Page 8 of 24
Extension Cords
•
Grounded tools require a 3-wire extension cord. Double Insulated tools can use either a 2- or
3-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 serious drop in voltage, resulting in
loss of power and possible tool damage.
•
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. Minimum extension cord wire
size is shown in the following table:
Minimum Wire Size Of Extension Cords
Nameplate AMPS
Cord Length
25'
50'
100'
150'
0-6
18 AWG
16 AWG
16 AWG
14 AWG
6-10
18 AWG
16 AWG
14 AWG
12 AWG
10-12
16 AWG
16 AWG
14 AWG
12 AWG
12-16
14 AWG
12 AWG
NOT RECOMMENDED
•
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.
•
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.
•
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.
•
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.
•
Protect your extension cords from sharp objects, excessive heat, and damp or wet areas.
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