Generac XG04045ANAC 45kW LC Single Phase Automatic Standby CARB Generator

Description

Generac XG04045ANAC 45kW LC Single Phase CARB Standby Generator Overview

The Generac XG04045ANAC is a 45kW LC single-phase automatic standby generator in the CARB version. It runs on natural gas or propane vapor, chosen at the controller, and it is EPA and SCAQMD exhaust emissions certified.

A Power Zone 410 controller, NFPA 110 capable, manages operation, and cellular connectivity supports Mobile Link and Fleet monitoring. The single-phase alternator puts out 120/240V and is paired with a 200 A circuit breaker. Mechanically, it uses an inline 4-cylinder, 4.5 L Generac engine with hydraulic lifters and no turbocharging, running at 1,800 RPM. Coolant is a 50/50 ethylene glycol blend, and an electronic governor works with electronic voltage regulation that holds output within 1 percent. The 12V system has a 5 A battery charger and a 37 A charging alternator; the battery itself, Group 27R at 725 CCA minimum, is not included. At full load the 45kW size is listed at 494 cubic feet per hour of natural gas, and output derates 1 percent for every 100 m above 183 m of altitude. The alternator is a synchronous design with sealed ball bearings, rotor insulation is class F and stator insulation is class H, and the carton includes the generator and an owner’s manual.

Key Features

• CARB version of the 45kW single-phase LC model
• Power Zone 410 controller, NFPA 110 capable
• Cellular connectivity for Mobile Link and Fleet
• Natural gas or propane vapor, selected by the controller
• Fuel-efficient operation with high motor starting and surge capacity
• Corrosion-resistant enclosure and frame
• Single-side regular maintenance access

Who It’s For

This CARB version is for owners who need 45kW of automatic standby power on single-phase service where that configuration is required. It carries a 5-year limited factory warranty.

Specifications

SKU	XG04045ANAC
Brand	Generac
Generator Output
Voltage	XG03245				XG04045
	Natural Gas				Liquid Propane
	Power (kW)		Current (A)		Power (kW)		Current (A)
120/240 1-Phase	32	133	32	133	40		40	139
208/120 3-Phase	32	111	32	111	40		40	120
240/120 3-Phase	32		32		40		40
480/277 3-Phase	32		32		40		40
Voltage Regulation
Type	Electronic
Sensing	All Phases
Regulation	+- 1 percent
Governor Specifications
Type	Electronic
Frequency Regulation	Isochronous
Steady State Regulation	+- 25 percent
Alternator System Specifications
	XG03245		XG04045
	1-Phase	3-Phase	1-Phase	3-Phase
Voltage Output	120/240 V Only	208/120 V; Configurable for 480/277 or 240/120 V with Optional Field-Installable VCC	120/240 V Only	208/120 V; Configurable for 480/277 or 240/120 V with Optional Field-Installable VCC
Circuit Breaker (CB) Size	150 A	Not Included; Optional Field-Installable Kit	200 A	Not Included; Optional Field-Installable Kit
Type	Synchronous		Synchronous
Rotor Insulation Class	F		F
Stator Insulation Class	H		H
Telephone Interference Factor (TIF)	< 50		< 50
Bearings	Sealed Ball		Sealed Ball
Coupling	Flexible Disc		Flexible Disc
Excitation System	Direct		Direct
Engine Specifications
	XG03245	XG04045
Make	Generac
Model	Inline 4 Cylinder
Cylinders	4
Displacement (L)	4.5
Bore	4.5 in
Stroke	4.25 in
Compression Ratio	9.9:1
Lifter Type	Hydraulic
Intake Air System	Naturally Aspirated
Temperature Derate	1.5% per every 5°C above 25°C (1.65% per every 10°F above 77°F)
Altitude Derate	1% per every 100 m above 183 m (3% per every 1000 ft above 600 ft)
Exercise Speed (RPM)	1,200
Operating Speed (RPM)	1,800
Cooling System
	XG03245	XG04045
Coolant	50/50 (50% Ethylene Glycol)
Coolant System Capacity (L (US gal))	11 (2.9)
Water Pump	Belt-Driven
Fan Type	Mechanical
Fan Quantity	1
Maximum Ambient Air Temperature (C (F))	50 (122)
Fuel Types
	XG03245	XG04045
Natural Gas	Yes
NG Pressure (kPa (in. WC))	0.87: 3.48 (3.5-14)
Liquid Propane	Yes
LP Vapor Pressue (kPa (in. WC))	1.74: 3.48 (7-14)
Fuel Type Configuration	Controller-Selected
Fuel Shutoff Solenoid	Standard, Dual
Fuel Consumption
Rated Load	XG03245				XG04045
	Natural Gas		Liquid Propane		Natural Gas		Liquid Propane
	(m3/h)	(CFH)	(m3/h)	(CFH)	(m3/h)	(CFH)	(m3/h)	(CFH)
25%	4.8	169	8.3	2.2	5.2	184	10	2.6
50%	6.8	240	12.9	3.4	8.2	289	14.5	3.8
75%	9.5	335	15.8	4.2	11.1	392	17.7	4.7
100%	11.5	406	18.5	4.9	14	494	21.7	5.7
Electrical System
System Voltage	12
Battery Charge Alternator (A)	37
Battery Charger (A)	5
Recommended Battery (not included)	Group 27R, 725 CCA Minimum
Maximum Allowable Battery	Group 31R

Frequently asked questions

What is the CARB version of the Generac XG04045ANAC?

The listing identifies the XG04045ANAC as the CARB version of its 45kW single-phase LC standby generator and says it is EPA and SCAQMD exhaust emissions certified. It does not spell out any other differences that come with the CARB designation.

What fuel does the XG04045ANAC run on?

It runs on natural gas or propane vapor, chosen at the controller. At full load it is listed at 494 cubic feet per hour of natural gas.

What is the output of the Generac XG04045ANAC?

The single-phase alternator puts out 120/240V and is paired with a 200 A circuit breaker. An electronic governor works with electronic voltage regulation that holds output within 1 percent.

What engine does the XG04045ANAC use?

An inline 4-cylinder, 4.5 L Generac engine with hydraulic lifters and no turbocharging, running at 1,800 RPM. Coolant is a 50/50 ethylene glycol blend, and the engine is naturally aspirated.

Is a battery included with the Generac XG04045ANAC?

No. The battery, Group 27R at 725 CCA minimum, is not included. The 12V system has a 5 A battery charger and a 37 A charging alternator.

Does the XG04045ANAC lose output at altitude?

Yes. Output derates 1 percent for every 100 m above 183 m of altitude. The Power Zone 410 controller is NFPA 110 capable, and cellular connectivity supports Mobile Link and Fleet monitoring.

Buying advice: read our guide to whole house generator cost, or compare all home standby generators.