10
Double insulated
Double insulation is a concept in safety in electric power tools, which eliminates the need for the
usual three wire grounded power cord. All exposed metal parts are isolated from the internal metal
motor components with protecting insulation. Double insulated tools do not need to be grounded.
The double insulated system is intended to protect the user from shock resulting from a break in the
tool’s internal insulation. Observe all normal safety precautions to avoid electrical shock.
NOTE: Servicing of a product with double insulation requires extreme care and knowledge of the sys-
tem and should be performed only by a qualified service technician. For service, we suggest you return
the tool to your nearest authorized service center for repair. Always use original factory replacement
parts when servicing.
Extension cords
When using a power tool at a considerable distance from a power source, be sure to use an extension
cord that has the capacity to handle the current the product will draw. An undersized cord will cause a
drop in line voltage, resulting in overheating and loss of power. Use the chart to determine the minimum
wire size required in an extension cord. Only round jacketed cords listed by Underwriter’s Laboratories
(UL) should be used.
When working outdoors with a product , use an extension cord that is designed for outside use. This
type of cord is designated with “W-A” or “W” on the cord’s jacket. Before using any extension cord,
inspect it for loose or exposed wires and cut or worn insulation.
MINIMUM GAUGE FOR EXTENSION CORDS (AWG)
(WHEN USING 120 V ONLY)
Ampere Rating
Total Length of Cord in Feet (meters)
More Than
Not More Than 25' (7.6 m)
50' (15 m)
100' (30.4 m) 150' (45.7 m)
0
6
18
16
16
14
6
10
18
16
14
12
10
12
16
16
14
12
12
16
14
12
Not Recommended
Extension Cord – Make sure your extension cord is in good condition. When using an extension
cord, be sure to use one heavy enough to carry the current your product will draw. An undersized
extension cord will cause a drop in voltage resulting in loss of power and overheating. The table shows
the correct size to use depending on cord length and name plate ampere rating. If in doubt, use the next
heavier gauge. The smaller the gauge number, the heavier the cord. To reduce the risk of disconnection
of appliance cord from the extension cord during operating:
1. Make a knot as shown in Figure A. or
2. Use one of the plug-receptacle retaining straps or connectors.
WARNING
SAFETY INFORMATION