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Generac Home Standby-15 Generator Set

The Generac Home Standby-15 is a 15 kW (28 kVA) Natural Gas or L.P. Vapor standby generator set powered by a Mitsubishi 4G15 engine. It is available at 120/240 V, single-phase, 60 Hz and rated 62.5 A. It holds about 3.8 L (1.0 gal) of oil and 7.5 L (2.0 gal) of coolant. Starting uses 1 group-1 battery at 12 V.

15 kW
Standby
1.468 L
Displacement
3.8 L
Oil capacity
2
Document types

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Specifications

FuelNatural Gas or L.P. Vapor
Frequency60.0 Hz
Standby power15 kW
Standby kVA28
Prime power11 kW
ControllerSolid-state
Oil capacity3.8 L
AlternatorMMC 4G15 (2-pole, Class Class F insulation)
Voltage options120/240 V
Phase1
Rated current62.5 A
Power factor1.0
Circuit breaker100 A
Battery group1
Battery voltage12 V
Battery quantity1
Coolant capacity7.5 L

Engine

Mitsubishi 4G15
Oil capacity3.79 L
Coolant capacity7.57 L
Displacement1.468 L
Aspirationnaturally aspirated

Maintenance & consumables

for the Mitsubishi 4G15
ItemSpecCapacityPart #Interval
Air filterAir cleaner service—500 hr
Oil filterEngine oil filter—150 hr
Coolant50/50 low silicate ethylene glycol base antifreeze and soft water—
OilHigh quality detergent oil SC/SD/SE/SF rated—150 hr

Common questions

How many kW is the Generac Home Standby-15?

The Generac Home Standby-15 is rated 15 kW standby (28.0 kVA).

Which engine powers the Generac Home Standby-15?

The Generac Home Standby-15 is powered by the Mitsubishi 4G15 engine.

What kind of fuel does the Generac Home Standby-15 run on?

The Generac Home Standby-15 runs on Natural Gas or L.P. Vapor.

What is the oil capacity of the Generac Home Standby-15?

The Mitsubishi 4G15 engine in the Generac Home Standby-15 has an oil capacity of 3.79 liters.

What is the cooling system capacity of the Generac Home Standby-15?

The Generac Home Standby-15 cooling system holds 7.5 liters (2.0 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.

What is the continuous rating of the Generac Home Standby-15?

The Generac Home Standby-15 is rated 11 kW prime (28 kVA), against 15 kW standby.

What voltages is the Generac Home Standby-15 available in?

The Generac Home Standby-15 is offered in 120/240 V, 1-phase.

How many cold cranking amps does the Generac Home Standby-15 require?

The Generac Home Standby-15 uses 1 battery, 12 V each, group 1, per the manufacturer specification sheet.

What alternator does the Generac Home Standby-15 use?

The Generac Home Standby-15 uses a MMC 4G15 alternator. It has 2 poles. Insulation class Class F.

Fuel consumption

RatingLoadL/hgal/h
Prime100%204.085.0
Standby100%265.0110.0

Available documents

Reference — 0166590SBY (Generac)Parts manual — E21590SBY (Generac)

This page was generated from the 2 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.