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SINGLE PHASE LOAD
Always be sure to check the nameplate on the generator and equipment to insure the wattage, amperage, frequency, and voltage requirements are satisfactorily supplied by the generator for operating the equipment.
Generally, the wattage listed on the nameplate of the equipment is its rated output. Equipment may require
130—150% more wattage than the rating on the nameplate, as the wattage is infl uenced by the effi ciency, power factor and starting system of the equipment.
NOTICE
If wattage is not given on the equipment’s name plate, approximate wattage may be determined by multiplying nameplate voltage by the nameplate amperage.
WATTS = VOLTAGE x AMPERAGE
The power factor of this generator is 0.8. See Table 5 below when connecting loads.
Table 5. Power Factor By Load
Type of Load Power Factor
Single-phase induction motors
Electric heaters, incandescent lamps
Fluorescent lamps, mercury lamps
Electronic devices, communication equipment
Common power tools
0.4-0.75
1.0
0.4-0.9
1.0
0.8
Table 6. Cable Selection (60 Hz, Single Phase Operation)
2.5
5
7.5
10
15
20
Current in
Amperes
Load in Watts
At 100
Volts
At 200
Volts
300
600
600
1200
Maximum Allowable Cable Length
#10 Wire
1000 ft.
500 ft.
#12 Wire
600 ft.
300 ft.
#14 Wire
375 ft.
200 ft.
900
1200
1800
1800
2400
3600
350 ft.
250 ft.
150 ft.
200 ft.
150 ft.
100 ft.
125 ft.
100 ft.
65 ft.
2400 4800 125 ft.
75 ft.
50 ft.
CAUTION: Equipment damage can result from low voltage
#16 Wire
250 ft.
125 ft.
100 ft.
LOAD APPLICATION
THREE PHASE LOAD
When calculating the power requirements for 3-phase power use the following equation:
NOTICE
If 3Ø load (kVA) is not given on the equipment nameplate, approximate 3Ø load may be determined by multiplying voltage by amperage by 1.732.
NOTICE
Motors and motor-driven equipment draw much greater current for starting than during operation.
An inadequate size connecting cable which cannot carry the required load can cause a voltage drop which can burn out the appliance or tool and overheat the cable. See
Table 6.
When connecting a resistance load such as an incandescent lamp or electric heater, a capacity of up to the generating set’s rated output (kW) can be used.
When connecting a fl uorescent or mercury lamp, a capacity of up to the generating set’s rated output (kW) multiplied by 0.6 can be used.
When connecting an electric drill or other power tools, pay close attention to the required starting current capacity.
When connecting ordinary power tools, a capacity of up to the generating set’s rated output (kW) multiplied by 0.8 can be used.
DANGER
Before connecting this generator to any building’s electrical system, a licensed electrician must install an isolation (transfer) switch. Serious damage to the building’s electrical system may occur without this transfer switch.
DCA400SSI GENERATOR • OPERATION AND PARTS MANUAL — REV. #2 (11/03/08) — PAGE 25
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