Bridgeport wiring help

[BJahn]

I finally got authorization from my local electrical service provider (PG&E) to increase the electric panel size for my home, so I'm temporarily hooking my old Bridgeport 2J into my home clothes dryer circuit via my cheap 1-3 phase converter.

When first turning the switch to my mill, I only got a hum from the motor.

Can anyone put names on the four color wires coming from my mill so I can re-connect for better success?

Bruce Jahn in Northern California

[prebancolt]

I finally got authorization from my local electrical service provider (PG&E) to increase the electric panel size for my home, so I'm temporarily hooking my old Bridgeport 2J into my home clothes dryer circuit via my cheap 1-3 phase converter.

When first turning the switch to my mill, I only got a hum from the motor.

Can anyone put names on the four color wires coming from my mill so I can re-connect for better success?

Bruce Jahn in Northern California


This may or may not help but.....

Without knowing anything about what you have, if the motor on the mill is 240v 3 phase, you should have three motor leads and one ground wire. It shouldn't matter which way you hook up the motor leads; the worst that will happen is that the motor will spin backwards. If that happens, switch any two of the leads.

Someone else chime in on the humming.......


J

[tp555]

Assuming the wiring is correct, what is the motors power rating? Also what is the inverters rating? Try spinning the spindal after you turn it on.If this does work then your inverter is not matched to the motors power level. I have a 2hp
mill and use a 1-3 rated inverter.This works fine. I bought an old surface grinder
with a 1 hp motor and tried the 1-3 inverter and it would not work.. I got the humming sound. I could spin the shaft and it would spin. I had to use a lower rated inverter, 1/2 to 1 1/2 hp and this works. I used a bridgeport at one job I had and it had a 1hp motor. I don't remember what model it was. So check your
levels and report back.regards.

[poackley]

Try calling Enco company. That is where I purchased the converter for my Bridgeport and they were very helpful. They are located in Chicago I think. You have to have the converter matched to the size if the motor.