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Why 8 core?

Allso
in General Security & Fire Queries

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Hi, Could someone explain, relatively simply if possible, why I have seen postings recommending that new wiring is put in as 8 core?

As far I can understand (bearing in mind I'm a newbie), many modern systems need only 2 cores for detectors (using EOL resistors), and 4 cores for PIRs (2 extra for the power supply). Older wiring systems wouldn't need more than 6 cores in total.

Allso
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For the future. :)

There may be a cable fault and you can use the spare cores.

There may be an addition to be made, again, you can use the spare cores.

There may be a time when the system needs upgrading. The new system may be wired differently or need the spare cores for something else.

If you don't know......ask.
Hi, Could someone explain, relatively simply if possible, why I have seen postings recommending that new wiring is put in as 8 core?

As far I can understand (bearing in mind I'm a newbie), many modern systems need only 2 cores for detectors (using EOL resistors), and 4 cores for PIRs (2 extra for the power supply). Older wiring systems wouldn't need more than 6 cores in total.

Allso

29711[/snapback]

Hi Allso,

Several reasons for doing this, most common one is to allow spare cores in case anything get's damaged / shorted. also it allows an easy "Tag" into the system for expansion for example.

Regards

Bellman

Service Engineer and all round nice bloke :-)

The views above are mine and NOT those of my employer.
Thanks folks for the prompt answers, which were all helpful.

Allso

29722[/snapback]

At last a topic we could all agree on :lol:

Regards

Bellman

Service Engineer and all round nice bloke :-)

The views above are mine and NOT those of my employer.
At last a topic we could all agree on 

Indeed, now we can all head back to the slanging matches!

:lol:

Mark Hawks

Ex BT Openreach Field Service

Now Self employed telecom and data engineer  www.mphtelecom.co.uk 

Also back doing sub contract work in the security industry.

Retained firefighter Devon and Somerset Fire and Rescue

Indeed, now we can all head back to the slanging matches!

:lol:

29735[/snapback]

Don't know what you mean Monteey :whistle:

Regards

Bellman

Service Engineer and all round nice bloke :-)

The views above are mine and NOT those of my employer.

I disagree!

I always use 12 core, 2 reasons!

1. Just in case i need spare cores to replace the broken/damaged spare cores. :D

2. I like tradition and therefore needed to offer a different point of view so we dont all agree. :wacko:

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