DCA400SSI4F/DCA400SSI4F3 60 HZ GENERATOR • OPERATION MANUAL — REV. #3 (04/18/22) — PAGE 33
LOAD APPLICATION
SINGLE-PHASE LOAD
Always be sure to check the nameplate on the generator
and equipment to ensure 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 influenced by the efficiency, power factor
and starting system of the equipment.
WATTS = VOLTAGE × AMPERAGE
The power factor of this generator is 0.8. See Table 6 below
when connecting loads.
NOTICE
If wattage is not given on the equipment’s nameplate,
approximate wattage may be determined by multiplying
the nameplate voltage by the nameplate amperage.
Table 6. Power Factor By Load
Type of Load
Power Factor
Single-phase induction motors
0.4–0.75
Electric heaters, incandescent lamps
1.0
Fluorescent lamps, mercury lamps
0.4–0.9
Electronic devices,
communication equipment
1.0
Common power tools
0.8
Table 7. Cable Selection (60 Hz, Single-Phase Operation)
Current
in
Amperes
Load in Watts
Maximum Allowable Cable Length
At 100
Volts
At 200
Volts
#10 Wire #12 Wire #14 Wire #16 Wire
2.5
300
600
1,000 ft.
600 ft.
375 ft.
250 ft.
5
600
1,200
500 ft.
300 ft.
200 ft.
125 ft.
7.5
900
1,800
350 ft.
200 ft.
125 ft.
100 ft.
10
1,200
2,400
250 ft.
150 ft.
100 ft.
15
1,800
3,600
150 ft.
100 ft.
65 ft.
20
2,400
4,800
125 ft.
75 ft.
50 ft.
CAUTION: Equipment damage can result from low voltage.
NOTICE
Cable selection table is a general guideline.
ALWAYS
consult local and national electrical codes when sizing
cables.
THREE-PHASE LOAD
When calculating the power requirements for 3-phase
power use the following equation:
An inadequately sized 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 fluorescent 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.
KVA = VOLTAGE × AMPERAGE × 1.732
1000
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.
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.
