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SPECIFICATIONS
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GENERATOR
Models 04389, 04758 Models 04456, 04759 Model 04390, 04760
Rated Max. Continuous Power Capacity (Watts*) 6,000 NG/7,000 LP 12,000 NG/12,000 LP 13,000 NG/15,000 LP
Rated Voltage 120/240 120/240 120/240
Rated Max. Continuous Load Current (Amps)
120 Volts** 50.0 NG/58.3 LP 100.0 NG/100.0 LP 108.3 NG/125.0 LP
240 Volts 25.0 NG/29.2 LP 50.0 NG/50.0 LP 54.2 NG/62.5 LP
Main Line Circuit Breaker 30 Amp 50 Amp 60 Amp/70 Amp
Phase 1 1 1
Number of Rotor Poles 2 2 2
Rated AC Frequency 60 Hz 60 Hz 60 Hz
Power Factor 1 1 1
Battery Requirement Group 26/26R Group 26/26R Group 26/26R
12 Volts and 12 Volts and 12 Volts and
350 Cold-cranking 550 Cold-cranking 550 Cold-cranking
Amperes Minimum Amperes Minimum Amperes Minimum
Weight 452 Pounds 470 Pounds 487 Pounds
Output Sound Level @ 23 ft (7m) at full load 68 db (A) 70.5db (A) 71.5 db (A)
Normal Operating Range -20 F (-28.8 C) to 104 F (40 C)
* Maximum wattage and current are subject to and limited by such factors as fuel Btu content, ambient temperature, altitude, engine power and condition, etc. Maximum power
decreases about 3.5 percent for each 1,000 feet above sea level; and also will decrease about 1 percent for each 6 C (10 F) above 16 C (60 F) ambient temperature.
** Load current values shown for 120 volts are maximum TOTAL values for two separate circuits. The maximum current in each circuit must not exceed the value stated for 240 volts.
15,000 watt with upgrade kit 04578-0. Kit includes power harnesses and 70 amp 2-pole circuit breaker.
ENGINE
Models 04389, 04758 Models 04456, 04759 Models 04390, 04760
Type of Engine GH-410 GT-990 GT-990
Number of Cylinders 1 2 2
Rated Horsepower 14.5 @ 3,600 rpm 26 @ 3,600 rpm 30 @ 3,600 rpm
Displacement 410cc 992cc 992cc
Cylinder Block Aluminum w/Cast Aluminum w/Cast Aluminum w/Cast
Iron Sleeve Iron Sleeve Iron Sleeve
Valve Arrangement Overhead Valves Overhead Valves Overhead Valves
Ignition System Solid-state w/Magneto Solid-state w/Magneto Solid-state w/Magneto
Recommended Spark Plug RC12YC RC12YC RC12YC
Spark Plug Gap 0.76 mm (0.030 inch) 0.5 mm (0.020 inch) 0.5 mm (0.020 inch)
Compression Ratio 8.6:1 9.5:1 9.5:1
Starter 12 Vdc 12 Vdc 12Vdc
Oil Capacity Including Filter Approx. 1.5 Qts Approx. 1.7 Qts Approx. 1.7 Qts
Recommended Oil Filter Generac Part # 070185 Generac Part # 070185 Generac Part # 070185
Recommended Air Filter Generac Part # 0C8127 Generac Part # 0C8127 Generac Part # 0C8127
Operating RPM 3,600 3,600 3,600
FUEL
CONSUMPTION
Model # Natural Gas* LP Vapor**
1/2 Load Full Load 1/2 Load Full Load
04389, 04758 74 105 0.91/33 1.21/44.1
04556, 04759 114 185 1.34/48.9 2.17/79.0
04390, 04760 148.5 240 1.73/63.2 2.80/102.3
* Natural gass is in cubic feet per hour. **LP is in gallons per hour/cubic feet per hour.
STATOR
WINDING
RESISTANCE
VALUES
/
ROTOR
RESISTANCE
Model 04692 Models 04389 Models 04456 Models 04390
04679, 04758 04759 04760
Power Winding: Across 11 & 22 0.190-0.208 ohms 0.223-0.259 ohms 0.115 ohms 0.08/0.08 ohms
Power Winding: Across 33 & 44 0.190-0.208 ohms 0.223-0.259 ohms 0.115 ohms 0.08/0.08 ohms
Excitation Winding: Across 2 & 6 1.442-1.670 ohms 1.53-1.77 ohms 0.745 ohms 0.705 ohms
Engine Run Winding: Across 55 & 66A 0.104-0.120 ohms 0.100-0.169 ohms 0.109 ohms 0.087 ohms
Battery Charge Winding: Across 66 & 77 0.137-0.158 ohms 0.146-0.169 ohms 0.164 ohms 0.130 ohms
Rotor Resistance 15.42-17-85 ohms 11.88-13.76 ohms 15.9 ohms 19.8 ohms