Briggs & Stratton PowerProtect DX 20kW (040657) is a home standby generator from Briggs & Stratton, rated 20,000 running watts on propane and 20,000 W on natural gas, measured at 68 dBA, with 120/240V output.
General
Type
home-standby
Fuel
natural-gas, propane
Power output
Running watts (gas / LP for standby)
20000 W
Running watts (propane)
20000 W
Running watts (natural gas)
20000 W
Performance
Noise level
68 dBA
Electrical
Output voltage
120/240V
Automatic transfer switch included
No
Main-line circuit breaker
100 A
Features
Start type
automatic
Engine
Engine
Briggs & Stratton Vanguard
Engine displacement
993 cc
Physical
Weight
520 lb
Warranty
Warranty
10 yr
What the numbers mean
At 20,000 running watts
on its best fuel, this unit is sized for whole-house coverage on a typical 200 A home, subject to a load calculation by a licensed electrician.
Runs on natural gas, propane — expect lower output on propane (roughly
10%) and natural gas (roughly 20%) than on gasoline; the spec table shows the
published per-fuel ratings.
Permanently installed unit: sizing, gas-line capacity, placement clearances, and
the transfer switch are a job for licensed installers under local permits.
Compare the Briggs & Stratton PowerProtect DX 20kW (040657)
What can the Briggs & Stratton PowerProtect DX 20kW (040657) run during an outage?
With 20,000 running watts on its best fuel, the Briggs & Stratton PowerProtect DX 20kW (040657) is sized for whole-house coverage on a typical 200 A home, subject to a load calculation by a licensed electrician. Add up your actual loads with a sizing worksheet — the bands here are rough guidance, not a load calculation.
Does the Briggs & Stratton PowerProtect DX 20kW (040657) start automatically?
Yes — home standby generators monitor utility power and start themselves when it fails; pairing it with an appropriately sized automatic transfer switch (sold separately for some configurations) completes the automatic changeover.
