In my setup, I used 5 wire microphone connectors (4 for stepper, 1 for shield) and used one pin to pass the shield through and added a spade connector to the shield right at the stepper controller. Each shield is then terminated to a copper grounding post on the enclosure that is designed for this purpose (part of the enclosure). The stepper controllers are located quite a way from the cable entry point. This has worked a treat and it would have been difficult to adapt the clamping method to this enclosure with ending up with extended unshielded wiring. Plus you can disconnect the stepper cables.