Drivers,BOB and PSU are in a PC case, do i earth the case

[russell]

As the title suggests i have put everything into an old PC tower case. Know i have been told i have to earth the cable screening at one end only. But what do i earth this to, the PC case. Do i have to earth the PSU and what about the case. On the PSU i have a connection marked as FG (googled it as frame ground) what do i do with this:confused:

Which cable are you referring to? While, in principal if the PSU is built to Class 2 insulation specs it is not necessary to earth it, I would recommend earthing everything. The point of not earthing the screen at both ends is to prevent currents flowing in the screen which could compromise the screening efficiency. If necessary a separate earth conductor could be included. inside the screened cable.

Russell.