableNoNo
RV readyNoYes
Running watts
3000 W
Winner: Winner: 12000 W
Starting watts
3800 W
Winner: Winner: 15000 W
Noise (lower limit)
0 dB
0 dB
Weight
Winner: Winner: 96 lbs
350 lbs
Run time @50% load
Winner: Winner: 14 h
11.7 h
Run time @25% load
21 h
Not available—
Fuel tank
5 gal
13.2 gal
Fuel gaugeYesYes
Approx. dimensions (L × W × H)
23.8 x 18.1 x 19.1
35.7 x 32.7 x 35.8
Electrical
Voltage (AC)
120
120/240
Voltage (DC)
Not available—
12
GFCI outletsNoYes
Covered outletsYesYes
Automatic Voltage RegulationNoYes
THD
Not available—
5 %
Engine
Engine
212 cc OHV 4-stroke
670 cc Rato OHV V-Twin
Alternator
Not available—
Not available—
Starting system
Recoil
Electric
Warranty
Warranty
3 years
2 years
Power by fuel
GasolineNot available—Not available—
Running watts
3000 W
12000 W
Starting watts
3800 W
15000 W
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
14 h
11.7 h
Run time @25% load
21 h
Not available—
Other
Data center
Not available—
Not available—
Indicators
false
false
Compliance
EPA
CARB, EPA
Security
Not available—
Not available—
Spark arrestorYesYes
Neutral
Floating
true
UPC
696471080339
815683023891
Core / High-priority specs
Running Watts (Gasoline)
3000
12000
Starting Watts (Gasoline)
3800
15000
Runtime @ 50% Load (Gasoline)
14
11.7
Runtime @ 25% Load (Gasoline)
21
Not available—
AC Outlet Types
2x Duplex 120V 20A (5-20R)
2x Duplex 120V 20A (5-20R) GFCI; 2x 120V 30A (L5-30R); 1x 120/240V 30A (L14-30R); 1x 120/240V 50A (14-50R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
212 cc OHV 4-stroke
670 cc Rato OHV V-Twin
Engine Displacement
212
670
Engine Oil Type
10W-30 / SAE 30
Not available—
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
21
Not available—
Runtime @ 50% Load (Gasoline)
14
11.7
Safety & compliance
Overload Protection System
Low oil and overload protection
Low oil and overload protection
Low Oil ProtectionYesYes
Included equipment
Starting Components
Oil
Battery, Battery Charger, Wheel Kit
Included Accessories
Oil
Oil, funnel, tool kit, battery charger, battery, and wheel kit
Warranty & identification
Commercial Warranty
3
Not available—
Part Number
P0081100
502-3700
Additional specs
Summary
The Powermate PM3800 is a durable and compact portable generator, ideal for home use and DIY projects. It features a Generac 212cc OHV engine, delivering 3800 starting watts and 3000 running watts. The generator offers a 21-hour runtime at 25% load, facilitated by a 5-gallon fuel tank. Its POWERDIAL™ simplifies the startup process with an integrated off/run/choke knob.
The Cat RP12000 E is a 12,000-watt gasoline generator built for job sites, construction crews, and homeowners who need sustained power for multiple heavy tools or appliances simultaneously. The 15,000-watt peak output handles startup surges from air compressors, circular saws, and welders without stalling. At 350 pounds, this is a stationary or semi-portable unit. It ships with a wheel kit, battery charger, and full tool set, meaning users can operate it immediately without additional purchases.
  • Most Powerful
    Cat RP12000 E
    12000W running
  • Quietest
    dB
  • Longest Runtime
    Powermate PM3800
    14h at 50% load
Where to buy
Prices can change. We update these automatically.
Powermate PM3800
Store links
No links yet.
Cat RP12000 E
Store links
No links yet.
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