Mill Electric Question

[damnesia]

Not sure if this should be in the Lighting & Electrical forum but that seems to be for garage/shop wiring so I'll start here.

I have a mill which has an electrical box attached to it. I'm trying to determine what the box is. I have a service disconnect with 4 wires coming in, the green wire grounding to the chassis. The other three wires go through a switch then down to the box in the pictures that are attached. The machine has a 3PH motor and flood coolant pump. What is this thing?

Thanks.

 

[Doug Arthurs]

Green looks like a three phase motor starters. Probably one for forward and the other switches two phases to give you reverse. transformer for providing control voltage

 

[chard98]

Doug is correct. 2 contactors for forward and reverse. And the transformers for control voltage. The machine must use a simple forward reverse switch instead of a heavy drum switch that a Bridgeport mill uses. Looks like it should work.