For the record I did mis-speak when I said:
"Although a tool may have an amp rating, you usually are not pulling that many amps when actually using the tool"
The truth is that you are often pulling more than the rating, just not for a sustained period. The current you are pulling depends on the material being cut, if you are binding, etc. The skill and Bosch circ saws commonly see 40-60 amps, but it is not for a sustained period, at least not long enough to overheat the tool.
