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Generac MGG280 Generator Set

The Generac MGG280 is a 162 kW (295 kVA) Natural Gas, LP or Wellhead Gas standby generator set. It is available at 277/480 V, 3-phase, 60 Hz and rated 354 A. It holds about 10.1 L (2.7 gal) of oil, with a maximum ambient rating of 125 °C. Starting uses 2 group-8 batteries rated 900 CCA at 24 V. The set weighs about 4950 kg (10913 lb) and produces 78 dBA at 23 m.

162 kW
Standby
10.1 L
Oil capacity
4
Document types

How to read your Generac serial & model number →

Specifications

FuelNatural Gas, LP or Wellhead Gas
Frequency60.0 Hz
Standby power162 kW
ControllerInteliGen NTTMdigital, Inteligen
Oil capacity10.1 L
AlternatorHci444C-311 277/480V 12 lead PMG Alternator
Voltage options277/480 V
Phase3 phase
Rated current354 A
Power factor0.8
Circuit breaker16 A
Battery group['8D']
Battery cranking900 CCA
Battery voltage24 V
Battery quantity2
Max ambient125 °C
Dry weight4950 kg
Sound level78.0 dBA @ 23 m

Filters & service parts

model family
ItemSpecCapacityPart #Interval
Air filter— find
Fuel filter— find
Oil filter—750 hr find
Belt— find
CoolantCoolant should be checked daily. Coolant should be visible in the sight glass located near the top of the radiator.—
Coolant filter— find
Oil—50 hr

Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number.

Common questions

What is the power rating of the Generac MGG280?

The Generac MGG280 is rated 162 kW standby.

What fuel does the Generac MGG280 use?

The Generac MGG280 runs on Natural Gas, LP or Wellhead Gas.

What alternator does the Generac MGG280 use?

The Generac MGG280 uses a Hci444C-311 277/480V 12 lead PMG Alternator alternator.

Parts

48
Part #DescriptionQtySystem
12142DECAL, GROUND1Service part / kit PartsGeek
34784DECAL, GASEOUS GENERATOR2Service part / kit PartsGeek
36003WEATHERSTRIP, .83 X .761Service part / kit PartsGeek kuduparts $205.00
37600DECAL, MAINTENANCE1Service part / kit PartsGeek
38450DECAL SET, SAFETY1Service part / kit PartsGeek
38846WEATHERSTRIP, CABLE ENTRY - EPDM1Service part / kit PartsGeek
50781PLUG, ROOF HOLE 6.00 DIA1Service part / kit PartsGeek
EH0440A04W6BFRAME, ENCLOSURE DOOR1Service part / kit PartsGeek
EN1000A60W6BPANEL, SOLID 21.0 X 72.01Service part / kit PartsGeek
EN2000A04W6BPANEL, RISER W/CABLE ACCESS1Service part / kit PartsGeek
EN2001A136W6BPANEL, UPPER PANEL1Service part / kit PartsGeek
EN3003A134W6BDOOR, VENTED - INTERNAL DUCT, LEFT1Service part / kit PartsGeek
EN3003A135HANDLE, RECESS LOCK, SS1Service part / kit PartsGeek
EN3003A24TRIM, WINDOW, L-SHAPED2Service part / kit PartsGeek
EN3003A28W6BFRAME, CONTROL/POWER PANEL DOOR2Service part / kit PartsGeek
EN3003A53W6BFRAME, LEFT AND RIGHT DOOR5Service part / kit PartsGeek
EN3021A01W6BDOOR, OUTER SOLID 36.0 X 421Service part / kit PartsGeek
EN3021A03W6BDOOR, OUTER1Service part / kit PartsGeek
EN3021A04W6BDOOR, OUTER SOLID 30.0 X 48.01Service part / kit PartsGeek
EN3021A05W6BDOOR, OUTER SOLID 36.0 X 48.0 - RIGHT1Service part / kit PartsGeek
EN3023A01DOOR, INNER SOLID 36.0 X 42.01Service part / kit PartsGeek
EN3023A04DOOR, INNER SOLID 30.0 X 48.01Service part / kit PartsGeek
EN3023A05DOOR, INNER SOLID 30.0 X 48.01Service part / kit PartsGeek
EN3023A06DOOR, INNER1Service part / kit PartsGeek
EN4004A16W6BPANEL, ROOF END 52.50 X 72.001Service part / kit PartsGeek
EN4004A17W6BPANEL. ROOF 49.50 X 72.001Service part / kit PartsGeek
EN4004A18W6BPANEL, ROOF END DIS 59.50 X 72.001Service part / kit PartsGeek
EN4004A19W6BPANEL, ROOF END W/ RAD ACCESS 36.50 X 72.001Service part / kit PartsGeek
EN7020A151W6BPANEL, RADIATOR - RIGHT1Service part / kit PartsGeek
EN7020A152W6BPANEL, RADIATOR - LEFT1Service part / kit PartsGeek
EN7020A153W6BPANEL, RADIATOR TOP - W/EXHAUST1Service part / kit PartsGeek
EN8000A08MOUNTING STRIP, WEATHERSTRIP1Service part / kit PartsGeek
EN8003A32L2BDUCT, DOOR INTAKE1Service part / kit PartsGeek
EN8003A37L2BDUCT, UPPER PANEL INTAKE1Service part / kit PartsGeek
EN8035G04GUARD, FINGER - GLASTIC1Service part / kit PartsGeek
EN8507G26PANEL, DIS - LOWER2Service part / kit PartsGeek
EN8550A49PANEL, PERF 18.0 X 72.01Service part / kit PartsGeek
HB2402A29HANDLE, RECESS LOCK, SS1Service part / kit PartsGeek
HB6058A15L2BSTRIKER, DOOR LATCH8Service part / kit PartsGeek
HB6058A16GUARD, PAD LATCH1Service part / kit PartsGeek
HW2409A20HINGE, DOOR, SS2Service part / kit PartsGeek
HW2409A29HINGE, DOOR - WELDNUT, SS2Service part / kit PartsGeek
HW7101A12RIVET, .188 X .250 TO .500 GRIP4Service part / kit PartsGeek
MK1010A13WEATHERSTRIP, .830 X .7601Service part / kit PartsGeek
MK1011A107FOAM, POLYDAMP1Service part / kit PartsGeek
MK1020A00INSULATION, ACOUSTIC1Service part / kit PartsGeek
MK1021A00BARRIER, BARIUM-SULFATE, 1 LB1Service part / kit PartsGeek
RM1093A03HINGE, DOOR - WELDNUT, SS2Service part / kit PartsGeek

Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.

Fuel consumption

RatingLoadL/hgal/h
Prime
Prime50%51.8
Prime75%73.8
Prime100%
Standby100%

Available documents

Brochure — application-profile-mobile-there-s-power-in-numbers-low-res (Generac)Spec sheet — FICHA-INDUSTRIAL-PESADO-min (Generac)Spec sheet — Generac MGG280N2 SPEC-2-12-19 (Generac)Spec sheet — mgg280n2 mobile-gaseous-generator spec-sheet (Generac)Operator's manual — 35320 (Generac)Operator's manual — mgg280-mgg350 mobile-gaseous-generator owners-manual (Generac)Parts manual — A0000071709 (Generac)