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8
ELECTRICAL
DOUBLE INSULATION
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.
WARNING
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 system and
ELECTRICAL CONNECTION
This product has a precision-built electric motor. It should be connected to a power supply that
is 120 volts, 60 Hz, AC only (normal household current). Do not operate this product on direct
current (DC). A substantial voltage drop will cause a loss of power and the motor will overheat. If
the product does not operate when plugged into an outlet, double-check the power supply.
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
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by Underwriter’s Laboratories (UL) should be used.
When working outdoors with a product, use an extension cord that is designed for outside use.
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Before using any extension cord, inspect it for loose or exposed wires and cut or worn insulation.
It is possible to tie the extension cord and power cord in a knot to prevent them from becoming
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power cord into the receptacle end of the extension cord. This method can also be used to tie
two extension cords together.
Fig. 1
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