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  • DEWALT DXGNR8000
  • Cat RP5500
  • Model DXGNR8000
    Model DXGNR8000

    DEWALT 8,000W Gas Generator

    8000W
    Running
    0 dB
    Noise
    View details
  • Model RP5500
    Model RP5500

    Cat 5,500W Gas Generator

    5500W
    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
SpecificationDEWALT DXGNR8000Cat RP5500
General
Product type
Generator
Generator
Fuel
Gasoline
Gasoline
InverterNoNo
Parallel capableNoNo
RV readyNoNo
Running watts
Winner: Winner: 8000 W
5500 W
Starting watts
Winner: Winner: 10000 W
6875 W
Noise (lower limit)
0 dB
0 dB
Weight
183 lbs
Winner: Winner: 178 lbs
Run time @50% load
9 h
Winner: Winner: 15 h
Run time @25% load
Not available
Not available
Fuel tank
7.5 gal
7.9 gal
Fuel gaugeNoYes
Approx. dimensions (L × W × H)
27.3 x 27.4 x 28.5
32.9 x 27.4 x 24.7
Electrical
Voltage (AC)
120/240
120/240
Voltage (DC)
Not available
Not available
GFCI outletsYesYes
Covered outletsYesYes
Automatic Voltage RegulationYesYes
THD
Not available
Not available
Engine
Engine
Dewalt OHV 4-stroke, 420 cc
300 cc OHV 4-stroke
Alternator
Not available
Not available
Starting system
Recoil, Electric
Recoil
Warranty
Warranty
3 years
2 years
Power by fuel
GasolineNot availableNot available
Running watts
8000 W
5500 W
Starting watts
10000 W
6875 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
9 h
15 h
Run time @25% load
Not available
Not available
Other
Data center
Not available
Not available
Indicators
false
false
Compliance
CARB, EPA
CARB, EPA
Security
Not available
Not available
Spark arrestorYesYes
Neutral
true
Not available
UPC
696471074536
815683020036
Core / High-priority specs
Running Watts (Gasoline)
8000
5500
Starting Watts (Gasoline)
10000
6875
Runtime @ 50% Load (Gasoline)
9
15
AC Outlet Types
2x Duplex 120V 20A (5-20R); 1x 120/240V 30A (L14-30R)
2x Duplex 120V 20A (5-20R) GFCI, 1x 120/240V 30A (L14-30R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
OHV 4-stroke
OHV 4-stroke
Engine Displacement
420
300
Engine Oil Type
Not available
SAE 30 or 10W-30
Runtime & fuel system
Runtime @ 50% Load (Gasoline)
9
15
Safety & compliance
Overload Protection System
Low oil and overload protection
Low oil and overload protection
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesNo
Included equipment
Included Accessories
Oil, battery charger, battery, and wheel kit
Oil, funnel, tool kit, and wheel kit
Warranty & identification
Commercial Warranty
3
Not available
Part Number
DXGNR8000E
502-3686
Additional specs
Summary
The DEWALT DXGNR8000 is an 8,000-watt gasoline generator built for job sites and temporary power needs. Its dual-voltage output and heavy-duty construction handle both household circuits and professional equipment, making it suitable for contractors and homeowners managing extended outages or remote work.
The Cat RP5500 is a 5500-watt gasoline generator built for homeowners, contractors, and outdoor enthusiasts who need reliable backup power without the complexity of larger units. This wattage tier handles most household circuits simultaneously, meaning you can run a refrigerator, well pump, and power tools at the same time, but not your entire home's air conditioning system. The 6875-watt peak capacity gives it the muscle to start high-inrush devices like compressors and sump pumps without stalling. Because the RP5500 runs on gasoline, fuel is available at any gas station, eliminating the supply chain friction of propane or diesel models. The 7.9-gallon tank paired with 15-hour runtime at half load means you refuel roughly once per day under typical use, not every few hours.
  • Most Powerful
    DEWALT DXGNR8000
    8000W running
  • Quietest
    dB
  • Longest Runtime
    Cat RP5500
    15h at 50% load
Where to buy
Prices can change. We update these automatically.
DEWALT DXGNR8000
Store links
No links yet.
Cat RP5500
Store links
No links yet.
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