Hi All,
I'm planning on running CAT5 between all the rooms in my house and a
central point.

What is the best way to run cables between floors? I'm looking at 50+
cables.

The mains wiring drops into the cupboard under the stairs but this is a very
small passage that cannot be enlarged and I wouldn't want to run the
low-voltage CAT5 alongside the mains. IEE wiring regs.

Thanks in advance,
Martin.