Re: How to Join Alarm Cables

[Kevin Hawkins <yahoogroupskh@xxxxxxxxxxxxxx>]

I have a similar issue in that I have an existing cable that just
occasionally gives an open circuit tamper fault when we walk over a
certain floor area where the cable is metal stapled to the floor.   It's
a professionally maintained alarm and they have point blank refused to
'join' the cable and instead want to re-run a new length.    I also want
to relocate the panel by about 1m onto a wall instead of the wood
partition it is currently mounted on , (so we can remove the
partition),  again they won't consider extending the cables and there
would be  a lot of cables to re-run.

I don't know if this is a general practice that NACOSS or whatever they
are now called insist on .. or if it's just a 'more money please' ploy
.. anyone know ?     Regardless Jon  I'm interested to see what your
research turns up, and if it's officially acceptable - even better.

K

On 04/11/2010 10:39, JonS wrote:
> I want to create a distribution box for my alarm cables so that I do
not
> have to disturb the main enclosures to make minor changes (Idratek
modules
> have inputs on relay modules).  I need capacity to join about 100
cores
> (i.e. 50 joints) but some are solid other stranded of varying
diameters as I
> have a mix of alarm and Cat5e cable to join. Some are carrying power
(12V)
> others signal.
>
> I've looked at various IDC connection options but am confused by the
choice
> and how to join the cables entering and within the distribution box.
>
> Something like this looks suitable
> http://cpc.farnell.com/jsp/level5/module.jsp?moduleId=cpc/257371.xml
>
> Would I punch down each incoming wire on a separate contact/IDC
connector
> and then jumper between them into the same IDC connector or would the
> jumpers go into an electrically linked connector within the same
block?  I
> think I will be punching the cables directly together as this will
give me
> adequate flexibility - is this a no-no?
>
> For 12V distribution could I put several cores into the same IDC
connector
> or best to use chocolate block for that?
>
> Alarm networks must have this same problem when they are moved /
extended
> but an image search only shows new connectors rather than ones in use,
or
> else are of huge installations where the detail is missing.
>
>
>
> Many thanks
>
> JonS
>
>
>
>
>
>
>
> [Non-text portions of this message have been removed]
>
>
>
> ------------------------------------
>
>
> Yahoo! Groups Links
>
>
>
>



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