Craftsman 919.670040 Owner's Manual page 13

NOTE: Some inductive appHiances and tooHs will Hist
on the motor name plate, the starting and running
voHtage and amperage requirements. Use the following
formuHa to convert voHtage and amperage to wattage:
{Volts X Amp = Watts}
AHways start your Hargest eHectric motor first, and
then pHugin other items, one at a time.
NOTE: On 120-voHt Hoads the maximum starting watt-
age shouM NOT exceed one haHfof the rated generator
wattage. ExampHe: a 4250 rated wattage generator =
2125 maximum starting wattage.
The guide is provided to assist you in determining the
appHiances and tooHs that can be ran with the wattage
capacity of your generator.
OBTAiNiNG ELECTRiCiTY FROM
GENERATOR
There are basically two ways to obtain electricity from
a generator:
Use of extension cords directly from the genera-
tor 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 a 3-dot
receptacle that accepts the tool's plug MUST be
used in order to reduce the risk of electrical shock. 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.
An extension cord that is hot
to the touch is overloaded.
Repair or replace damaged extension cords
Connecting Generator To Main Electrical
Supply
Potential hazards exist when a electrical generator is
connected to the main electrical supply coming into
the house. It is at that point that the generator could
feed back into the utility company's system causing
possible electrocution of workers who are repairing
electrical lines. To avoid back feeding of electricity into
utility systems, a double-throw transfer switch
should be installed between the generator and utility
power. This device should be installed by a licensed
electrician and in compliance with all local electrical
codes.
NOTE: When installing a Double-Throw Transfer
Switch, a minimum of 10 gauge wiring must be used.
13 -- ENG lvlGP 670040