HomeGeneracGenerac Home Standby-15

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 Generac MMC 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
1.5 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

Generac MMC 4G15
Oil capacity3.8 L
Coolant capacity0.9 L
Displacement1.5 L
AspirationNaturally Aspirated
Rated speed3600 rpm

Maintenance & consumables

for the Generac MMC 4G15
ItemSpecCapacityPart #Interval
Air filterN.G./L.P.100 hr
Fuel filterN.G./L.P.100 hr
Oil filterN.G./L.P.100 hr
BatteryN.G./L.P.100 hr
BeltN.G./L.P.100 hr
CoolantCooling system with coolant capacity of 2 US gallons, radiator capacity of 1.75 US gallons, and coolant flow rate of 10.6 US gallons per minute
OilGear type oil pump, full flow, cartridge oil filter3.8 L
Spark plugN.G./L.P.1000 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 Generac MMC 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 Generac MMC 4G15 engine in the Generac Home Standby-15 has an oil capacity of 3.8 liters.

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)