what is the best wire for a perimeter alarm

[Crash Gordon]

Both ways. Short runs we pulled it out and just used sheath, longer runs we
used it as it...ran to jboxes then 22/4 to switches...like that. Everything
above dropped ceiling has to be supported every 3' and in conduit, but they
accepted us using supported BX. What a pain working up there. All ceiling
grid had to be supported at all 4 corner and cross tied up as well...try and
pop a tile out up there...sheesh. Anyway it was better than running conduit.



--
Crash Gordon
-------ouch------

<I feel like I'm diagonally parked in a parallel universe>
| Its pretty difficult to remove the cable from BX especially if its of any
| length.
|
| Doug
|
| --
|
| | > Buggs wrote:
| >> Crash Gordon wrote:
| >>> I have used BX for security systems up in Vegas. Their codes are a
| >>> pain in the ass and it's actually easier to use BX then running
| >>> conduit.
| >>
| >> BX for what exactly? What gauges? Sounds like a real PITA.
| >> js
| >
| > Pretty sure he's talking about just using the BX as sheathing and
running
| > the alarm wiring inside of it...
|
|

 

[Crash Gordon]

Gopher-proof wire's the only way to go.



--
Crash Gordon
-------ouch------

<I feel like I'm diagonally parked in a parallel universe>
| 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
|
|
| Next you'll be telling him to wire up his keypads with CAT 5E...
| Shielded wire... sheesh! We've got alarm systems installed in homes
| where the customer's are running ham radios. I've not had a single
| false alarm that's related to "radio interference". About the only
| "interference" I get these days is from young punks driving around with
| bass speakers the size of garbage can lids playing something they call
| "tunes" at a volume level that's gotta be close to 140 dB. You can
| actually *feel* them coming from a block away. To top it off, when they
| stop next to you they'll invariably be talking on their cell phones
| although God knows how the heck the person on the other end can even
| hear what they're saying.

 

[Buggs]

Both ways. Short runs we pulled it out and just used sheath, longer
runs we used it as it...ran to jboxes then 22/4 to switches...like
that. Everything above dropped ceiling has to be supported every 3'
and in conduit, but they accepted us using supported BX. What a pain
working up there. All ceiling grid had to be supported at all 4
corner and cross tied up as well...try and pop a tile out up
there...sheesh. Anyway it was better than running conduit.

Trying to picture that. Seems kinda funky. Oh well, better you than me.
js

 

[Bob La Londe]

Gopher-proof wire's the only way to go.

No. Not gopher proof wire. Anything but gopher proof.

 

[Bill]

Shielded wiring yes/no....
Well years ago I was able to see the difference between the old "relay"
systems and the new (at the time) transistor/IC systems. The transistor/IC
systems had problems the relay systems never had.

Lightning storms would cause all sorts of false alarms or would damage the
control.

Systems near radio station transmitters would have all sorts of problems.

Enormous warehouse buildings with miles of wiring had weird problems.

Installing shielded wiring or installing the wiring in metal conduit solved
these problems.

 

[Crash Gordon]

ok... double stranded barbed wire then



--
Crash Gordon
-------ouch------

<I feel like I'm diagonally parked in a parallel universe>
|
| | > Gopher-proof wire's the only way to go.
|
| No. Not gopher proof wire. Anything but gopher proof.
|
|
|
|
| --
|
|

 

[Robt]

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.

 

[Bill]

"Sue" wrote in message

My brother-in-law, who is an electrical engineer, would wake up from a nap
in his easy chair and walk to the kitchen thru the beam of his PIR only to
have his alarm start wailing. "Wait", he said to himself, "I didn't arm
the system!" After this happened several times, he began to wonder, what
in the heck is going on that could arm my alarm? One evening immediately
after this happened, he mosied outdoors, and lo and behold he could hear
his neighbor talking on his ham radio. Said neighbor had antennas all
over the outside of his house. Ron had not used shielded wire for his
alarm system. He re-wired that weekend, and problem was solved.

I had a problem with a TV remote extender not working (Operate the TV remote
from another room). So I enclosed the transmitter in a metal box, receiver
in another metal box (Faraday cages), leaving small holes for the light to
go through, then connected a shielded coax cable between them. Then it
worked just fine.

The receiver had a light which indicated it was receiving a signal from the
transmitter. Well this light was going almost constantly even though the
transmitter was off! And this was jamming the real signals so the extender
could not work. After I shielded everything (from external RF), the light on
the receiver stayed dark unless the transmitter was activated.

Anyway lots of RF around - at least where I live...

 

[Jim]

Must be a different building code where you are. Any commercial job here
gets thin wall, or Greenfield etc. I've yet to see a rodent get through any
type of EMT. But where you are on the waterfront perhaps something from
20,000 leagues could come up and get you.

This was 20 or possibly more years ago and the wiring in the bulding
was done some years before that. Certainly wouldn't pass now. And in
places like that, who knows, wiring may have been done by a DIY'er or
somebody got paid off.

 

[Jim]

"Sue" wrote in message

I had a problem with a TV remote extender not working (Operate the TV remote
from another room). So I enclosed the transmitter in a metal box, receiver
in another metal box (Faraday cages), leaving small holes for the light to
go through, then connected a shielded coax cable between them. Then it
worked just fine.

The receiver had a light which indicated it was receiving a signal from the
transmitter. Well this light was going almost constantly even though the
transmitter was off! And this was jamming the real signals so the extender
could not work. After I shielded everything (from external RF), the light on
the receiver stayed dark unless the transmitter was activated.

Anyway lots of RF around - at least where I live...

If you have an RF problem, then it may (meaning maybe) be addressed
with shielded wire. But there are other solutions that might work that
would be much simpler to impliment.


The point that is trying to be made regarding shieled wire is that it
may solve specific problems. However, if used indiscriminately , it
can cause problems. Even when called for, it can cause other problems
that have to be addressed, in addtion to the original problem. If a
mfg has specific requirements to use shielded wire from feed back from
the field or by design, they'll certainly tell you to use it.
Otherwise, if not recommended, the overwhelming odds in favor of NOT
having a problems is the best way to proceed.

Use what the manufacturer recommends and if you have a problem,
address the specific problem and if it calls for a shield or a choke
or a capacitor ..... try what ever is recommended until the problem is
solved. If you start out with solutions to problems that don't exits,
you'll greatly increase the possiblity of creating issues that
wouldn't have existed had you followed the mfg's recommedations.

Whew!

 

[Tommy]

If you have an RF problem, then it may (meaning maybe) be addressed
with shielded wire. But there are other solutions that might work that
would be much simpler to impliment.


The point that is trying to be made regarding shieled wire is that it
may solve specific problems. However, if used indiscriminately , it
can cause problems. Even when called for, it can cause other problems
that have to be addressed, in addtion to the original problem. If a
mfg has specific requirements to use shielded wire from feed back from
the field or by design, they'll certainly tell you to use it.
Otherwise, if not recommended, the overwhelming odds in favor of NOT
having a problems is the best way to proceed.

Use what the manufacturer recommends and if you have a problem,
address the specific problem and if it calls for a shield or a choke
or a capacitor ..... try what ever is recommended until the problem is
solved. If you start out with solutions to problems that don't exits,
you'll greatly increase the possiblity of creating issues that
wouldn't have existed had you followed the mfg's recommedations.

Whew!

Gee,
That was a long post for you. is roland rubbing off on you?

 

[Tommy]

Gee,
That was a long post for you. is roland rubbing off on you?

Was a good reply though.

 

[Buggs]

That was a long post for you. is roland rubbing off on you?

Aw, JEEEEZ!
Thanks for THAT visual.
js

 

[Jim]

Gee,
That was a long post for you. is roland rubbing off on you?-

Well ...... I don't acutally know Roland, but the thought of him
rubbing off on me .....or anyone, is rather a repulsive thought. ( no
reflection on Roland, mind you) But the thought is especially icky,
and rather grotesque when preceded with the sentence "That was a long
post for you"

I'd suggest that you keep your fantasies to yourself.

 

[Jim]

The newspapers are after me. I wasn't rubbing, I was tying my shoe laces.
Just because I had KY and a condom, you can prove anything ever happened. I
am not now gay and I have never been gay. Is it still too late to get my old
Senate job back?

Yeah but I bet you were thinking about being gay in the future
though.

Just as soon as you get those damn .... under the stall ... signals
right.
Practice ... practice .... practice.

 

[Tommy]

Well ...... I don't acutally know Roland, but the thought of him
rubbing off on me .....or anyone, is rather a repulsive thought. ( no
reflection on Roland, mind you) But the thought is especially icky,
and rather grotesque when preceded with the sentence "That was a long
post for you"

I'd suggest that you keep your fantasies to yourself.

Euwww!!

THAT is not what i meant! (Shudder) no one needs that visual.


Not my fantasies, Mine involve large breasted females.

 

[Jim]

Euwww!!

THAT is not what i meant! (Shudder) no one needs that visual.

Not my fantasies, Mine involve large breasted females.

Hey ..... maybe we should join forces.

I've been on a life long quest to find the perfect pair. Ya know .....
everytime I think I've found them ..... I still have to look at the
next pair.

Hey ..... ya never know!

I've developed some pretty good manuvers to watch, without my wife
catching on ..... too! On the beach, book on my lap, head tilted
down, eyes looking out the top of my sunglasses ..... etc. Looking
along the beach for a picture to take, through the telephoto lens of
the camera.

On the other hand, she's probably on to me ..... and just doesn't
object anymore.

 

[Robert L Bass]

Is that why you were banned from all the local dairies? When you
said you liked four on the floor, everyone thought you were talking
about cars!

Reminds me of the line in the movie, "Witness," where the Amish
farmer asks Harrison Ford, "What's the matter . . . haven't you ever
handled a tit before?"

Ford says, "Sure, just never this big."

--

Regards,
Robert L Bass

=============================>
Bass Home Electronics
941-925-8650
4883 Fallcrest Circle
Sarasota · Florida · 34233
http://www.bassburglaralarms.com
=============================>

 

[Frank Olson]

Jim wrote:

Hey ..... maybe we should join forces.

I've been on a life long quest to find the perfect pair. Ya know .....
everytime I think I've found them ..... I still have to look at the
next pair.

Hey ..... ya never know!

I've developed some pretty good manuvers to watch, without my wife
catching on ..... too! On the beach, book on my lap, head tilted
down, eyes looking out the top of my sunglasses ..... etc. Looking
along the beach for a picture to take, through the telephoto lens of
the camera.

On the other hand, she's probably on to me ..... and just doesn't
object anymore.

The drool on your chin probably gives you away every time...

 

[Frank Olson]

What if the drool came from the bottom up and not the top down, and it just
looked like drool?

You're weird.