table saw motor

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Blog entry by Marius posted 10-08-2010 08:39 AM 2154 reads 0 times favorited 8 comments Add to Favorites Watch

my table saw motor finally died…. so i took a 3hp from a compresser and the darn thing is turning backwards :( there are 2 connections inside the motor 1 white one black (and ground) swapping the 2 leads did NO difference

how do i reverse it??
there is a starter on the motor as well….
is this motor reversable there are NO acess to the 2 tabs that the power goes to (leads)

-- Marius PG_BC_CA

8 comments so far

View spanky46's profile


995 posts in 3925 days

#1 posted 10-08-2010 12:43 PM

Marius, I could be wrong but it sounds like you have a single phase motor! If so it can’t be reversed internally on its own! There may be a way to do it externally but thats above my pay grade! I’m sure there are Jocks that can tell you for sure! Sorry for your luck but don’t give-up!

-- spanky46 -- Never enough clamps...Never enough tools...Never enough time.

View lumberdog's profile


245 posts in 3802 days

#2 posted 10-08-2010 02:08 PM

If the motor is reversable you will usually find a wiring diagram on the side of of the motor or on the inside of the plate covering the wiring.

-- Lumberdog.. Morley, Michigan

View bayspt's profile


292 posts in 4239 days

#3 posted 10-08-2010 03:58 PM

If all you have is the two power leads you only have two choices to reverse the rotation of the motor. 1- mount it the other direction (doubt you can unless maybe its a contractor saw. 2- go internal to the motor and reverse the start coil (not an easy task by any means in my opinion) Let us know what you come up with.

-- Jimmy, Oklahoma "It's a dog-eat-dog world, and I'm wearing milkbone underwear!"

View longgone's profile


5688 posts in 3843 days

#4 posted 10-08-2010 04:32 PM

Put the blade on backwards and cut from the other side of the table…Just kidding. I had the same dilema years ago with a delta contractor saw I used for portability. Replaced a bad motor with a free one that a friend gave me but it ran in reverse. An electrician friend came over to look at it and we realized that it was impossible to change motor direction. I ended up buying a new motor.

View crank49's profile


4032 posts in 3506 days

#5 posted 10-08-2010 04:51 PM

You might put it on Craig’s List and either sell it and buy a replacement, or find some one who will swap. I’m afraid if you only have two wires the motor would have to be rewired internally to change rotation. If you had to pay for that, you might as well have the existing table saw’s burnt out motor re-wired.

View PurpLev's profile


8552 posts in 4183 days

#6 posted 10-08-2010 04:55 PM

I only assume you are referring to an AC motor – usually for tool applications those are non-reversible. unlike a DC motor where swapping the connection will make it turn the other way, an AC motor always turns 1 way regardless of connections.

you’d have to get a different motor. UNLESS you find out you have a reversible motor which will require you to rewire the internal parts of it (read – not the wires going to the outlet)

-- ㊍ When in doubt - There is no doubt - Go the safer route.

View Marius's profile


123 posts in 3550 days

#7 posted 10-08-2010 08:59 PM

Well folks

i went to the motor place and found out that the starter thinggy on the motor

new one re/re

27$ total
new motor costs like in the 200$ range
the 3HP one was wired for 110 BUT its a 220 motor
(no wonder the guy gave it to me FREE keeps kicking out breaker )
until this old girl dies completely ill keep the 3hp in a nice box then wire one outlet to 220

thank to all that commented

-- Marius PG_BC_CA

View Marius's profile


123 posts in 3550 days

#8 posted 10-08-2010 09:00 PM

And YES Greg i did think of putting the blade on backwards and feeding boards from outfeed side as a good Frenchman would do
BUT ......NOT !!

-- Marius PG_BC_CA

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