On 9/30/2015 7:20 AM, Bob F wrote:
Don Y wrote:
On 9/30/2015 6:23 AM, (PeteCresswell) wrote:
Got two conduits going out to the garden shed: one for AC, the other
for Ethernet.

Now I want to run coax for a TV antenna out there so that I can mount
the antenna on the wall of the garden shed and route the signal back
to the house (making it basically trivial to make adjustments to the
antenna - as opposed to having to climb up on to the roof of the
house). Which conduit would you choose to share the coax with: AC or
Ethernet?

IIRC, AC and COAX are supposed to be separated by 2 inches.

Ethernet is also a potential problem due to exposure to lightning
strikes. Consider running optical fiber to bridge buildings. Or,
protect the ethernet drop accordingly.

Should anything except direct lightning strikes be a problem if the shed ground
is through the AC line from the house panel? A grounding rod at the shed would
probably not be a good idea.

Ground is never ground. A nearby lightning strike can have "ground"
bounce, considerably. Note that there is a huge magnetic event
("EMP") associated with a lightning strike. This "induces" voltages in
conductors -- even buried ones!

Note that these "disturbances" can follow conductors into equipment
attached at both ends.

I've arranged for each of the network drops, here, that is accessible
"on the outside of the house" (though still part of this same building)
to have protection from lightning -- as well as tampering/vandalism
(e.g., you wouldn't want someone to "do something" to an accessible
ethernet drop and take down some/all of your network infrastructure
because they were of a hostile intent!