Cummins QuietConnect RS30 30kW Liquid-Cooled is a home standby generator from Cummins, rated 30,000 running watts on propane and 30,000 W on natural gas, measured at 60 dBA, with 120/240V output.
General
Type
home-standby
Fuel
natural-gas, propane
Power output
Running watts (gas / LP for standby)
30000 W
Running watts (propane)
30000 W
Running watts (natural gas)
30000 W
Performance
Noise level
60 dBA
NG use at half load
219 ft³/h
Propane use at half load
2.7 gal/h
Electrical
Output voltage
120/240V
Automatic transfer switch included
No
Main-line circuit breaker
150 A
Features
Start type
automatic
Engine
Engine displacement
2400 cc
Physical
Weight
1231 lb
Warranty
Warranty
2 yr
What the numbers mean
At 30,000 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.
Estimated fuel cost for 24 h at ~50% load: about $79 on natural gas at
national average prices (assumptions).
Permanently installed unit: sizing, gas-line capacity, placement clearances, and
the transfer switch are a job for licensed installers under local permits.
Compare the Cummins QuietConnect RS30 30kW Liquid-Cooled
What can the Cummins QuietConnect RS30 30kW Liquid-Cooled run during an outage?
With 30,000 running watts on its best fuel, the Cummins QuietConnect RS30 30kW Liquid-Cooled 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.
What does the Cummins QuietConnect RS30 30kW Liquid-Cooled cost to run for a day?
Roughly $79 for 24 hours of continuous operation at about 50% load on natural gas, at national average fuel prices. The assumptions behind this estimate are documented on the methodology page; your fuel price and load change the figure.
Does the Cummins QuietConnect RS30 30kW Liquid-Cooled 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.
