Mixing high voltage (above 30 volts) and low voltage
(the RS-232) in the same conduit is also against the NEC -
National Electrical Code, which you should be meeting for
any public facility. They should run in separate conduits.
If a new conduit isn't practical, try wireless.
www.maxstream.net has a wireless RS-232 modem that I have
had very good results with over distances around 1000 ft.
They can go much further (many miles) with better antennas.
These cost about $250 each and you'll need two of them.

-Shay


> John Mahony wrote:

> > I'd like to run it through the same conduit
> > as the power.
>
> It is not a good idea from the safety standpoint. If you
> get a nick in
> both of the cables you could wind up with 110 volts
> through one of the
> RS-232 lines. RS-232 is robust but not _that_ robust
> <g>.
>
> Now, as long as both of the cables are unbroken then it
> would work. But
> for a public facility I would personally consider another
> option.
>
> Gene Horr
>


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