ToughButterCup Posted July 16, 2019 Share Posted July 16, 2019 Just starting to put our cable runs in....? 'Nother adventure ahead. 10mm cable is beefy innit? Never seen any til today. Well any'ow, does it need to be clipped to the bottom chord (top of) of each POSI? Thanks.... Ian Link to comment Share on other sites More sharing options...
bassanclan Posted July 16, 2019 Share Posted July 16, 2019 Minimum of 50mm from the bottom (to prevent someone putting a screw into it from the celing below) 1 Link to comment Share on other sites More sharing options...
ToughButterCup Posted July 16, 2019 Author Share Posted July 16, 2019 There's a false ceiling going under these POSIs, so that should be fine. Thanks! Link to comment Share on other sites More sharing options...
Russell griffiths Posted July 16, 2019 Share Posted July 16, 2019 And while your at it go and buy some shorter nails for you nail gun. ?? 1 Link to comment Share on other sites More sharing options...
Gone West Posted July 16, 2019 Share Posted July 16, 2019 Ran ours through conduit which we cable tied to the metal webs. Link to comment Share on other sites More sharing options...
ToughButterCup Posted July 16, 2019 Author Share Posted July 16, 2019 8 minutes ago, Russell griffiths said: And while your at it go and buy some shorter nails for you nail gun. ?? Eeeeeeeewwwww, ? Link to comment Share on other sites More sharing options...
Carrerahill Posted July 16, 2019 Share Posted July 16, 2019 (edited) 33 minutes ago, AnonymousBosch said: Just starting to put our cable runs in....? 'Nother adventure ahead. 10mm cable is beefy innit? Never seen any til today. Well any'ow, does it need to be clipped to the bottom chord (top of) of each POSI? Thanks.... Ian This might help you in your adventure: 522.6.201 A cable installed under a floor or above a ceiling shall be run in such a position that it is not liable tobe damaged by contact with the floor or ceiling or their fixings.A cable passing through a joist within a floor or ceiling construction or through a ceiling support (e.g. underfloorboards), shall:(i) be installed at least 50 mm measured vertically from the top, or bottom as appropriate, of the joist or batten,or(ii) comply with Regulation 522.6.204.522.6.202 A cable installed in a wall or partition at a depth of less than 50 mm from a surface of the wall orpartition shall:(i) be installed in a zone within 150 mm from the top of the wall or partition or within 150 mm of an angle formedby two adjoining walls or partitions. Where the cable is connected to a point, accessory or switchgear on anysurface of the wall or partition, the cable may be installed in a zone either horizontally or vertically, to thepoint, accessory or switchgear. Where the location of the accessory, point or switchgear can be determinedfrom the reverse side, a zone formed on one side of a wall of 100 mm thickness or less or partition of100 mm thickness or less extends to the reverse side, or(ii) comply with Regulation 522.6.204.Where indent (i) but not indent (ii) applies, the cable shall be provided with additional protection by means of anRCD having the characteristics specified in Regulation 415.1.1.140522.6.203 Irrespective of its buried depth, a cable concealed in a wall or partition, the internal construction ofwhich includes metallic parts, other than metallic fixings such as nails, screws and the like, shall:(i) be provided with additional protection by means of an RCD having the characteristics specified in Regulation415.1.1, or(ii) comply with Regulation 522.6.204.For a cable installed at a depth of less than 50 mm from the surface of a wall or partition the requirements ofRegulation 522.6.202(i) shall also apply. As for the reference to 522.6.204 - that basically means earthed runs, so twin and earth cable etc. earthed conduit, protected from damage (this applies to where damage is likely). Edited July 16, 2019 by Carrerahill Link to comment Share on other sites More sharing options...
Carrerahill Posted July 16, 2019 Share Posted July 16, 2019 8 minutes ago, Russell griffiths said: And while your at it go and buy some shorter nails for you nail gun. ?? Which look like Fischer smooth galv?!? Link to comment Share on other sites More sharing options...
ToughButterCup Posted July 16, 2019 Author Share Posted July 16, 2019 4 minutes ago, Carrerahill said: This might help you in your adventure: 522.6.201 A cable installed under a floor or above a ceiling shall be run in such a position that it is not liable tobe damaged by contact with the floor or ceiling or their fixings.A cable passing through a joist within a floor or ceiling construction or through a ceiling support (e.g. underfloorboards), shall:(i) be installed at least 50 mm measured vertically from the top, or bottom as appropriate, of the joist or batten,or(ii) comply with Regulation 522.6.204.522.6.202 A cable installed in a wall or partition at a depth of less than 50 mm from a surface of the wall orpartition shall:(i) be installed in a zone within 150 mm from the top of the wall or partition or within 150 mm of an angle formedby two adjoining walls or partitions. Where the cable is connected to a point, accessory or switchgear on anysurface of the wall or partition, the cable may be installed in a zone either horizontally or vertically, to thepoint, accessory or switchgear. Where the location of the accessory, point or switchgear can be determinedfrom the reverse side, a zone formed on one side of a wall of 100 mm thickness or less or partition of100 mm thickness or less extends to the reverse side, or(ii) comply with Regulation 522.6.204.Where indent (i) but not indent (ii) applies, the cable shall be provided with additional protection by means of anRCD having the characteristics specified in Regulation 415.1.1.140522.6.203 Irrespective of its buried depth, a cable concealed in a wall or partition, the internal construction ofwhich includes metallic parts, other than metallic fixings such as nails, screws and the like, shall:(i) be provided with additional protection by means of an RCD having the characteristics specified in Regulation415.1.1, or(ii) comply with Regulation 522.6.204.For a cable installed at a depth of less than 50 mm from the surface of a wall or partition the requirements ofRegulation 522.6.202(i) shall also apply. As for the reference to 522.6.204 - that basically means earthed runs, so twin and earth cable etc. earthed conduit, protected from damage (this applies to where damage is likely. ? Link to comment Share on other sites More sharing options...
ToughButterCup Posted July 16, 2019 Author Share Posted July 16, 2019 4 minutes ago, Carrerahill said: Which look like Fischer smooth galv?!? Whatever was on the floor when I picked them up and gave them to someone who knew what he was doing ? 1 Link to comment Share on other sites More sharing options...
redtop Posted July 16, 2019 Share Posted July 16, 2019 plastic tie them to the metal web so they run at mid-depth in the joist. easiest solution 1 Link to comment Share on other sites More sharing options...
ToughButterCup Posted July 17, 2019 Author Share Posted July 17, 2019 Thanks @redtop. Simplicity is where it's at (man) Link to comment Share on other sites More sharing options...
joe90 Posted July 17, 2019 Share Posted July 17, 2019 Are you installing sound insulation above the ceiling?, might be best above that to keep it ventilated. Link to comment Share on other sites More sharing options...
ProDave Posted July 17, 2019 Share Posted July 17, 2019 12 hours ago, redtop said: plastic tie them to the metal web so they run at mid-depth in the joist. easiest solution No. A lot of the webs have nasty sharp edges where they are stamped out. If you must tie them to the web, then wrap that bit of the web with some pipe insulation or similar first to cover the sharp edges. Link to comment Share on other sites More sharing options...
redtop Posted July 17, 2019 Share Posted July 17, 2019 sorry i meant loosely cable tie so the weight of the cable means it hangs halfway down the joist Link to comment Share on other sites More sharing options...
ToughButterCup Posted July 19, 2019 Author Share Posted July 19, 2019 On 17/07/2019 at 09:56, ProDave said: No. A lot of the webs have nasty sharp edges where they are stamped out. [...] Hmmm, cut myself on a web the other day: you have a point. So how would you (do you) do it then Dave Link to comment Share on other sites More sharing options...
ProDave Posted July 19, 2019 Share Posted July 19, 2019 21 minutes ago, AnonymousBosch said: Hmmm, cut myself on a web the other day: you have a point. So how would you (do you) do it then Dave Wrap and cable tie an offcut of pipe insulation around that leg of the web, and cable tie the cable to that pipe insulation. 1 Link to comment Share on other sites More sharing options...
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