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Grounded appliances require a three wire extension cord. Double Insulated appliances can use
1.
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 appliance damage. (See Figure C, below.)
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, makesure 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 appliance, 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 suffix "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 electrician before using it.
8.
Protect your extension cords from sharp objects, excessive heat, and damp or wet areas.
Recommended Mimimum Wire Gauge for 120 Volt Extension Cords*
Nameplate
Amperes (At
Full Load)
0 - 2.0
2.1 - 3.4
3.5 - 5.0
6.1 - 7.0
7.1 - 12.0
12.1 - 16.0
16.1 - 20.0
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SKU 92388
EXTENSION CORDS
Extension Cord Length
25 Feet
50 Feet
18
18
18
18
18
18
18
16
16
14
14
12
12
10
SYMBOLOGY
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For technical questions, please call 1-800-444-3353
Figure C
75 Feet
100 Feet
18
18
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16
16
14
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12
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10
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150 Feet
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