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The smaller the gauge number of the wire, the greater the capacity of the cord. For ex-
ample, a 14 gauge cord can carry a higher current than a 16 gauge cord.
(See Table A.)
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.)
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.)
If you are using an extension cord outdoors, make sure it is marked with the sufx “W-A”
(“W” in Canada) to indicate it is acceptable for outdoor use.
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 qualied electrician before
using it.
Protect the extension cords from sharp 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 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 - - -
TABLE A * Based on limiting the line voltage drop to ve volts at 150% of the rated amperes.
Symbology
Double Insulated V~ Volts Alternating Current
Canadian Standards Association AAmperes
Underwriters Laboratories, Inc. n0 xxxx/min. No Load Revolutions per Minute
(RPM)
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