Re: what is the best wire for a perimeter alarm

[Robt <sp@xxxxxx>]

Bill wrote:
> If you want the *best* wire... In addition to what others said, note that
> all that wiring running in the walls/attic of a house acts as a big
> "antenna".
>
> The wiring can get voltage running in it induced by nearby radio
> transmitters, etc. and lightning strikes - causing false alarms sometimes.
>
> If you use "shielded" wire and ground one end of the shield (at the main
> box), this will keep the outside electrical interference out of the wiring.
>
> Shielded wire is like TV coax wire which has a metal wrap inside the jacket.
> But you can get regular 2, 4, [or whatever] conductor shielded wire. It is
> expensive though.
>
> More about this - Faraday Cage...
> http://en.wikipedia.org/wiki/Faraday_Cage
>
>
>
> "Bob in Phx"  wrote in message
>> thinking of wiring a new house and would like to know what kind of wire to
>> run. cat 3, cat5, cat6 something else???????
>> it will be in the walls, not in air spaces, 2 zone alarm with NC switches
>> all in parallel.,
>>
>> thanks in advance....
>>
>
>
20- 30 years ago, yes.  now a days just use twisted conductors to defeat
inductance and emi.