although the benefits are considerably less than 1/2 the cost. I doubt there's any advantage if the saw is on a dedicated circuit. The kicker is that many machines run on 120 volt circuits aren't on dedicated circuits. If the lights dim when a machine is turned on, it'd benefit from a dedicated circuit IMO. If you're going to install a dedicated circuit, why not go with 240 volts? A 20 amp 120 volt circuit will supply approximately 2400 watts. The same circuit at 240 volts will supply 4800 watts.