January 25, 2014
I'm glad you asked because there is often a lot of confusion around this topic. In short, there are probably only 2 advantages of converting to 240v that would ever apply to the average user.
1) If the table saw is located a far distance from the original breaker box (say, 150-200 ft+) a larger voltage will reduce the effects of something called voltage drop, a problem most common at start-up. If you trip a breaker and/or your saw if slow to get up to speed (in the first 2-5 seconds), then you might be experiencing this issue.
2) If you had an existing 120v circuit with 3 wires (+ ground) but the wires were too small to safely supply the power to the tool, you can convert it to 240v. It would then pull 50% less current through each wire thus allowing for safe use of the smaller wires. This can save you some install money, but only if you have the right number and type of wires to begin with.
Common misconceptions are that 240v will make your motor turn faster, generate more power, or consume less electricity and save money. These are all myths.
If you find you trip the breaker often, then 240v might be the answer for you. But a properly sized 120v circuit should rarely give you a problem.
Hope this helps and best of luck!
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