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6. WATTAGE INFORMATION
Some appliances need a "surge" of energy when starting.
This means that the amount of electrical power needed to start the appliance may exceed the amount
needed to maintain its use.
Electrical appliances and tools normally come with a label indicating voltage, cycles / Hz, amperage
(amps) and electrical power needed to run the appliance or tool.
Check with your nearest dealer or service center with questions regarding power surge of certain
appliances or power tools.
■
Electrical loads such as incandescent lamps and hot plates require the same wattage to start as is
needed to maintain use.
■
Loads such as fl uorescent lamps require 1.2 to 2 times the indicated wattage during start-up.
■
Loads for mercury lamps require 2 to 3 times the indicated wattage during start-up.
■
Electrical motors require a large starting current. Power requirements depend on the type of motor and
its use. Once enough "surge" is attained to start the motor, the appliance will require only 50% to 30%
of the wattage to continue running.
■
Most electrical tools require 1.2 to 3 times their wattage for running under load during use. For
example, a 5000 watt generator can power a 1800 to 4000 watt electrical tool.
■
Loads such as submersible pumps and air compressors require a very large force to start. They need 3
to 5 times the normal running wattage in order to start.
For example, a 5000 watt generator would only be able to drive a 1000 to 1700 watt pump.
NOTE
The following wattage chart is general guide only. Refer to your specifi c appliance for correct wattage.
VOLTAGE DROP IN ELECTRIC EXTENSION CORDS
When a long electric extension cord is used to connect an appliance or tool to the generator, a certain
amount of voltage drop or loss occurs in the extension cord which reduces the effective voltage available
for the appliance or tool.
The chart below has been prepared to illustrate the approximate voltage loss when an extension cord of
300 feet (approx. 100 meters) is used to connect an appliance or tool to the generator.
To determine the total wattage required to run
a particular electrical appliance or tool, multiply
the voltage fi gure of the appliance/tool by the
amperage (amps) fi gure of same. The voltage
and amperage (amps) information can be found
on a name plate which is normally attached to
electrical appliances and tools.
Applications
Applicable Wattage
(approx.X)
50 or 60 Hz
Incandescent lamp, Heater
1350
Fluorescent lamp, Electric tool
700
Mercury lamp 400
Pump, Compressor 300
Nominal
cross
section
A.W.G.
Allowwable
current
No.of
strands
/ strands
dia.
Resistance
Current Amp.
mm
2
No. A No./mm Ω/100m 1A 3A 5A 8A 10A 12A 15A
0.75 18 7 30/0.18 2.477 2.5V 8V
12.5V
----
Voltage drop
1.27 16 12 50/0.16 1.486 1.5V 5V 7.5V 12V 15V 18V -
2.0 14 17 37/0.26 0.952 1V 3V 5V 8V 10V 12V 15V
3.5 12 to 10 23 45/0.32 0.517 - 1.5V 2.5V 4V 5V 6.5V 7.5V
5.5 10 to 8 35 70/0.32 0.332 - 1V 2V 2.5 3.5V 4V 5V
R1700igenGU7322.indd10R1700igenGU7322.indd10 2011/11/2113:34:212011/11/2113:34:21
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