Bridgeport Series I Motor Wiring

[supahonkey]

I have an older Bridgeport Series I mill with a 1.5HP US Motors motor on it. The wires were cut at the electrical box on the motor. How do I know which wires are which? I see there are two sets of wires bound together. One set has 4 wires while the other set has 5. Any help would be appreciated as I would love to get my mill going.

[machintek]

Do I see little bands wrapped around each wire about a quarter inch wide? Those may be the missing wire numbers. Take a look.

George

[supahonkey]

Unfortunately, the labels say nothing. They are actually small copper clips that have been bent around the wire.

[Perfect Circle]

There should be three wires from the motor connected together, and then each of the 3 phases from your converter should hook up to 2 wires from the motor.

Line 1 connects to T1 and T7
Line 2 connects fto T2 and T8
Line 3 connects to T3 and T9

connect T4, T5 and T6 togeter and tape off.
Thats about all I remember...please be safe if you give it a try.

[Woody111]

Take it to a good motor shop they can figure it out. Most effective way.

[Woody111]

Those copper clips should be the wire numbers look close seen it done that way many times 1-9

[Al_The_Man]

They sure look like the ID bands to me, have you tried really cleaning them off?
This is a list of most motor connection details if you try and reverse engineer it.
Connections
Nine connections is usually the typical double star connections for either 240/460v operation (parallel or series star).
Al.

[gdwood3rd]

Can you shoot me some more info ; the exact mill name,type and year ?

[supahonkey]

Thanks guys. I can't say that I am 100% sure the labels say nothing. I need to clean them. I looked at the tags yesterday and didn't see any obvious writing on them. I will check when I get home.

[Perfect Circle]

Using the img below verify the setup
see image below look at the WYE configuration this is most likely what you have.
You can verify this with a ohm meter

[supahonkey]

The ID numbers were on the clips. There clips were so dirty that they had to be cleaner quite a bit before the numbers were visible. I can see the wiring on the label, even though it too is barely visible from the fire the mill was in. Thanks!