Power Requirements Portable Generator Repair
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4. Power Requirements
4.1 Determining Power Requirements
These generators are designed to operate single-phase, 60 hertz
appliances or tools running at a selectable voltage of 120 VAC or 240
VAC for the G 3.7A, G 5.6A, GS 5.6A, GS 8.5V and GS 9.7V models,
and a single voltage of 120 VAC for the G 2.5A model. Check the
nameplate or label provided on tools and appliances to make sure their
power requirements match the power output of the generator.
Some appliances and tools require a surge of current when starting.
This means that the amount of power needed to initially start the
equipment is larger than the power required to keep it running. The
generator must be capable of supplying this “surge” current. Other
types of appliances require more power than is actually stated on their
nameplates.
The information in “Approximate Starting Power Requirements” is
offered only as a general guideline to help you in determining power
requirements for different types of equipment. Check with your nearest
Wacker Dealer, or contact the manufacturer or dealer of the tool or
appliance, with questions regarding power requirements.
If the wattage is not given for a particular tool or appliance, it can be
calculated by multiplying its voltage and amperage requirements:
VOLTS x AMPS = WATTS
CAUTION: If a tool or appliance does not reach full speed within a
few seconds when switched on, turn it off immediately to avoid
damage.
CAUTION: When starting loads, DO NOT exceed two (2) times the
given Continuous Current rating for model G 2.5A, or one-and-one-half
(1½) times for all other models, as damage to the generator may occur.
See
Generator Specifications
.
• Incandescent lights and appliances such as irons and hot plates,
which use a resistive-type heating element, require the same wattage
to start and run as is stated on their nameplates.
• Fluorescent and mercury lamps require 1.2–2 times their stated watt-
age to start.
• Electrical motors and many types of electrical tools often require a
large starting current. The amount of starting current depends on the
type of motor and its use.
• Most electrical tools require 1.2–3 times their stated wattage for run-
ning.
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