- Joined
- Nov 28, 2016
- Messages
- 2,410
I was about to wire my K&T horizontal mill to my RPC when I found something that I'm not sure I understand.
First, this is the data plate off the motor on the mill...
The line coming into the switchbox on back of the machine has 3 conductors and a ground. It is wired to the 'line' side of the switch/fuses...
There is an identical cable hooked to the 'load' side... this exits the switchbox and enters a second box with a transformer in it...
It is wired to the 'L1-L2-L3' terminals on the transformer. The 'T1-T2-T3' terminals are then wired to the motor.
What is the purpose of the transformer? If the motor operates on 208v 3 phase, it should run off my RPC, correct? Why would it need a transformer? Is it possibly a step down transformer to provide 220 volts from a 440 volt input?
-Bear
First, this is the data plate off the motor on the mill...
The line coming into the switchbox on back of the machine has 3 conductors and a ground. It is wired to the 'line' side of the switch/fuses...
There is an identical cable hooked to the 'load' side... this exits the switchbox and enters a second box with a transformer in it...
It is wired to the 'L1-L2-L3' terminals on the transformer. The 'T1-T2-T3' terminals are then wired to the motor.
What is the purpose of the transformer? If the motor operates on 208v 3 phase, it should run off my RPC, correct? Why would it need a transformer? Is it possibly a step down transformer to provide 220 volts from a 440 volt input?
-Bear