SKU 94560
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PAGE 9
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 Figure C.)
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 Figure C.)
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 Figure C.)
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 Figure C.)
6.
If you are using an extension cord outdoors, make sure it is marked with the suf-
fix “W-A” (“W” in Canada) to indicate it is acceptable for outdoor use.
7.
Make 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 elec-
trician before using it.
8.
Protect your extension cords from sharp objects, excessive heat, and damp or
wet areas.
RECOMMENDED MINIMUM WIRE GAUGE FOR EXTENSION CORDS*
(120 OR 240 VOLT)
NAMEPLATE
AMPERES
(At Full Load)
EXTENSION CORD LENGTH
25 Feet
50 Feet
75 Feet
100 Feet 150 Feet
0 – 2.0
18
18
18
18
16
2.1 – 3.4
18
18
18
16
14
3.5 – 5.0
18
18
16
14
12
5.1 – 7.0
18
16
14
12
12
7.1 – 12.0
18
14
12
10
-
12.1 – 16.0
14
12
10
-
-
16.1 – 20.0
12
10
-
-
-
FIGURE C
* Based on limiting the line voltage drop to five volts at
150% of the rated amperes.
