Re: Conduits in a trench

["CWatters" <colin.watters@xxxxxxxxxxxxxxxxxxx>]

"Larry" <invalid@xxxxxxxxxxx> wrote in message
news:w62dnd0mj52OEtTanZ2dnUVZ_t-gnZ2d@xxxxxxxxxxxxxxx
> 42 wrote:
> > I will be having two conduits in a trench. One will be have 4
conductors,
> > 220vac + neutral + ground. The second will have probably 2 cat 5/6 for
phone
> > and possibly HA and a RG6 for cable TV.
> > The trench is 24" wide. If I keep the two conduits on opposite sides of
the
> > trench while backfilling, will the 24" of soil be enough to prevent
> > interference problems. I could dig 2 trenches yards apart, but of course
I'd
> > rather not. The total length is about 125'. They will be 3'-4'
underground.
> > TIA
>
> That should be fine.  I've done the same thing with a 16" trench and
> didn't have any problems.  Cat 5/6 uses balanced pairs which are pretty
> immune to interference.  RG6 is, of course, shielded.  If what you've
> hooked the 240vac up to produces too much interference, you can always
> use shielded cat 5/6 but I doubt you'll have to.
> --
>
> Larry
> rapp at lmr dot com

Should be ok for interefrrence that's directly coupled but bear in mind the
RG6 may form a big loop.

Any high power machinery about?