Craftsman 137.21807 Operator's Manual page 11

Fig. 1 shows a three-pronged electrical
plug and receptacle that has a
grounding conductor. If a properly
grounded receptacle is not available,
an adapter (Fig. 2) can be used to
temporarily connect this plug to a
two-contact grounded receptacle.
The adapter (Fig. 2) has a rigid lug
extending from it that MUST be
connected to a permanent earth
ground, such as a properly grounded
receptacle box.
CAUTION
In all cases, make certain the
receptacle is properly grounded. If
you are not sure, have a qualified
electrician check the receptacle.
CAUTION
This tool is for indoor use only. Do
not expose to rain or use in damp
locations.
Fig. 1
Properly Grounded
Three-Pronged Receptacle
Fig. 2
Grounding Lug
Adapter
Three-Pronged Plug
Grounding Prong
Make sure this
is connected
to a known
ground.
Two-Pronged
Receptacle
CAUTION
This tool must be grounded while
in use to protect the operator from
electric shock.
MINIMUM GAUGE FOR EXTENSION CORDS (AWG)
(When using 120 volts only)
Ampere Rating
More Than Not More Than 25ft. 50ft. 100ft. 150ft.
0 6
6 10
10 12
12 16
11 11
Total length of Cord
18 16 16 14
18 16 14 12
16 16 14 12
14 12
Not Recommended