4
Figure B
1. Grounded tools require a three wire extension cord.
Double Insulated tools can use either a two or three
wire extension cord.
2. As the distance from the supply outlet increases,
you must use a heavier gauge extension cord.
Using extension cords with inadequately sized wire
causes a serious drop in voltage, resulting in loss of
power and possible tool damage. (See table a.)
3. The smaller the gauge number of the wire, the
greater the capacity of the cord. For example, a 14
gauge cord can carry a higher current than a 16
gauge cord. (See table a.)
4. When using more than one extension cord to make
up the total length, make sure each cord contains at
least the minimum wire size required. (See table a.)
EXTENSION CORDS
1. Tools marked with “Grounding Required” have
a three wire cord and three prong ground-
ing plug. The plug must be connected to a
properly grounded outlet. If the tool should
electrically malfunction or break down,
grounding provides a low resistance path to
carry electricity away from the user, reducing
the risk of electric shock. (See Figure A.)
2. The grounding prong in the plug is connected
through the green wire inside the cord to the
grounding system in the tool. The green wire
in the cord must be the only wire connected to
the tool’s grounding system and must never
be attached to an electrically “live” terminal.
(See Figure A.)
3. Your tool must be plugged into an ap-
propriate outlet, properly installed and
grounded in accordance with all codes and
ordinances. The plug and outlet should look
like those in the following illustration. (See
Figure A)
DOUBLE INSULATED TOOLS: TOOLS WITH TWO PRONG PLUGS
GROUNDED TOOLS: TOOLS WITH THREE PRONG PLUGS
Figure A
1. Tools marked “Double Insulated” do not
require grounding. They have a special double
insulation system which satisfies OSHA
requirements and complies with the applicable
standards of Underwriters Laboratories, Inc.,
the Canadian Standard Association, and the
National Electrical Code. (See Figure B.)
2. Double insulated tools may be used in either
of the 120 volt outlets shown in the following
illustration. (See Figure B.)
WARNING: TO PREVENT ELECTRIC SHOCK AND DEATH FROM INCORRECT
GROUNDING WIRE CONNECTION. Check with a qualified electrician if you are in
doubt as to whether the outlet is properly grounded. Do not modify the power cord plug
provided with the tool. never remove the grounding prong from the plug. Do not use the
tool if the power cord or plug is damaged. if damaged, have it repaired by a service
facility before use. if the plug will not fit the outlet, have a proper outlet installed by a
qualified electrician.
GROUNDING
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