Quote Originally Posted by deannos View Post
The cable is 4 core screened and i have used this to connect the motors to the drivers and also to connect the drivers to the BOB
If both the drivers and BOB are inside the case they do not need screened cable between them. The screen of the motor cable should be connected to the case and left unconnected at the machine end. Both the machine and the computer case should be earthed via the mains cable.

Russell.