Briggs and Stratton 40346 20 kW, 120/240V Single-Phase Steel Standby Generator with 200A Automatic Transfer Switch with Service Disconnect

- Item #: BCI2130267

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Liquid Propane / Natural Gas
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  • Briggs & Stratton Sandby Generators
    Learn about the Briggs & Stratton Standby Generators and how the system works.
  • Why Buy A Home Standby Generator
    We are all aware of storms that can knock down powers to millions, or record snow falls that bring down trees and power lines. Not matter where we live the electrical grid effects everybody. Most of the grid was built 50 years ago and only had a 40 year life expectancy. Make sure your not left in the dark with a backup standby generator.

20 kW 120/240V Single-Phase Steel Standby Generator with 200A Automatic Transfer Switch with Service Disconnect

Product Features:

  • 20kW of power will ensure your home will retain power through unexpected outages
  • Connects to existing liquid propane or natural gas fuel supply for easy and efficient power
  • 4 Year Residential Warranty
  • Enclosure made from galvanneal steel is sturdy and offers superior corrosion resistance
  • Weather resistant automotive rust proofing paint finish
  • Managed Whole House Power system powers your household appliances plus up to 2 air conditioners
  • UL Listed to UL2200 Engine / Generator Standard for Safety
  • Automatic Transfer Switch Included: ACCM-II Power Control Module TS (2 x 5-Ton AC) has computer controlled load management power switching to expand your generator's range by prioritizing powered circuits
  • The Self-Test Mode periodically runs a self test to ensure that your generator will be ready to work when you need it


  • Briggs and Stratton Vanguard OHV Engine: This V-twin, overhead valve commercial grade engine has been application engineered for power generation
  • Engine Displacement: 993cc
  • Engine RPM: 3600 (Revolutions per Minute)
  • Air Cooled
  • Covered Under 4 Year Residential Warranty
  • Includes Low Oil Alert and Automatic Shutdown

Product Technologies / Benefits:

  • Fully Automatic Standby: Advanced electronics detect when an utility power outage occurs and automatically starts the generator
  • Durable Enclosure: Rust-resistant, Galvanneal steel enclosures are made from the same materials and paint process used in the automotive industry, resulting in years of protection against chips and abrasions
  • Front Air Ventilation: Featuring unique airflow technology, the standby generator’s design pushes engine exhaust out the front of the unit and directly away from the house
  • More Access to Air Conditioners: Briggs & Stratton automatic transfer switches can manage the loads of up to two 5-ton air conditioners while powering other household appliances
  • Low Natural Gas Pressure Requirements: This standby generator can operate at 3.5" to 7" water column

Product Specifications:

  • Overall Height: 31”
  • Overall Length: 48”
  • Overall Width: 34”
  • Product Weight: 484 lbs
  • NG Power Capacity: 18.4kW
  • LP Power Capacity: 20kW
  • NG Consumption (50% Load): 187 Cu.Ft. per hour
  • LP Consumption (50% Load): 2.3 Gallons per hour

Additional Briggs and Stratton Links

Our SKU: Briggs and Stratton 40346

This product is listed under the following manufacturer number(s):

*Denotes a finish or option that has been discontinued

Briggs and Stratton 40346 Product Specifications

Owner's Manual
Installation Sheet
Specification Sheet
Battery Info
AC Ton Rating 2 x 5-Tons
ATS Load Shedding Yes
ATS Poles 2
ATS Service Disconnect Yes
Alternator Type Brush
Amperage 83
Auto Shut Off Yes
Auto Voltage Regulation Yes
Battery Included No
Battery Type 550 CCA
CARB approved No
CC 993
Cast Iron Sleeve Yes
Control Type Digital
Cooling System Air Cooled
Electric Start Yes
Enclosure Material Galvanneal Steel
Engine Brand Briggs and Stratton Vanguard, Briggs & Stratton
Engine Size 993
Engine Type V-Twin
Frequency 60
Fuel Type Liquid Propane, Natural Gas
Generator Style Standby
Grade Emergency
Height 31
Hour Meter Included Yes
LP Consumption 2.31
LP Power Capacity 20000
Length 48
Lifting Eye No
Low Oil Alert Yes
Made in America Yes
Manufacturer Warranty 4 Year, 4 Year Residential, 4 Year Residential (Engine)
Motor RPM 3600
Mounting Pad Included Yes
Mounting Pad Material Composite
NG Power Capacity 18000
Natural Gas Consumption 187
Number of Cylinders 2
Outdoor Sound Level (dba) 68.4
Phase 1
Product Weight 484
RPM (High) 3600
Rated Amps 83 Amps @ 240 Volts (Single Phase)
Run Watts 20000
Starting System Electric
Transfer Switch Included Yes
Transfer Switch Style Service Disconnect
UL Listed Yes
Voltage 120, 240
Voltage Meter No
Wattage 20000
Width 34

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