Kohler 20 RZ Specs (Power | Consumption)

The Kohler 20 RZ generator is listed with standby output of 20 kW, Gasoline fuel, 60 Hz operation, 7 available voltage configurations, and Three phase.

Kohler Generator Specifications

Generator • Gasoline • 60 Hz • Three phase

Standby power: 20 kWVoltage options: 7 configurations

Key specifications

20 kW Standby power

Gasoline Fuel

7 configurations Voltage options

Three phase Phase

60 Hz Frequency

Useful generator charts

Charts are shown only when this model has enough usable source data.

Fuel consumption by load

How fuel use changes as generator load increases.

25% load

1.5 gal/hr

50% load

2.2 gal/hr

75% load

2.7 gal/hr

100% load

3 gal/hr

Power output

Low 18 kW High 20 kW

Standby

20 kW

Prime

18 kW

How the Kohler 20 RZ compares

This compares the supplied numeric specification with Kohler generators in the same broad standby-power class where enough comparable data exists.

Standby power

20 kW

4% below avg

49th percentile

Oil capacity

1.24 gal

31% below avg

29th percentile

Standby power20 kW

Low 15 kWAverage 20.7 kWHigh 28.1 kW

About 4% below the similar-output Kohler average. Around the 49th percentile for this field.

Oil capacity1.24 gal

Low 0.5 galAverage 1.8 galHigh 2.92 gal

About 31% below the similar-output Kohler average. Around the 29th percentile for this field.

This model Peer average

Generator information

Manufacturer	Kohler
Model	20 RZ
Generator type	Generator
Fuel	Gasoline
Frequency	60 Hz

Electrical output

Standby power	20 kW
Prime power	18 kW
Standby kVA	25.0
Voltage options	120/240 V, 139/240 V, 127/220 V, 277/480 V, 220/380 V, 120/208 V, 347/600 V
Phase	Three phase
Power factor	0.8

Engine, cooling and controls

Engine model	Ford LRG 425
Engine displacement	153 cu in (2.5 L)
Aspiration / cooling	Natural
Rated engine speed	1500 rpm
Engine oil capacity	1.24 gal (4.7 L)
Engine coolant capacity	3.99 gal (15.1 L)
Oil capacity	1.24 gal (4.7 L)
Coolant capacity	3.99 gal (15.1 L)
Maximum ambient	122 °F (50 °C)
Controller	Decision-Maker 3+
Alternator	Kohler 4P4

Physical specifications

Dimensions (L × W × H)	75 × 29 × 42.7 in (1905 × 737 × 1085 mm)

Battery

Battery cranking	630 CCA
Battery voltage	12 V
Battery quantity	1

Fuel consumption

Standby	25%; 50%; 75%; 100%
Prime	1.5 gal/h (5.7 L/h) @ 25%; 2.2 gal/h (8.3 L/h) @ 50%; 2.7 gal/h (10.2 L/h) @ 75%; 3.0 gal/h (11.4 L/h) @ 100%

Maintenance and service parts

Fuel filter	Part number: — \| 254471; Specification: Secondary
Air filter	Part number: 9131141

Disclaimer: Specifications should be verified against the official owner’s or service manual and confirmed on the Kohler North America generator website.