Reddwarf4ever 2 Posted August 1 Hello i am burying a PIR cable along the top of the wall, but there are cables from the light switch, will it be ok to run these close ?dont have any option really, but wonder if it could cause false alarms, there won’t be any power flowing at night or when out...but will obviously be live. thanks Quote Share this post Link to post Share on other sites
MrHappy 1,700 Posted August 1 lovely, how many alarm cables are you fitting ? Quote Mr Share this post Link to post Share on other sites
sixwheeledbeast 476 Posted August 1 If your going by the regs:- 50mm separation between all ELV and LV cabling. "Additional insulation should be provided" if they need to cross over each other, preferably perpendicular to minimise any interference. Seems a fair bit of mess for one alarm cable? Would have looked at going upwards or if really required a thin chase into the cove, disappears with cork. Quote Share this post Link to post Share on other sites
MrHappy 1,700 Posted August 1 Just now, sixwheeledbeast said: Seems a fair bit of mess for one alarm cable? . Looking at the picture, he must have a very understanding wife or lives alone.... 2 Quote Mr Share this post Link to post Share on other sites
al-yeti 519 Posted August 1 2 hours ago, Reddwarf4ever said: Hello i am burying a PIR cable along the top of the wall, but there are cables from the light switch, will it be ok to run these close ?dont have any option really, but wonder if it could cause false alarms, there won’t be any power flowing at night or when out...but will obviously be live. thanks As said above , what's above ? Carpet? Cables look so close to the surface doesn't look as if you will get.much filler on top either Other option break more plaster below and go behind them a little , is it an outside wall ? Or internal , old internal breeze block? Although messing with the coving is an option you get it wrong it will be messy and always noticeable Quote Share this post Link to post Share on other sites
PeterJames 681 Posted August 1 4 hours ago, al-yeti said: Cables look so close to the surface doesn't look as if you will get.much filler on top either He will strip them back to the indivual cores first silly Quote Share this post Link to post Share on other sites
al-yeti 519 Posted August 1 45 minutes ago, PeterJames said: He will strip them back to the indivual cores first silly Ah so you mean strip of jacket of cable Flatten cores out and use Wickes 60min silicon to form into a ribbon cable spot Nsí tricks are so cool ..... Quote Share this post Link to post Share on other sites
james.wilson 728 Posted August 1 Running perpendicular won't be an issue, as noted you need seperation too. But I don't see that in the pic? Would it not of been easier and better to be under the floor above? Quote securitywarehouse https://www.securitywarehouse.co.uk Trade Members please contact us for your TSI vetted trade discount. Share this post Link to post Share on other sites
Reddwarf4ever 2 Posted August 1 Not possible I am afraid, the alarm cable ,is 6 core Think only two,used for the PIR and it is the highest quality I could get so screening should be good.......suppose it’s fingers crossed than Quote Share this post Link to post Share on other sites
james.wilson 728 Posted August 1 To a point wire is wire but unless your running the lighting in it I'm a little lost? Quote securitywarehouse https://www.securitywarehouse.co.uk Trade Members please contact us for your TSI vetted trade discount. Share this post Link to post Share on other sites
MrHappy 1,700 Posted August 1 1 hour ago, Reddwarf4ever said: Not possible I am afraid, the alarm cable ,is 6 core Think only two,used for the PIR and it is the highest quality I could get so screening should be good.......suppose it’s fingers crossed than would it not been easier to make a few BFO holes in the coving shove the wire to the next BFO in the coving, rather than butcher the wall ? 1/2 a bag should sort your work- but I understand its still hard to get hold of? Quote Mr Share this post Link to post Share on other sites
Reddwarf4ever 2 Posted August 1 The coving isn’t continuous, that’s the first idea I had, the installer used gripfill at intervals to stick it, so can’t do that.....a neat chisel along the wall should suffice, just hoped that interference wouldn’t be a problem Quote Share this post Link to post Share on other sites
al-yeti 519 Posted August 1 12 minutes ago, MrHappy said: would it not been easier to make a few BFO holes in the coving shove the wire to the next BFO in the coving, rather than butcher the wall ? 1/2 a bag should sort your work- but I understand its still hard to get hold of? Half a bag/? Lol that will do the whole wall Quote Share this post Link to post Share on other sites
Reddwarf4ever 2 Posted August 2 Don’t think I am being ungrateful, but I had already cut the channel for the cable, having decided this was the best route, all I really wanted to know was the likelihood of mains interference causing spurious alarms, as the alarm cable is shielded. Wasn’t really looking for different ways to route the cable......thanks Quote Share this post Link to post Share on other sites
MrHappy 1,700 Posted August 2 30 minutes ago, Reddwarf4ever said: but I had already cut the channel for the cable, having decided this was the best route, looking at your work.... I would recommend a wire free alarm on your next job. 30 minutes ago, Reddwarf4ever said: the likelihood of mains interference causing spurious alarms I assume very low, Quote Mr Share this post Link to post Share on other sites
