Craftsman 919.679470, Owner'S Manual

Page: 10 / 33

10 — ENG
OBTAINING ELECTRICITY FROM
GENERATOR
There are basically two ways to obtain electricity form a
generator:
• Use of extension cords directly form the generator
to the appliance, lights, tools, etc.
• Use of a double-throw transfer switch installed
directly to the main electrical supply outside of the
house.
Extension Cord
When using an appliance or tool at a considerable distance
from the generator, a 3-wire extension cord that has a
3-blade grounding plug and 3-slot receptacle that accepts
the tool’s plug should be used. A cord of adequate size
must be used. A minimum of 12 gauge wire size with at
least a 20 amp draw can be used. When amperage
exceeds 20 amps a 10 gauge wire size should be used.
RECEPTACLES
Your generator is equipped with duplex 120 volt receptacles
and duplex 240 volt receptacles.
The unit is also equipped with a 15 amp circuit breaker for
the 120 volt receptacles and a 20 amp circuit breaker for
the 240 volt receptacles which are provided to protect the
generator against electrical overload. If the circuit breaker
trips, unplug electrical load from receptacle. Let circuit
breaker cool down and then push circuit breaker button to
reset.
GENERATOR CAPACITY
Exceeding the rated capacity of your generator can
result in serious damage to your generator and connected
electrical devices. You should observe the following to
prevent overloading the unit:
• Starting and running wattage requirements must be
calculated to match your generator wattage capacity.
• Resistive load appliances such as light bulbs, TV’s
and microwaves, have the same starting and running
wattage. The wattage used for calculating the capacity
can usually be found on each of these appliances.
Some inductive appliances and tools will list on the motor
name plate, the starting and running voltage and amperage
requirements. Use the following formula to convert voltage
and amperage to wattage:
(Volts X Amp = Watts)
Inductive load appliances and tools such as refrigerators,
air compressors and washers require approximately 2 to
4 times the listed running wattage for starting the equip-
ment. This initial load only lasts for a few seconds on
start-up but is very important when figuring your total
wattage to be used.
NOTE: Always start your largest electric motor first, and
then plug in other items, one at a time.
The guide below is provided to assist you in determining
the appliances and tools that can be run with the wattage
capacity of your generator.
20V 20A
20V 20A
NEMA 5-20R NEMA 6-20R
240V/20V
240V/20V
15 15
20
20