Load Application - MQ Power WHISPERWATT DCA25SSIU4FC8 Operation Manual

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.
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.
WATTS = VOLTAGE × 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
Single-phase induction motors
Electric heaters, incandescent lamps
Fluorescent lamps, mercury lamps
Electronic devices,
communication equipment
Common power tools
Table 6. Cable Selection (60 Hz, Single-Phase Operation)
Load in Watts
Current
in
At 120 At 240
Amperes
Volts Volts
2.5 300 600
5 600 1,200
7.5 900 1,800
10 1,200 2,400
15 1,800 3,600
20 2,400 4,800
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.
DCA25SSIU4FC8 60 HZ GENERATOR • OPERATION MANUAL — REV. #0 (08/23/22) — PAGE 23
Power Factor
0.4–0.75
1.0
0.4–0.9
1.0
0.8
Maximum Allowable Cable Length
#10 Wire #12 Wire #14 Wire
1,000 ft. 600 ft. 375 ft.
500 ft. 300 ft. 200 ft.
350 ft. 200 ft. 125 ft.
250 ft. 150 ft. 100 ft.
150 ft. 100 ft. 65 ft.
125 ft. 75 ft. 50 ft.
THREE-PHASE LOAD
When calculating the power requirements for 3-phase
power use the following equation:
KVA =
NOTICE
If 3-phase load (kVA) is not given on the equipment
nameplate, approximate 3-phase 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 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.
#16 Wire
DANGER
250 ft.
125 ft.
Before connecting this generator to any building's
100 ft.
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.

LOAD APPLICATION

VOLTAGE × AMPERAGE × 1.732
1000