rossinyork Posted April 8, 2007 Share Posted April 8, 2007 Hi there all, hope everyones easter has been quiet, ( except for the unfortunate ones on call!! ) Just wondering what other engineers use cable wise when using ducts?, to run Node links to external buildings?. Have tended to use normal 8 core screened cable, but interested what others may use/ have used?. Ross Link to comment Share on other sites More sharing options...
camerabloke Posted April 8, 2007 Share Posted April 8, 2007 we use direct burial cable in ducting. at the minute i have just taken over project management for a big house we have been involved in for about a year. and i jhave told our guys to take all the 8 cores out from the ducting and replace them with appropriate cable due to several problems with the existing Eucam Security Systems 0845 4630 746 www.eucam.co.uk Link to comment Share on other sites More sharing options...
norman Posted April 8, 2007 Share Posted April 8, 2007 Ducting = duct grade cable, 'not normal' 8 core Nothing is foolproof to a sufficiently talented fool. Link to comment Share on other sites More sharing options...
breff Posted April 8, 2007 Share Posted April 8, 2007 We use normal 8 core, always pull in a spare cable and insist that the duct is from inside one building to inside the other to prevent any water ingress The opinions I express are mine and are usually correct! (Except when I'm wrong)(which I'm not) Link to comment Share on other sites More sharing options...
luggsey Posted April 8, 2007 Share Posted April 8, 2007 We use normal 8 core, always pull in a spare cable and insist that the duct is from inside one building to inside the other to prevent any water ingress I find almost all ducts have water in them to some degree and it never dries out. Because of that you need to use duct rated cable which is 100% waterproof and tough enough to have other cables dragged in on top of it. Standard alarm cable will let water in soon enough.... ----------------------------------------------------------------------------------------------------------------------------------- Life is like a box of chocolates, some bugger always gets the nice ones! My Amateur Radio Forum Link to comment Share on other sites More sharing options...
arfur mo Posted April 8, 2007 Share Posted April 8, 2007 hi all, anyone remember a similar thread about water pipe? personally, i always run a decent plastic conduit (i dare not say water pipe here) reason being there may be little in the duct when you install your cables, but other trades or rodents may come in behind you and cause cable damage. the nature of our business means you will only find out about it when its freezing cold and usually about 3 am on a Sunday morning so imo for the cost involved it's not worth arguing about your call obviously, i just make it bullet proof not just future proof regs Alan If you think education is difficult, try being stupid!!!! Link to comment Share on other sites More sharing options...
norman Posted April 9, 2007 Share Posted April 9, 2007 Ducting = duct grade, anything else is bad practice, you will always get water in ducting. Nothing is foolproof to a sufficiently talented fool. Link to comment Share on other sites More sharing options...
arfur mo Posted April 9, 2007 Share Posted April 9, 2007 Ducting = duct grade, anything else is bad practice, you will always get water in ducting. and you always filthy pulling in a new cable too regs alan If you think education is difficult, try being stupid!!!! Link to comment Share on other sites More sharing options...
Monty Posted April 9, 2007 Share Posted April 9, 2007 good 8 core duct cable available from Newey&Eyre 7-2-8C PVC/twbc/PVC pvc braided steel Armour PVC then norm 8 core in side we have used lengths up to 500m but sure you can get longer if req not to expencive www.AllanMoncrieffAlarms.com Link to comment Share on other sites More sharing options...
Guest Sparky169 Posted April 9, 2007 Share Posted April 9, 2007 i have always wondered that how water can get into a duct when its supposedly sealed and the ends come in the building? Link to comment Share on other sites More sharing options...
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