Peter Crosland wrote:
The problem is that the normal Cat 5e cable is not UV resistant. UV
resistant cable is available but it is not cheap and you will probably have
to buy far more than you need. Obviously you could put it in conduit.

Just so. Commonly-reported group trick is to use a full-house length of
drainpipe matching what you have already - can be easier to source than
pukka conduit, up which (if 20mm) you'll only get 3, 4 at a pinch, Cat5s.

Stefek