[TowerTalk] Pulling coax through PVC pipe

Grant Saviers grants2 at pacbell.net
Sun Jan 28 23:28:51 EST 2018

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)

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.

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
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