Mouser.com sells small air/moisture vents bade by Bud Industries for this
purpose.Chuck K9LC
-------- Original message --------From: Shawn Donley <n3ae@comcast.net> Date:
10/16/23 2:00 PM (GMT-06:00) To: towertalk@contesting.com Subject:
[TowerTalk] Condensation Inside Tower Cable Box Hello fellow TowerTalkers, I
have an aluminum outdoor electrical enclosure at the base of my tower. My
underground runs of hardline enter the box through a PVC conduit elbow entering
at the bottom of the enclosure. The tower coax and rotor cables exit the
bottom as well. In humid weather, especially this time of year when the
temperature goes down at night, I get a significant amount of condensation
inside the enclosure, not only on the enclosure but on the outside of the
cables within it. Enough water to make one think there's no environmental
protection provided by the enclosure in the first place. I suspect the moist
air from the conduit is the source since the underground run uses slotted
corrugated drain pipe covered with a soil sock rather than solid wall PVC.
Why ... concerns of long term condensation inside solid conduit...another
subject thoroughly discussed elsewhere and hopefully not again on this thread.
Has anyone experienced something similar and has a proven fix? I considered a
small 12v box fan to circulate some outside air through the enclosure but I
think the cold box walls would just condense that moist air as well. Perhaps a
low wattage 12v light bulb inside the enclosure to provide some heat to keep
the walls warmer? Some water pipe heat tape on the outside of the box (but I
would like to avoid any 125vac solution)? Sealing the entry conduit is
problematic with the several cables of different diameters. I would not want
to "foam" the conduit with expanding foam or something like that which would
make pulling a new cable much more difficult. tnxN3AE
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