15,000 and 17,500 Watt Portable Generators

GUARDIAN’s Ultra Source® portable generators are the most powerful portable generators on the market and offer the best value in the business. They supplement our complete line of residential and commercial automatic standby generators and are ideal for power on the job site or as an emergency source of electricity at home or in commercial applications such as gas stations.

Impressive Power
Our 15,000-watt and 17,500-watt models feature our own OHVI® 992cc industrial grade engine. This powerhouse is renowned for its reliability, long life, impressive power and smooth, quiet operation.

Manual Transfer Switch
Paired with our indoor rated manual transfer switch, the new 17,500-watt unit makes it easy to use a portable generator during an outage. With up to 16 pre-wired circuits, all that’s required is to start the generator and plug it in. By flipping a switch, the utility is locked out and the load is transferred to the generator.

• Breakthrough Design: 15 kW can start a 4-ton A/C unit and the 17.5 kW can start a 5-ton A/C unit
• Circuit Coverage: Protects up to 16 circuits (17.5 kW model)
• Automatic Voltage Regulator: Quality electrical output for sensitive electronics
• Electronic Governor: Fast response to changing electrical loads
• Generac OHVI® V-Twin Industrial Engine: The ONLY air-cooled engine designed specifically for generators
• Longest Life Expectancy in the Industry: Over 3,000 hours of run time
• Full Pressure Lubrication: Continuous lubrication of all vital engine parts for from moment of start up for ultimate engine protection
• Spin-on Oil Filter: Automotive style for easy maintenance and prolonged engine life
• 16 Gallon Fuel Tank
• Automatic Idle Control
• Electric Start – Quick start
• 50-amp High Power Outlet, Twistlock Plug, plus GFCI Protected Duplex Outlets
• 10-Hour Run-time at ½ Load
• Wheel Kit and Heavy Duty Lifting Eye
• 13” All-Terrain Tires

Generator Set Model Number 04582 04583* Rated Watts 15000 17500 Surge Watts 22500 26250 Voltage (Vac) 120/240 120/240 Output (A) 125/62.5 145.8/72.9 Engine Type Generac OHVI Generac OHVI Engine Displacement 992cc 992cc Engine Starting Electric Electric Fuel Capacity (gal.) 16 16 Outlets 2 x 120V 20A GFCI 2 x 120V 20A 2 x 120V 30A Twistlock 1 x 120/240V 30A Twistlock 1 x 240V 50A 1 x 12Vdc 10A 2 x 120V 20A GFCI 2 x 120V 20A 2 x 120V 30A Twistlock 1 x 120/240V 30A Twistlock 1 x 240V 50A 1 x 12Vdc 10A Weight 450 525 Dimensions (H" x W" x L") 38.5 x 30.75 x 48.5 38.5 x 30.75 x 48.5 * Includes indoor rated, pre-wired manual transfer switch