ELECTRICAL INFORMATION
DOUBLE INSULATION
Double insulation is a concept in safety in electric power tools that 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.
WARNING: The double insulated system is intended to protect the user from shock
resulting from a break in the tools internal insulation. Observe all normal safety
to avoid electrical shock.
NOTE: Servicing a product with double insulation requires extreme care and knowledge of the system.
This should be performed only by a qualified service technician. For service, we suggest you return the
product to your nearest authorized service center for repair. Always use original replacement parts
intended for your particular model of tool when servicing
WARNING: This tool is for outdoor use only. Do not expose to rain or use in damp locations.
Guidelines for using extension cords
Make sure your extension cord is in good condition. When using an extension cord, be sure to use one
heavy enough to carry your product will draw. An undersized cord will cause a drop in line voltage
resulting in loss of power and overheating. The table below shows the correct size to be used according to
cord length and nameplate ampere rating. If in doubt, use the next heavier gauge. The smaller the gauge
number, the heavier the cord.
Minimum Gauge for Extension Cords (AWG)
(When using 120 V only)
12 16 14 12 Not Recommended
Make sure your extension cord is properly wired and in good condition. Always replace a damaged
extension cord or have it repaired by a qualified person before using it.
Protect your extension cords from sharp objects, excessive heat and damp or wet areas.
Use a separate electrical circuit for your tools. This circuit must not be less than a # 12 wire and should be
protected with a 15 Amp time-delayed fuse. Before connecting the motor to the power line, make sure the
switch is in the OFF position and the electric current is rated the same as the current stamped on the motor
nameplate. Running at a lower voltage will damage the motor.
WARNING: This tool must be grounded while in use to protect the operator from electric shock.
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