Use and Care Manual

4
Fig. C
Fig. D
Fig. B
GROUNDING
WARNING Improperly connecting the
grounding wire can result in the risk of elec-
tric shock. Check with a qualifi ed electrician
if you are in doubt as to whether the outlet is
properly grounded. Do not modify the plug
provided with the tool. Never remove the
grounding prong from the plug. Do not use
the tool if the cord or plug is damaged. If
damaged, have it repaired by a MILWAUKEE
service facility before use. If the plug will not
fi t the outlet, have a proper outlet installed by
a qualifi ed electrician.
Grounded tools require a three wire extension
cord. Double insulated tools can use either a two
or three wire extension cord. 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. Refer to the table shown to determine the
required minimum wire size.
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. When using more than one extension
cord to make up the total length, be sure each cord
contains at least the minimum wire size required.
If you are using one extension cord for more than
one tool, add the nameplate amperes and use the
sum to determine the required minimum wire size.
Guidelines for Using Extension Cords
• If you are using an extension cord outdoors, be
sure it is marked with the suffi x “W-A” (“W” in
Canada) to indicate that it is acceptable for outdoor
use.
• Be sure your extension cord is properly wired
and in good electrical condition. Always replace a
damaged extension cord or have it repaired by a
qualifi ed person before using it.
• Protect your extension cords from sharp objects,
excessive heat and damp or wet areas.
READ AND SAVE ALL
INSTRUCTIONS FOR FUTURE USE.
* Based on limiting the line voltage drop to fi ve volts at
150% of the rated amperes.
EXTENSION CORDS
Recommended Minimum Wire Gauge
For Extension Cords*
Extension Cord Length
Nameplate
Amperes
25' 50' 75' 100' 150'
0 - 2.0
2.1 - 3.4
3.5 - 5.0
5.1 - 7.0
7.1 - 12.0
12.1 - 16.0
16.1 - 20.0
18
18
18
18
16
14
12
18
18
18
16
14
12
10
18
18
16
14
12
10
--
18
16
14
12
10
--
--
16
14
12
12
--
--
--
SYMBOLOGY
Amperes
Volts
Alternating Current
No Load Revolutions
per Minute (RPM)
Underwriters Laboratories, Inc.
United States and Canada
MILWAUKEE Dymodrills are provided with a 20
amp locking plug (NEMA L5-20). MILWAUKEE
meter boxes may be provided with either a 20 amp
locking or a 30 amp (NEMA L5-30) locking plug
depending on the model .
Grounded Tools:
Tools with Three Prong Plugs
Tools marked “Grounding Re-
quired” have a three wire cord
and three prong grounding plug.
The plug must be connected to
a properly grounded outlet (See
Figures A and B). 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.
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.
Your tool must be plugged into an appropriate out-
let, properly installed and grounded in accordance
with all codes and ordinances. The plug and outlet
should look like those in Figures A and B.
Double Insulated Tools:
Tools with Two Prong Plugs
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 Un-
derwriters Laboratories, Inc., the
Canadian Standard Association and the National
Electrical Code. Double Insulated tools may be
used in either of the 120 volt outlets shown in
Figures C and D.
Fig. A
WARNING To reduce the risk of injury,
always use a Ground Fault Circuit Interrupter
(GFCI) with diamond coring equipment to
reduce the risk of shock hazards. Always
position the GFCI as close as possible to the
power source.