Allso Posted October 28, 2004 Share Posted October 28, 2004 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 Link to comment Share on other sites More sharing options...
Guest Posted October 28, 2004 Share Posted October 28, 2004 to have some spare cores for the case in future.. Link to comment Share on other sites More sharing options...
Brian c Posted October 28, 2004 Share Posted October 28, 2004 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. Link to comment Share on other sites More sharing options...
bellman Posted October 28, 2004 Share Posted October 28, 2004 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. Link to comment Share on other sites More sharing options...
Allso Posted October 28, 2004 Author Share Posted October 28, 2004 Thanks folks for the prompt answers, which were all helpful. Allso Link to comment Share on other sites More sharing options...
bellman Posted October 28, 2004 Share Posted October 28, 2004 Thanks folks for the prompt answers, which were all helpful.Allso 29722[/snapback] At last a topic we could all agree on Regards Bellman Service Engineer and all round nice bloke ) The views above are mine and NOT those of my employer. Link to comment Share on other sites More sharing options...
Monteey Posted October 28, 2004 Share Posted October 28, 2004 At last a topic we could all agree on Indeed, now we can all head back to the slanging matches! 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 Link to comment Share on other sites More sharing options...
bellman Posted October 28, 2004 Share Posted October 28, 2004 Indeed, now we can all head back to the slanging matches! 29735[/snapback] Don't know what you mean Monteey Regards Bellman Service Engineer and all round nice bloke ) The views above are mine and NOT those of my employer. Link to comment Share on other sites More sharing options...
Guest Posted October 29, 2004 Share Posted October 29, 2004 what are you talking about..? i don't get it at all.. Thou it was nice to agree with everyone Link to comment Share on other sites More sharing options...
ian.cant Posted October 29, 2004 Share Posted October 29, 2004 I disagree! I always use 12 core, 2 reasons! 1. Just in case i need spare cores to replace the broken/damaged spare cores. 2. I like tradition and therefore needed to offer a different point of view so we dont all agree. Link to comment Share on other sites More sharing options...
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