7
English
the dust. Allowing dust to get into your mouth or eyes, or lay on your
skin may promote absorption of harmful material. Always use properly
fitting NIOSH/OSHA approved respiratory protection appropriate for
dust exposure, and wash exposed areas with soap and water.
EXTEnSiOn COrDS
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 power 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 below 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.
Recommended Minimum Wire Gauge for Extension Cords (120 Volt)
Nameplate
Amperes
(At Full Load)
Extension Cord Length
25 Feet
50 Feet
75 Feet
100 Feet
150 Feet
200 Feet
0–2.0
18
18
18
18
16
16
2.1–3.4
18
18
18
16
14
14
3.5–5.0
18
18
16
14
12
12
5.1 –7.0
18
16
14
12
12
10
7.1–12.0
18
14
12
10
8
8
12.1–16.0
14
12
10
10
8
6
16.1–20.0
12
10
8
8
6
6
