in this video we're going to look at taking a three core cable from an already wired ceiling
rose and pendant or batten lamp holder and this works nicely if you wanted to say wire to an
extractor fan in a bathroom you put a three core from the light point to an isolator and then to
the extractor fan or it could be that you want to continue on the lighting circuit as well as having
another light come on at the same time so it might be that this is in say I don't know hallway where
you have the first light come on and the second light come on together but the second light is
closer to another area so you want to carry on your three plate method so by using the three
core you can take the permanent line on as well so it works in both ways in the first video in this
series we looked at connecting up our ceiling rose and pendant and making a nice neat layout
we then look to add in a cable so we could take a feed to say another area maybe we're wiring a
loft light another light or an outside light in a different area and then the video after that
we looked at bringing the lighting circuit on at the same time so we had this one and another light
coming on at the same time but we didn't continue the permanent line through that we were with this
one so I've introduced here my three core and CPC cable and unlike previous ones there's no point
twisting it around to get it in the perfect place we're just gonna have to live with it
because always a conductor will be in the wrong place so from this we want the permanent line the
neutral CPC and the switching line connection to come from here say to a fan isolator or to
another light in the area that's going to come on at the same time it works for both
so let's pull this one out and strip it back using the twin and earth strippers I've used
them in all the videos now for these ones and we just pulled that off and we've got our conductors
now this is the bit that's important he's thinking about what you're going to use for what well the
permanent line is going to be brown that's a that's a given our bear conductor is obviously
our CPC and then we're left with two one of these is going to be neutral and one of these is going
to be switching line but it's which one you're going to use for which in the old system pre-2004
the cable colours were red and black line was red and black was neutral so often people think I'll
use the black now as our neutral connection actually the industry looked to denaturalise
black because black is one of our phase colours or line colours so actually we're not going to
use the black one as our neutral we're going to use that as our switching line connection
and we're going to use our grey one as our neutral but in order to identify these two we're going to
over sleeve them the grey one with blue to make it the neutral the black one with brown in order
to make it the switching line so let's start by making these connections inside our ceiling rose
which looks fully packed we've seen in previous videos how to double up our terminals you notice
we haven't used the outside ones there where the flex would go for either my batten lamp holder or
my ceiling rose and pendant and the only reason I've taken them off is to make it easier for
you to see what I'm doing I don't recommend you disconnect those conductors because obviously it's
two more conductors you've got to make back in so this three core is going off either to another
lighting point or it's going off to our fan isolator let's make our connections so we'll do
our CPC one first and we'll just loop that around try and keep it as neat as we possibly can in here
to make our CPC connection over sleeving it with green and yellow I did say yellow in one
of my videos and I got pulled out a load of times for that one I apologize for slightly in correct
pronunciation I can't even say pronunciation either so it's good right okay so there we go so
we're going to connect our CPC doesn't matter if it's not going in the same it's a brass terminal
with two holes so we can go in either one we'd have to join the other ones it's a solid brass
terminal we talked about that in video number one just pop the screw out there so you can
see we're in there very fiddly imagine this was upside down that screw would probably
now be on the floor and I would be looking for it the rule is whichever way you think
it bounced it's probably gone the other way there's a top tip for you so CPC is connected
what's next well let's do our grey one we're going to bring that round it doesn't matter
which of the two we join it in again solid block but probably not going to use the outside one
because that's where the flex is going to be for our pendant bringing some blue sleeve in probably
could have used a slightly tighter one but we're going with that one we're going to dress it round
and we're going to make our connection in our neutral block so that takes our neutral through
choose choose these again
strip that one back check it looks about the right length so we can
dress it reasonably neatly in looks fine to me and we join our neutral together
pop that one in there
so it's that connection let's bring our sleeving around
so our grey one becomes our neutral in our three core can either be like I said
go to your fan isolator or be going across to another lighting point let's wiggle that down
and then dress it into position so we've got that one in there like that so that's our neutral in
we'll do let's do a line one next we're gonna have a little bit of crossing over
there we can't help it I'm just going to bring it down and bring it in this end one here again
it wouldn't matter if the threes which ones I went into strip it differently this time
okay so strip that my outer PVC and I'll connect my line connection so that will go through
to the point that I need it at whether it be the extractor fan or another light fitting it's quite
cute taking a three core between light fittings so you can carry the permanent line through
so that's made that connection and then we've got a switching line so we can have that go through
as well so again brown sleeving in identifying the black as a switching line you can see how
it's getting a little bit thinking imagine you were changing this point here for say
a new light fitting there's a little bit of thinking got to go on in order to make sure
you are comfortable with all your connections because now we've got a black one which is a
switching line we've got a blue one which is in a neutral which is a switching line
we've got a grey one which is a neutral so there's a fair amount going on in here
and just pop that one in so we'll get the sleeving down a bit first before we start
and we make that connection so hopefully you're thinking about the applications for this
especially where you're carrying it through to a another area it's made that connection as well
so there we have it we've got our connection with our three core which will take our neutral on the
grey conductor identify with blue sleeving a brown permanent line connection and our black with brown
sleeve in which is our switching line through to a fan isolator and from the fan isolator say to the
extractor fan or we've taken it through to another ceiling rose and pendant where we would have the
grey with blue sleeving as our neutral the black with brown sleeving is our switching line and then
we would have the brown in the loop terminal at the other point that's coming on at the same time
meaning that we could go from here obviously to another area in the house and we've carried
the feed through to that so there's a nice little little trick for doing that and again like I said
I've done some wiring diagrams on that as well but as always I hope this video has been some help