I've found enough residual moisture or condensation in buried conduits
that it helped the removal of lots of LDF4 and LDF5 Heliax. Or run some
water thru the conduit. There is also pull lubricant with TFE additives.
A practical choice for 120v power is to drop a UF cable in the same
trench below the conduit to give it protection from digging. However, I
think formal code compliance requires vertical separation low voltage
(12" deep ok) vs AC power PVC conduits 18" deep)
http://www.dslreports.com/forum/r20505456-What-is-the-NEC-code-for-low-voltage-cable-burial
I've also learned the hard way that the edge of PVC conduit can easily
strip the coax insulation where feeding it in. Best to glue an end bell
on the ends.
https://www.google.com/search?q=pvc+conduit+end+bell&tbm=isch&source=iu&ictx=1&fir=i3JXNu1_g0OzeM%253A%252CkvgjHlN6OlDZzM%252C_&usg=__yH6-LVbtL3J1I4YrC9c29Z0NS9I%3D&sa=X&ved=0ahUKEwj2r_XIqfzYAhVH4WMKHXjmCNkQ9QEIYzAD#imgrc=i3JXNu1_g0OzeM:
Grant KZ1W
On 1/28/2018 16:26 PM, Jim Brown wrote:
On 1/28/2018 10:21 AM, Mickey Baker wrote:
Pulling House AC power through conduit likely subjects you to code
requirements, like burial of at least 18 inches. If this is not “house
power” you should be good.
In general, mains power wiring MUST be in its own conduit, separate
from non-power wiring (generally called "low voltage wiring". In other
words, if you need to run mains power and coax/control cables to your
tower in conduit, you must have two conduit runs, one for power and
one for RF and rotator.
I don't have much experience pulling cable into conduit, but I've
heard that some (all?) pulling juice can turn into glue as it dries.
I'd get advice from electricians who do this all the time on this
before using any pulling lubricant.
73, Jim K9YC
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|