Harbor Freight Tools 31810 - Manual (Page 6)

SKU 31810 For technical questions, please call 1-800-444-3353. Page 6
The tool must be plugged into an 3.
appropriate outlet, properly installed
and grounded in accordance with all
codes and ordinances. The plug and
outlet should look like those in the
preceding illustration. (See 3-Prong
Plug and Outlet.)
Extension Cords
Grounded 1. 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 exten-
sion cords with inadequately sized
wire causes a serious drop in voltage,
resulting in loss of power and pos-
sible 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 exten- 4.
sion 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
5.
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 6.
outdoors, make sure it is marked with
the suffix “W-A” (“W” in Canada) to
indicate it is acceptable for outdoor
use.
Make sure the extension cord is prop- 7.
erly wired and in good electrical con-
dition. Always replace a damaged
extension cord or have it repaired by
a qualified electrician before using it.
Protect the extension cords from
8.
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’ 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
voltage drop to five volts at
150% of the rated amperes.
Symbology
Double Insulated
Canadian Standards Association
Underwriters Laboratories, Inc.
V~
Volts Alternating Current
a
Amperes
n0 xxxx/min.
No Load Revolutions per Minute
(RPM)