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Extension Cords
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.)
5. 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 cord size. (See Table A.)
6. If you are using an extension cord outdoors, make
sure it is marked with the suffix "W-A" ("W" in
Canada) to indicate it is acceptable for outdoor use.
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For technical questions, please call 1-800-444-3353.
7. Make sure the extension cord is properly wired
and in good electrical condition. Always replace
a damaged extension cord or have it repaired
by a qualified electrician before using it.
8. Protect the extension cords from sharp objects,
excessive heat, and damp or wet areas.
RECOMMENDED MINIMUM WIRE GAUGE
FOR EXTENSION CORDS*
NAMEPLATE
AMPERES
25'
(at full load)
0 – 2.0
18
2.1 – 3.4
18
3.5 – 5.0
18
5.1 – 7.0
18
7.1 – 12.0
18
12.1 – 16.0
14
16.1 – 20.0
12
* Based on limiting the line volt-
TABLE A
age drop to five volts at 150% of
(120/240 VOLT)
EXTENSION CORD
LENGTH
50'
75' 100' 150'
18
18
18
16
18
18
16
14
18
16
14
12
16
14
12
12
14
12
10
12
10
-
10
-
-
the rated amperes.
Item 60625
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