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exTeNsION CORDsGrounded1. tools require a three wire extension cord.
As the distance from the supply outlet increases, you must use a heavier gauge 2.
extension cord. Using extension cords with inadequately sized wire causes a seri-
ous drop in voltage, resulting in loss of power and possible tool damage.
(see Table A.)
The smaller the gauge number of the wire, the greater the capacity of the cord. For 3.
example, 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 4.
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 nameplate5. am-
peres 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 suffix 6.
“W-A” (“W” in Canada) to indicate it is acceptable for outdoor use.
Make sure your extension cord is properly wired and in good electr ical condition. 7.
Always replace a damaged extension cord or have it repaired by a qualified electri-
cian before using it.
Protect your extension cords from sharp objects, excessive heat, and damp or wet 8.
areas.
ReCOMMeNDeD MINIMuM WIRe gAuge FOR exTeNsION CORDs*
(120 OR 240 VOLT)
NAMepLATeAMpeRes(at full load)
exTeNsION CORD LeNgTH25 Feet 50 Feet 75 Feet 100 Feet 150 Feet0 – 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 five volts at 150% of the rated amperes.