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Caterpillar XQ20 Specs (Power | Consumption)

Written by Ernie Lo in Specs Last Updated August 18, 2026

The Caterpillar XQ20 generator is listed with standby output of 20 kW, diesel fuel, 60 Hz operation, 3 available voltage configurations, Three phase, and sound level of 65 dBA @ 23 ft (7 m).

Caterpillar Generator Specifications

Generator • diesel • 60 Hz • Three phase

Standby power: 20 kWVoltage options: 3 configurationsDry weight: 2,030 lb (921 kg)

Key specifications

20 kW Standby power
diesel Fuel
3 configurations Voltage options
Three phase Phase
2,030 lb (921 kg) Dry weight
65 dBA @ 23 ft (7 m) Sound level
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.
50% load

1 gal/hr

75% load

1.3 gal/hr

100% load

2.9 gal/hr

Estimated runtime by load
Calculated from the listed 46.8 gal fuel capacity and fuel-consumption data.
50% load

46.8 hr

75% load

36 hr

100% load

16.1 hr

Power-to-weight
Standby output per 1,000 lb of dry weight compared with a fixed industry reference for this output class.
This model

9.8 kW

Typical reference

33 kW

Low for this output class
Power output
Low 18 kW High 20 kW
Standby

20 kW

Prime

18 kW

How the Caterpillar XQ20 compares

Low, Typical and High are fixed generator-industry reference bands set by standby-output class. They do not change based on the models contained in this CSV.

Standby power
20 kW
Typical range
Typical: 22.5 kW
Dry weight
2,030 lb
High range
Typical: 992 lb
Sound level
65 dBA
Typical range
Typical: 69 dBA
Oil capacity
1.59 gal
Typical range
Typical: 1.85 gal
Standby power20 kW · Typical
Low 15 kWTypical 22.5 kWHigh 30 kW

Falls within the typical industry reference range for generators in this standby-output class.

Dry weight2,030 lb · High
Low 496 lbTypical 992 lbHigh 1,808 lb

Falls toward the high end of the fixed industry reference range for generators in this standby-output class.

Sound level65 dBA · Typical
Low 58 dBATypical 69 dBAHigh 80 dBA

Falls within the typical industry reference range for generators in this standby-output class.

Oil capacity1.59 gal · Typical
Low 0.79 galTypical 1.85 galHigh 3.7 gal

Falls within the typical industry reference range for generators in this standby-output class.

This model Typical industry reference

Generator information

Manufacturer Caterpillar
Model XQ20
Generator type Generator
Fuel diesel
Frequency 60 Hz

Electrical output

Standby power 20 kW
Prime power 18 kW
Standby kVA 25.0
Voltage options 480/277 V, 208/120 V, 240/120 V
Phase Three phase
Power factor 0.8
Circuit breaker 100 A

Engine, cooling and controls

Engine model Perkins 404C-22
Engine displacement 134 cu in (2.2 L)
Aspiration / cooling Natural
Rated engine speed 3000 rpm
Engine oil capacity 2.8 gal (10.6 L)
Engine coolant capacity 1.84 gal (7 L)
Oil capacity 1.59 gal (6 L)
Coolant capacity 1.84 gal (7 L)
Controller Manual/Autostart control panel
Emissions Tier 4 EPA

Physical specifications

Dry weight 2, 030 lb (921 kg)
Dimensions (L × W × H) 78 × 32.3 × 53.6 in (1980 × 820 × 1362 mm)
Sound level 65 dBA @ 23 ft (7 m)

Battery

Battery voltage 12 V

Fuel system and runtime

Fuel tank 46.8 gal (177 L)
Tank runtime 26 hr

Fuel consumption

Standby 1.0 gal/h (3.6 L/h) @ 50%; 1.3 gal/h (4.9 L/h) @ 75%; 2.9 gal/h (5.8 L/h) @ 100%
Prime 0.9 gal/h (2.3 L/h) @ 50%; 1.2 gal/h (4.5 L/h) @ 75%; 4.0 gal/h (5.2 L/h) @ 100%

Maintenance and service parts

Engine oil Interval: 500 hr; Capacity: 1.6
Oil filter Interval: 500 hr

Disclaimer: Specifications should be verified against the official owner’s or service manual and confirmed on the Caterpillar USA website.

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Ernie Lo

Ernie Lo is a qualified web designer and web developer. He works as an IT support technician and website manager at Benleigh Vending, and he also fixes vending machines.

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