Reply by JamesT

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Posted on converting a unisaw 1.5hp motor from 115 volt to 220 volt

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102 posts in 1874 days

#1 posted 04-16-2013 01:56 PM

I repeat. If the 110 circuit is sized correctly it will make no difference using 110 or 220. A 100 ft. cord is not the way to go, way to much voltage drop. Also re-check the motor, hard to believe a 1-1/2HP is rated 19.2 amps. That kind of current draw (watts more than 2300) is more like a 3HP.
If you are indeed drawing 19.2 amps @ 110 volts on a #12, 100 ft. cord (wiring in saw may be #14) the voltage drop may be as much as 7%-8%. The voltage reading at the saw may be 100 volts or less. Before you rewire the motor, you need an electrician to look at the entire set-up. (Just my 2 cents)

-- Jim from Doniphan

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