so in this video presentation we're going to look at the Linian Superclip the clip designed
to support PVC PVC twin and CPC cable twin and earth cable in order to prevent it collapsing in
the event of a fire we know under the 18th edition wiring regulations that all surface wiring systems
need to be supported in order to prevent premature collapsing in the event of a fire let's cut now to
that regulation so then Marcus what does BS7671 say about the requirements for prevention of
premature collapsing of the warring system okay guys so in chapter 52 and the regulation 521.10.2
which you can see on the screen it states that warren systems shall be supported such that they
will not be liable to premature collapse in the event of a fire and this comes along with some
different notes as well it gives us a bit more guidance on what this regulation is talking about
so the first note wiring systems hanging across access routes talking about any point where you
may enter or exit a building so that's not just doors it could be across windows yeah it could be
yeah definitely note two cables installed in or on steel cable containment systems maybe cable basket
things like that okay they will already meet with the requirements okay this regulation because the
metallic structure of the support is in place anyhow also note 3 this regulation precludes
for example the use of non-metallic cable clips or cable ties as the sole means of support so Marcus
we're not suggesting that every single wiring system that's now installed is going to have to
have a metallic fixing metallic saddle metallic tie are we no gas definitely not later on in note
3 it goes on to talk about the need for surface wiring systems to be supported so are we talking
about perhaps a mini trunking on a wall well we're talking about maybe twin and CPC cables that
are clipped to the fabric of the building on the surface are we suggesting they're going to have to
have some sort of metallic fixing yeah definitely and also maybe PVC conduit drops and things like
that however guys not every single one of them supports for the surface wiring system will need
to be of a metallic material from note 4 we can take that they only need to be suitably spaced on
the installation itself thanks for clarifying that Marcus so we now know that it isn't every single
fixing on a surface wiring system that has to be non-combustible in other words metallic so Marcus
to finish this off the BS7671 give us any guidance on the distance between these non-combustible
supports no unfortunately it doesn't Gary so it's actually down to the individual to deem what they
believe is suitable for that installation and what is going to actually prevent that one system
becoming a problem in the event of less air fire okay thank you so we can see how important it is
to support our surface wiring system in order to prevent premature collapsing in previous
video presentations we looked at supporting mini trunkings and PVC conduits today we're going to
concentrate on supporting twin and earth cables i've set up behind the camera a rig in order that
we can support PVC cables when we're having to drill into a wooden joist using the Superclip
as well as into a block wall let's go there next okay so we've been waiting for him to arrive and
we lad so we've got the linen fire clips okay for twin and nerf cables we know we're going to call
it PVC PVC twin and CPC cables we've got the twin enough clips for one mil and we're going to show
you how easy it is to fit these we're going to do it in wood and then i'll go over and do it into a
block wall as well so let's do those we've passed them around we've seen the construction
of them we see the sharp bits they are sharp as well and then when you get them around there
call those barbs almost like barbed wire in it it goes in and grips so we've got to drill
ourselves a six mil hole okay so i'm gonna drill myself a six mil hole approximately just there
not a hammer
okay so drill a six mil hole take our clip just drag it a little bit fully for the camera okay
and this is the only the only bit that's mildly tricky because i'm not used to it so
that's how tricky that was you know so as if that was tricky so i've just wrapped it around
the actual cable itself i squeeze it up so just be careful your fingers squeeze it all the way up
and then push into the hole like so
that's how difficult they are to fit okay
so there must be uselessness now i bet
they'll pull straight out i'll be able to easily pull that out
yeah that goes there goes yeah yeah does that look like that's gripping my nine stone weight
yeah that is properly held in you can see from the arm can you i was pulling on that
in a minute we'll let one or two of you pull that off camera that's held fully in place really good
let's go look at it do it on a block wall next okay so we'll be on the camera we'll see how
easy it was to go into a joist so that's fair enough but we're going to do it into a breeze
block as well so let's see how it is on a breeze block i've got it i've set it back oh no i haven't
set it to hammer this time and we've got a six mil uh masonry drill bit so just pick a hole
okay
so yourself another linear fire clip okay so around the conductors
i'm going to dress it all the way down the wall just show the process
again be careful your fingers squeeze it up as tight as you can push into the hole
there we go and then it goes and then we've held it in position
there's only one test you need now is the Gary lean back test
my feet off the ground am i nine stone no one's doing four then okay and i'm leaning back on that
incredible really difficult to fit that i can see why nobody wants to fit them because
of the time it takes in order to do it okay we discussed it at length and we were happy
with that without pulling that arm okay in order that we got it to fix we love them