In article s.com,
(Robert Bonomi) wrote:

Keep in mind that the light bulb example is totally different than the
saw. In the light bulb, the watts go into heating the filament. A 60
watt bulb is just that regardless of the voltage/current relationship to
create the power.

In the case of the saw, most of the energy goes into cutting wood. Only
a small amount goes into heating the motor. The motor heating goes as
I^2*R. As the lower voltage requires a higher current, there is more
heating in the lower voltage situation.

Dick

In article ,
Doug Miller wrote:
In article , "BadgerDog"
wrote:
Why would the saw run cooler if there is more voltage to the saw?

Because the current is less, and it's current that generates heat, not
voltage.

Oh, really?

Which generates more heat:
1) a 60-watt lightbulb (designed for 120V) running at 120v
2) a 60-watt lightbulb (designed for 240V) running at 240v

Note that #1 is drawing 1/2 amp, and #2 is drawing only 1/4 amp.


"Watts is watts", applies -- It doesn't matter how they're produced.