i am a novice and just guessing, ok?
ive always heard rpm equals horsepower. so if the rpms are the same, you would end up with the same horsepower. 240 volts will cut down on the amperage drawn. less current burned. some swear by 240 volts and some by 120. my saw is on 120 and i see no need to change it as it works flawlessly now.
thats just my humble opinion.
light travels faster than sound, this is why some people seem bright til you hear them speak.
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