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Subject Author Date
bury conduit Billy Thompson 09-15-2005
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Posted by MC on September 16, 2005, 6:52 pm
induction from close proximity power can induce quite a bit of voltage with
a long run of cable.

300 feet of over head power lines, telephone cable about 3 feet below and
unterminated on each end.
Went to terminate one end after cable was hung, once a got hold of the wire
and touched the metal can that was grounded knowcked me on my ass.



> wrote:
> >Keep the runs separate.
> >And a bare minimum of 1' between the "power" lines and the coax.
> >Induction currents can happen in "dirt".
> Bullshit. The only reason utilities have separation is so they don't
> dig up each other's stuff.




Posted by on September 16, 2005, 10:23 pm

>induction from close proximity power can induce quite a bit of voltage with
>a long run of cable.


That's why they twist communication cable. Common mode noise is
rejected anyway.


Posted by MC on September 17, 2005, 2:00 pm
Yes twisting the the wires can reduce noise, Not the same for inductive
power


> >induction from close proximity power can induce quite a bit of voltage
with
> >a long run of cable.
> That's why they twist communication cable. Common mode noise is
> rejected anyway.




Posted by Tekkie® on September 16, 2005, 10:09 pm
Amun posted for all of us...
I don't top post - see either inline or at bottom.

> Keep the runs separate.
> And a bare minimum of 1' between the "power" lines and the coax.
> Induction currents can happen in "dirt".
>
> Using some type of metallic conduit for at least one of the runs will help
> too
> or even just wrapping them in some tinfoil before you cover them
>
> AMUN
>
Once again ABUM you prove you are an asshole!!
--
My boss said I was dumb and apathetic.
I said I don't know and I don't care...
Tekkie


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