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

  • Briggs & Stratton 30742
  • Ryobi RY909500
  • Model 30742
    Model 30742

    Briggs & Stratton 8,000W Gas Generator

    8000W
    Running
    0 dB
    Noise
    View details
  • Model RY909500
    Model RY909500

    Ryobi 8,000W Gas Generator

    8000W
    Running
    85 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
SpecificationBriggs & Stratton 30742Ryobi RY909500
General
Product type
Generator
Generator
Fuel
Gasoline
Gasoline
InverterNoNo
Parallel capableNoNo
RV readyNoNo
Running watts
Winner: Winner: 8000 W
Winner: Winner: 8000 W
Starting watts
Winner: Winner: 10000 W
9500 W
Noise (lower limit)
0 dB
Winner: Winner: 85 dB
Weight
246 lbs
Winner: Winner: 198 lbs
Run time @50% load
Winner: Winner: 9 h
7.5 h
Run time @25% load
Not available
Not available
Fuel tank
7.5 gal
6 gal
Fuel gaugeYesNo
Approx. dimensions (L × W × H)
28.4 x 30.5 x 29.1
31 x 29 x 24
Electrical
Voltage (AC)
120/240
120/240
Voltage (DC)
Not available
Not available
GFCI outletsYesYes
Covered outletsYesYes
Automatic Voltage RegulationYesYes
THD
Not available
<20% %
Engine
Engine
Briggs & Stratton OHV 4-stroke
500 cc OHV 4-stroke
Alternator
Not available
Not available
Starting system
Recoil, Electric
Recoil
Warranty
Warranty
3 years
3 years
Power by fuel
GasolineNot availableNot available
Running watts
8000 W
8000 W
Starting watts
10000 W
9500 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
7.5 h
Run time @25% load
Not available
Not available
Other
Data center
Not available
Not available
Indicators
false
false
Compliance
EPA
EPA
Security
Not available
Not available
Spark arrestorYesYes
Neutral
Bonded to frame
Bonded to frame
UPC
11675307424
46396058553
Core / High-priority specs
Running Watts (Gasoline)
8000
8000
Starting Watts (Gasoline)
10000
9500
Runtime @ 50% Load (Gasoline)
9
7.5
AC Outlet Types
2x Duplex 120V 20A (5-20R) GFCI; 1x 120/240V 30A (L14-30R)
2x Duplex 120V 20A (5-20R) GFCI1x 120/240V 30A (L14-30R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
Briggs & Stratton OHV 4-stroke
500 cc OHV 4-stroke
Engine Displacement
420
500
Runtime & fuel system
Runtime @ 50% Load (Gasoline)
9
7.5
Safety & compliance
Overload Protection System
Low oil and overload protection, CO monitoring
Low oil and overload protection
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesYes
Included equipment
Starting Components
Recoil, Electric
Not available
Included Accessories
Oil, battery, and wheel kit
Oil and wheel kit
Warranty & identification
Commercial Warranty
3
3
Additional specs
Summary
The Briggs & Stratton 30742 is an 8,000-watt gasoline generator built for job sites and home backup power. Its 10,000-watt peak output handles motor startup surges, while the dual-voltage 120/240V configuration powers both household circuits and heavy equipment like air compressors or welders.
The Ryobi RY909500 is a 9500W Portable Gas Generator featuring a 500cc OHV engine, delivering 8000 running watts and 9500 starting watts. It offers a 7.5-hour runtime at 50% load, making it ideal for storm backup and jobsite use.
  • Most Powerful
    Briggs & Stratton 30742
    8000W running
  • Quietest
    Ryobi RY909500
    85 dB
  • Longest Runtime
    Briggs & Stratton 30742
    9h at 50% load
Where to buy
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Briggs & Stratton 30742
Store links
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Ryobi RY909500
Store links
No links yet.
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