hey everybody, need some info on how to change my delta contractor saw from 110 to 220 . never rewired any of my power tools but have known people who have and was told that it is the way to go. anybody know how to change the wires around?
any help would be great. thanks. finicky
Replies
There is most likely a diagram inside the wiring cover on the motor. You may possibly also have to change the switch.
If you don't find a diagram under the cover please include the model number in your next post.
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Men will never be free until the last king is strangled with the entrails of the last priest.
~ Denis Diderot
the table saw model # 36-978 and there is a half ### diagram that i don't understand. i need it explained to me and I'm quite capable of doing the change over. thanks
The motor # would be more helpful than the saw #. Usually they either show groups of wires tied together with wire nuts, or the little stab on wire connectors have numbers to match up with. The wire number is usually a couple of inches back from the ends of the wire. If you can't figure it out, try to post a photo. If your wiring is as large as it should be for 110, you may not be able to tell any difference, but if you are not getting enough amps through wiring which is too small, you can tell a lot of difference by going to 220.
hey keith, thanks for taking the time to try to help. this is what i got # on the motor is A13922 115/230 v 60 hz , the wire colors are grey/yellow to neutral (in from switch) black/red from motor to circuit breaker/reset and black from switch to circuit breaker/reset, ground to motor. the only info i can see on the wire itself is 600v. and of course there is that one extra wire nut taped inside the housing just to really make you think. any thing you can come up with would be much appreciated.
thanks, finicky
Any chance you can post a picture of the diagram inside the cover?
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Men will never be free until the last king is strangled with the entrails of the last priest.~ Denis Diderot
the diagram is on reflective tape the pic does not show on camera, it's written like this. 115v 230v
1 black 2 gray 3 red 2gray
3 red 4 yellow 1 black 4 yellow
I could not find anything online without a motor brand also. The numbers don't mean much without a brand. There are lots of companies who make motors for delta, such as Marathon, Baldor, Leeson.From what you replied to dgreen, it looks like all you have to do is swap the red and black. But before you try that, lets try again to get all of the information needed to get a wiring diagram, and then give real information. Who made this motor, and please give the numbers again.
Ignoring the differnce in the colors, does the diagram look like this?
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Men will never be free until the last king is strangled with the entrails of the last priest.~ Denis Diderot
yes the lines connecting the pairs is right. my diagram does not have line 1, line 2 indicators . checking on brand
Red and gray are connected to each other.
Black and yellow go to the incoming power.
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Men will never be free until the last king is strangled with the entrails of the last priest.~ Denis Diderot
no, red and black from motor are tied together to terminal on the breaker/reset. gray and yellow are tied together to neutral/white from switch. the black from switch is connected to the other terminal of the breaker/reset. and of course green from switch to ground screw motor. now when i say in from switch i mean the power cable inline plug behind motor.
And that is correct for 115v operation. I thought you wanted to wire it for 230v.
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Men will never be free until the last king is strangled with the entrails of the last priest.~ Denis Diderot
Here is the pic of what i have
Attachment now there.
You need to remove the gray and red from the wire nuts and connect them together using that spare wire nut taped to the motor. Your black and yellow are already connected to the incoming juice.
It looks to me like you need to replace your switch with a dpst.
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Men will never be free until the last king is strangled with the entrails of the last priest.~ Denis Diderot
The picture didn't make it.
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Men will never be free until the last king is strangled with the entrails of the last priest.~ Denis Diderot
It's been six or seven years since I rewired mine. I remember being confused by the (sketchy) information under the motor plate.
I did what I thought was right, based on that sketchy information. (I'm thinking that maybe the wire colors were only represented by initials...... 'G' meant green).
When I test ran it, it was very slow, and much noisier than normal, with a loud buzz. I turned it off quickly, and tried again.
Been running 220 since then, with no regrets, and no apparent damage from the mistake.
A point not made so far is that your saw likely will not perform any differently when you convert to 230 volt operation. No matter what the input voltage, the saw operates internally at 115 volts. It doesn't know or care whether the input voltage is 115 volts or 230 volts.
Are you experiencing any problems with the saw now?
hey thanks for the info. the answer to your question is no, the saw works fine, but i have supply issues in my shop/garage. i just don't have anymore room in my panel to add anymore 20amp circuits and i don't want to break up the 220 because i use it for my welder also. i have had people tell me that the performance is better with 220 on their saw, so i guess we'll see.
thanks, finicky
hey all, just spoke to a friend of a friend who repairs these motors and is a woodworker, and he tells me that the switch does not need replacement and that with the exception of switching wires the plug end is all i need. he also said that it will definitly be noticeable when the saw is running through hard to cut material. plus everything runs better on 220.. will keep you posted.
thanks finicky
hello finicky1
I just have to add that weather on 220 or 110 ,that saw should only be on a 15 amp breaker. as for the old 110 vs220 debate ,it is said that two heads is better then one.the same here two live feeds is better then one ,its not more power it is simply a better source of that power.
enjoy Dan the woodbug
If there are only two terminals on the back of the switch it will need to be replaced.
You need to break both hot wires.
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Men will never be free until the last king is strangled with the entrails of the last priest.~ Denis Diderot
As some one else already pointed out, your friend is mistaken about not needing to change out the original switch if it is, as is likely, just a single pole. For safety, the switch on a machine wired for 220 volts needs to be able to cut the power to both wires going to the motor since both wires are hot. A single pole switch will turn the motor on and off but electrical safety, and electrical codes, require that the motor not have any power to it when it is not running.Your motor will only run better on 220 volts if the 110 volt circuit wasn't adequate for the saw which is quite possible.John White
Shop Manager for FWW 1999-2007
the rewire has been done! thank you all for your input, looking at this from all angles was very helpful. here's the deal. it was a simple switch of the wire order and a new plug end. the switch did not need replacement. i had the work done at an authorized delta service center for $34.72, what a bargain. i purchased the cord end prior to the repair. the one thing that i noticed right away is how the saw snaps to life when you hit the switch and no hesitation on harder woods. this makes me think that maybe my original power source wasn't delivering a full load. also i think that the motor life will be increased with this conversion. again, everything runs better on 220.
thanks for all your replys. finicky
Depending on the Amp rating of your tools, you might consider seeing if both your welder and saw can use the same circuit. I can't imagine using both at the same time. I have numerous outlets on 1 circuit as it is quite impractical for one person to run 2 or more tools at once. I do have my dust collector on a separate circuit.
As far as your tollo running better, that can depend on a number of factors. I had a contractor style saw for ahile which had an offshore motor on it. It was rated 18 AMP @ 110V or 9 AMP @ 220V. 18 AMP @ 110V is going to create a lot of heat in both the circuit wires and the motor.
The work value of the motor remains unchanged, but the reduction in heat should help prolong the life of the motor and may enhance performance under heavy loading.Don
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