Generac XG04045ANAX 45kW LC Single Phase Automatic Standby Generator

Description

Generac XG04045ANAX 45kW LC Single Phase Standby Generator Overview

The Generac XG04045ANAX is a 45kW LC automatic standby generator with single-phase output. It can burn natural gas or propane vapor, selected through the controller, and its exhaust emissions are EPA and SCAQMD certified.

A Power Zone 410 controller, NFPA 110 capable, handles control duties, and cellular connectivity supports Mobile Link and Fleet. The alternator delivers 120/240V, and a 200 A circuit breaker is part of the single-phase configuration. The engine is an inline 4-cylinder Generac design displacing 4.5 L, with hydraulic lifters, natural aspiration and a 1,800 RPM operating speed. It is liquid cooled with a 50/50 ethylene glycol mix, and voltage is regulated electronically to within 1 percent. The electrical system is 12V with a 5 A charger and a 37 A charging alternator, and a Group 27R battery with at least 725 CCA is recommended but not included. Full-load natural gas consumption is listed at 494 cubic feet per hour for the 45kW size, and the rated ambient limit is 50 degrees C (122 degrees F). 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

• Single-phase 120/240V output at 45kW
• Power Zone 410 controller, NFPA 110 capable
• Cellular connectivity for Mobile Link and Fleet
• Controller-selectable natural gas or propane vapor
• Fuel efficiency, high motor starting and surge capacity
• Quiet operation in a corrosion-resistant enclosure and frame
• Placement as close as 18 inches (457 mm) from a structure

Who It’s For

This model is for larger homes, commercial properties and other sites that want 45kW of automatic standby power on a single-phase supply. A 5-year limited factory warranty comes with it.

Specifications

SKU	XG04045ANAX
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 fuel does the Generac XG04045ANAX use?

It can burn natural gas or propane vapor, selected through the controller, and its exhaust emissions are EPA and SCAQMD certified. Full-load natural gas consumption is listed at 494 cubic feet per hour.

What controller does the XG04045ANAX have?

A Power Zone 410 controller, NFPA 110 capable, handles control duties, including fuel selection, and cellular connectivity supports Mobile Link and Fleet monitoring of the generator.

What is the electrical output of the Generac XG04045ANAX?

The alternator delivers single-phase 120/240V, and a 200 A circuit breaker is part of the single-phase configuration. Voltage is regulated electronically to within 1 percent.

What engine is in the XG04045ANAX?

An inline 4-cylinder Generac design displacing 4.5 L, with hydraulic lifters, natural aspiration and a 1,800 RPM operating speed. It is liquid cooled with a 50/50 ethylene glycol mix.

Does the Generac XG04045ANAX come with a battery?

No. A Group 27R battery with at least 725 CCA is recommended but not included. The 12V electrical system has a 5 A charger and a 37 A charging alternator.

How close to a structure can the XG04045ANAX be placed?

As close as 18 inches (457 mm) from a structure. The rated ambient limit is 50 degrees C (122 degrees F), and the enclosure and frame are corrosion resistant.

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