Table I: Recommended Minimum Wire Gauge for Extension Cords
Extension Cord Length *
Nameplate Amps
25 ft
50 ft
75 ft
100 ft
150 ft
200 ft
< 5
16
16
16 14 12 12
5 - 8
16 16 14 12 10
8 - 12
14 14 12 10
12 - 15
12 12 10 10
15 - 20
10 10 10
*
based on limiting the line voltage drop to 5V at 150% of the rated amperes.
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. When using more than one extension cord to make up the total
length, be sure each cord contains at least the minimum wire size required. If you are using one extension cord
for more than one tool, add their nameplate amperes and use the sum to determine the required minimum wire
size.
Guidelines for Using Extension Cords
If you are using an extension cord outdoors, be sure it is marked with the suffix “W-A” (“W” in Canada) to indicate
that it is acceptable for outdoor use.
Be 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 person before using it.
Protect extension cords from sharp objects, excessive heat, and damp or wet areas.
Short-Circuit Protection
This tool must only be plugged into a circuit that has a short-circuit protection device which is located ahead of the
equipment in the circuit, in accordance with local codes.
READ AND SAVE ALL INSTRUCTIONS FOR FUTURE REFERENCE.
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