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Extension Cords
Grounded1. 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 2.
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.)
The smaller the gauge number of the 3.
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.)
When using more than one extension 4.
cord to make up the total length, make
sure each cord contains at least the
minimum wire size required.
(See Table A.)
If you are using one extension cord for 5.
more than one tool, add the nameplate
amperes and use the sum to determine
the required minimum cord size.
(See Table A.)
If you are using an extension cord 6.
outdoors, make sure it is marked with the
sufx “W-A” (“W” in Canada) to indicate it
is acceptable for outdoor use.
Make sure the extension cord is properly 7.
wired and in good electrical condition.
Always replace a damaged extension
cord or have it repaired by a qualied
electrician before using it.
Protect the extension cords from sharp 8.
objects, excessive heat, and damp or
wet areas.
RECOMMENDED MINIMUM WIRE GAUGE
FOR EXTENSION CORDS* (120/240 VOLT)
NAMEPLATE
AMPERES
(at full load)
EXTENSION CORD
LENGTH
25’ 50’ 75’ 100’ 150’
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 - - -
TABLE A
* Based on limiting the line volt-
age drop to ve volts at 150% of
the rated amperes.
Symbology
Double Insulated
Canadian Standards Association
Underwriters Laboratories, Inc.
V~
Volts Alternating Current
A
Amperes
n
0
xxxx/min.
No Load Revolutions per Minute
(RPM)