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 seri-
ous 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 name-
plate 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.
EXTENSION CORDS
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Recommended Minimum Wire Gauge for Extension Cords
Nameplate
Amperes
Extension Cord Length
25’
0 - 5
50’
75’
100’
150’
200’
16
16
16
14
12
12
5.1 - 8
16
16
14
12
10
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8.1 - 12
12.1 - 15
15.1 - 20
14
14
12
10
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12
12
10
10
10
10
10
10
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