The biggest reason is current draw. There are less losses in the wires
from the panel to the motor with a 220 V moter drawing 7 amps than there are
with a 115 V motor drawing 14 amps. For the average guy with a shop in the
basement it doesn't mean much at all but if you have a long run of #14 wire
to the motor at 115V you may lose a few volts resulting in less torque.

Rick

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"Denis Caissie" wrote in message
...
What are the advantages of a 220V connection vs a 115V connection for
power
tools?