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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.

  • Briggs & Stratton 30814 P4500 PowerSmart
  • NorthStar c8000s
  • Model 30814 P4500 PowerSmart
    Model 30814 P4500 PowerSmart

    Briggs & Stratton 3,700W Gas Generator

    3700W
    Running
    60 dB
    Noise
    View details
  • Model c8000s
    Model c8000s

    NorthStar 6,600W Gas Generator

    6600W
    Running
    73 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 30814 P4500 PowerSmartNorthStar c8000s
General
Product type
Generator
Generator
Fuel
Gasoline
Gasoline
InverterYesNo
Parallel capableNoNo
RV readyNoNo
Running watts
3700 W
Winner: Winner: 6600 W
Starting watts
4500 W
Winner: Winner: 8000 W
Noise (lower limit)
Winner: Winner: 60 dB
73 dB
Weight
Winner: Winner: 104 lbs
280 lbs
Run time @50% load
Not available—
Winner: Winner: 10.6 h
Run time @25% load
16 h
Not available—
Fuel tank
3.5 gal
8 gal
Fuel gaugeYesYes
Approx. dimensions (L × W × H)
24.5 x 17.6 x 20.36
41 x 32 x 29
Electrical
Voltage (AC)
120
120/240
Voltage (DC)
5
Not available—
GFCI outletsNoYes
Covered outletsYesYes
Automatic Voltage RegulationYesYes
THD
3 %
< 5% %
Engine
Engine
Briggs & Stratton OHV 4-stroke 224 cc
Honda GX390 OHV 4-stroke
Alternator
Not available—
Not available—
Starting system
Recoil, Electric, Remote
Recoil, Electric
Warranty
Warranty
3 years
4 years
Power by fuel
GasolineNot available—Not available—
Running watts
3700 W
6600 W
Starting watts
4500 W
8000 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
Not available—
10.6 h
Run time @25% load
16 h
Not available—
Other
Data center
Not available—
Not available—
Indicators
true
false
Compliance
CARB, EPA
CARB, EPA
Security
Not available—
Not available—
Spark arrestorYesYes
Neutral
Floating
true
UPC
11675308148
840321737618
Core / High-priority specs
Running Watts (Gasoline)
3700
6600
Starting Watts (Gasoline)
4500
8000
Runtime @ 50% Load (Gasoline)
Not available—
10.6
Runtime @ 25% Load (Gasoline)
16
Not available—
AC Outlet Types
2x Duplex 120V 20A (5-20R)1x 120V 30A (TT-30R)
3x Duplex 120V 20A (5-20R); 1x 120V 30A (L5-30R); 1x 120/240V 30A (L14-30R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
Briggs & Stratton OHV 4-stroke
OHV 4-stroke
Engine Displacement
224
389
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
16
Not available—
Runtime @ 50% Load (Gasoline)
Not available—
10.6
Controls & display
Display Type
Digital
Not available—
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, Remote
Not available—
Included Accessories
Oil, funnel, key fob, and battery
Funnel, Battery, and Wheel Kit
Warranty & identification
Commercial Warranty
3
Not available—
Part Number
30814
Not available—
Additional specs
Summary
The Briggs & Stratton 30814 P4500 PowerSmart is a 3700-watt inverter generator built for users who need reliable backup power without the noise of traditional models. At 60 decibels, it runs quiet enough for residential neighborhoods and campgrounds, making it suitable for homeowners managing outages, campers extending trips, and outdoor enthusiasts who cannot tolerate generator noise. The 4500-watt peak output handles startup surges for larger appliances like air conditioning units or power tools, while the 3700-watt running capacity sustains continuous operation. With a 3.5-gallon fuel tank and 16-hour runtime at 25% load, users can power essential devices through a full night or longer without refueling. The inverter technology produces only 3% THD, which means laptops, smartphones, and other sensitive electronics charge safely without risk of voltage spikes or damage.
The NorthStar c8000s is a commercial-grade portable generator designed for demanding job sites, featuring a Honda GX390 OHV engine and Quiet Armor Technology for reduced noise.
  • Most Powerful
    NorthStar c8000s
    6600W running
  • Quietest
    Briggs & Stratton 30814 P4500 PowerSmart
    60 dB
  • Longest Runtime
    NorthStar c8000s
    10.6h at 50% load
Where to buy
Prices can change. We update these automatically.
Briggs & Stratton 30814 P4500 PowerSmart
Store links
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NorthStar c8000s
Store links
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