CK5
Register an account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members.
Need an electrician to answer this
- Thread starter doonjumper
- Start date
doonjumper
1/2 ton status
Ok so I went the route of a 5 hp 208/230 motor. The saw had a 3 phase and this switch 
Single phase motor had these wires brown, blue, and striped yellow. They were the power supply wires they wont be used
blue was connected to the 1 5 wire. the brown wire was connected to the 4 wire
Stripped white wire was grounded to motor
Can I still use the on/off switch in pic one with the new motor? If so is it possible to explain which of the wires in pic 1 get connected to wires in pic 3 and 4?
pic of single phase motor
Single phase motor had these wires brown, blue, and striped yellow. They were the power supply wires they wont be used
blue was connected to the 1 5 wire. the brown wire was connected to the 4 wire
Stripped white wire was grounded to motor
Can I still use the on/off switch in pic one with the new motor? If so is it possible to explain which of the wires in pic 1 get connected to wires in pic 3 and 4?
pic of single phase motor
Last edited:
That switch can work for the single phase motor but you will probably need to get new "heaters" for it.
Easily available at good electrical supply houses or possibly Home Depot or the like.
Easily available at good electrical supply houses or possibly Home Depot or the like.
Put up a pic of the wiring diagram on the side of the new motor or inside of the lid on the electrical connection box on the motor.
doonjumper
1/2 ton status
Unfortunately there isn't one
Unfortunately there isn't one
There is a "standard" for the numbers between high and low voltages, but unless you have no other choice I would not try it.
Also there is a method for determining which wires by using an ohm meter.
I have done both, but in this case, I doubt its necessary.
It looks like it says Baldour on the motor. This is a major brand name, there should be some info on the web.
I suspect they follow the "standard", but it should be easy to make sure. I'll dig around.
Of course, if it was running off 230 to start with, then it should already be wired right.
Hey J, I walked him through some stuff earlier on the phone.
Cool guy... Looking up some stuff tomorrow, so we will get an update tomorrow I am sure.
Cool guy... Looking up some stuff tomorrow, so we will get an update tomorrow I am sure.
Great, hope it works out OK. For some weird reason, Baldor does not list that motor on their website.
But I can't help but think there is something wrong with the site I went to. For instance, they only showed 1800 as the motor RPM. Since its not a synchronous motor, it should be 1725 with slip.
But there was not a 1725 to be seen. Either they have stopped rating their motors's actual RPM, or something else is wrong.
The motor plate shows 1725 like it should.
The reason I asked about the wires, is because it should not have more than two with a ground.
230/460 motors or 208-230/460 motors would have more wires but not a single voltage motor.
If it has more, then it must be reversible. So, if we know the wire numbers, we should be able to figure out which ones to use for each direction.
Well, actually it could be a capacitor start, capacitor run, or both. And reversible.
Either way, I hope you got it going for him.
doonjumper
1/2 ton status
Yes there were indeed more wires and since they were already connected to each other I didn't list them. Tom talked me through it and we made a plan. I'll post tomorrow. Thanks again for all the help and effort everyone.
doonjumper
1/2 ton status
Ok so today I hooked up the wires just like Bradshawtech told me to and.......vroooooooom. Fired right up. The switch box worked perfect. I havent changed the heaters yet. I thought I would wait until I put it under load. I also addressed the issue of RPM. the 3 phase motor was rated at 3200 RPM and the single at 1725 RPM. I called up Emerson and gave them all my specs. Driver shaft size, driven shaft size distance between the two. They sent me a sweet chart with many options. Even gave the belt size I would need to go with. I went to ebay found what I needed and made a couple of offers. I noticed that all I had to do was add a 2 or 3 to the part number they gave in order to determine number of grooves in the pulley. I went with two groove and option 11 which put me at 2939RPM. The only catch is I went from 3" driven to 9.25 
and 4.5" on driven to 5.5" so my belt gaurds wont work. Ill have to modify them. All in all im in this unit for right at $440 if my ebay offers are accepted. Im hoping to sell my 3 phase motor to recoup some cost 
Thanks again to everyone for the time and effort you put in and special thanks to Tom for giving me a plan of attack over the phone!!
First offer won at $32
shipped *used* was asking $43.
Next one is gonna be shocker if accepted $47.00 shipped *new* Asking $75.00 shipped
Bought two, yes two belts for $15 shipped. Normally they are $17 each
and 4.5" on driven to 5.5" so my belt gaurds wont work. Ill have to modify them. All in all im in this unit for right at $440 if my ebay offers are accepted. Im hoping to sell my 3 phase motor to recoup some cost Thanks again to everyone for the time and effort you put in and special thanks to Tom for giving me a plan of attack over the phone!!First offer won at $32
shipped *used* was asking $43.Next one is gonna be shocker if accepted $47.00 shipped *new* Asking $75.00 shipped
Bought two, yes two belts for $15 shipped. Normally they are $17 each
Last edited:
Great news. Now for performance details when it gets completed.
