CNC newbie electronics query

[Clive S]

Skydeals What steppers are you using?
""I havent bought the cy 4 cable yet but i was wondering if all of them come with a wire which is used as ground as well as the 4 wires for driver to motor connection. If so do i connect all the ground wires at the driver end (between driver and motor) to the star point. Am i alright right in the choice of wires chosen and could you advise me on wire between BOB and driver.""
You need 4 core cy cable I use 1mm but some use 1.5mm the screens (braid) of the cy cable are all connected together at the star point at the motor end the cy cable screen is just insulated ( not connected).
I use cat 5 cable between the BOB and driver (twisted pairs) ..Clive