Grounding warning, Read and save all instructions for future use, Extension cords – Milwaukee Tool 6470-21 User Manual

Page 4

Fig. B Fig. C

Fig. A

grounding

Warning

Improperly connecting the

grounding wire can result in the risk of electric

shock. Check with a qualified 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 be-

fore use. If the plug will not fit the outlet, have a

proper outlet installed by a qualified electrician.

Grounded Tools:

Tools with Three Prong Plugs

Tools marked “Grounding Required” have a three

wire cord and three prong grounding plug. The

plug must be connected to a properly grounded

outlet (See Figure A). 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 outlet, properly

installed and grounded in ac-

cordance with all codes and

ordinances. The plug and

outlet should look like those

in Figure A.
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 Under-

writers Laboratories, Inc., the

Canadian Standard Associa-

tion and the National Electri-

cal Code. Double Insulated

tools may be used in either of

the 120 volt outlets shown in

Figures B and C.

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 suffix “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 qualified 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 five volts at

150% of the rated amperes.

exTension cords

Recommended Minimum wire Gauge

For Extension Cords*

Nameplate Amps

Extension Cord Length

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