so i've come back to my two way intermediate wiring diagram because i was asked a question
if for instance this last switch i wanted to continue on to another switch
in this video and if you haven't seen it already i recommend you check it out on the wiring diagram
of intermediate switching so in other words we've got two way and intermediate switching i said you
can have as many intermediate switches as you want so within this section what people think it is as
long as at each end there is a two way switch so here we go this is our two-way switch remember
common L1 and L2 or numbered L1 L2 L3 etc but it's that layout for a two way switch and remember it's
only got one switch on the front so it's a one gang so i said we must have those at either end
with as many intermediate switches as we like this being a one gang as we turn it over we've got the
four terminals making this an intermediate switch and that's what we've got on the wiring diagram
and i was asked the question what if i wanted to go beyond this one with another switch when i
said you can have as many intermediate switches in the centre with two way switches at the end
it's actually easier than you think in order to do that wiring so what we're going to do is
take this switch out and we're going to add one beyond it so we get four switches but not putting
it in here which i've said in the video you can have as many intermediate switches as you like
so let's pull the drawing back we're going to change this switch and we're on from this switch
so if i bring it in i'm going to bring in my drawing here like so so i've got
an intermediate switch and a two way switch so all that's going to happen is is the two
way switch on the wall is going to be taken off and you're going to introduce at this point here
the intermediate switch and then the next switch becomes the new one becomes a two way it's a lot
easier than it sounds so let's just bring the drawing across okay so if i sit there on top of
there what i've done now is just move it into the centre for you what i've got there is i've gone
two way intermediate taken off the two way switch introduced an intermediate switch allowing you to
wire another new switching point so if i stick that down and we'll introduce then the actual
wires and conductors themselves so let's stick that into position make it a little bit easier
for me so the two way switch is taken off two way switch is taken off the wall and we introduce
an intermediate switch that's all we're going to do so the cabling system stays the same so we go
there to there like so and what we've got now is still got this three core cable so we've got this
three core and cpc cable that would have gone into our two way switch is now still in the box
but obviously that switch has been changed and changed over to an intermediate switch and we'll
need to wire from this point to our new position making it the fourth switch in the circuit
and as we said before each end we should have a two way switch we've got two way switch here
and we'll have a two-way switch down here so this cable remains the same but our connections
become different now because it's an intermediate switch and we'll add a cable from this position
to our new position which is our fourth switch which is the two way switch so what i expect
to happen is the switch that was here originally that were taken off we've just moved it into this
position and we've introduced an intermediate switch here so that's what we get so we go
uh intermediate switch intermediate switch two- switch so the three core cable
let's make those connections so it would go in here as before into the box to make our
cpc connection of our three core so our three core cable being our cpc is connected back into
either the back of the box or into the front of the switch if it was metal etc we've got plastic
boxes at college so this would be secured in the back of the box and not anywhere
onto the actual plastic frame we've still got the three core so we bring the brown down
the brown now goes into intermediate switch remember on an intermediate switch we are
either in the top two terminals or the bottom two terminals so this three core coming down
i'm effectively putting into the top two terminals so brown one goes in here
we've got a grey conductor which again will need to be identified with brown sleeving remember as
it's a switching line conductor we'll have to over sleeve our grey conductor and our black
conductor in order to identify them as switching lines we'll introduce what's probably still on the
cable isn't it our brown sleeving and now we've got another connection haven't we because we know
an intermediate switch has our four connecting points the black which is our common in our
two way circuit the common one comes and passes through our intermediate switch it isn't connected
in any of the terminals it passes through and i've drawn a picture there of an old fashioned five amp
connector block here it could be a red through crimp which i've shown in a previous presentation
it could be one of these style ones from ideal industries as a connector or one of these wago
connectors sometimes if you're saying it correctly it's actually wago but we call them wago's don't
we so that there is a connecting point not within the switch itself we make that connection as we
did in our previous intermediate switch so our black comes in and passes obviously out
in a moment remember we must put brown sleeving on that so that was the three core cable that we had
originally that was in the switch under here which was two way which is now an intermediate switch
we now wire into our fourth switch and that's where we're ending it so we know the last switch
and first switch in two way intermediate needs to be a two-way switch so we've got a two way switch
down here like so so we've got our two-way switch common L1 and L2 or variants on that it might be
uh L1 L2 L3 etc but we've got that arrangement so either way round one on its own is common L1 and
L2 etc so a common terminal so we've got to make sure we get the right cable colour into common
and of our three core ones that we use i use black as common and i use my grey and my brown
as my L1 and L2 and obviously got a cpc so a three core would be wired from this old position to our
new position in order that we get an extra switch added so let's put the cpc in first
so if i take my cpc down to link those together we also have to strike it with a little bit green and
yellow so let's put the yellow on as well making that my cpc my black of my three core connects my
terminal block in here to my common and again we must make sure we identify it with brown sleeving
like so and it just leaves us now the grey and the brown of our three core in order to
connect into our two way switch it doesn't matter which one of these two terminals that
goes in but for ease of drawing i will come out of this one down to here with the brown
and this one down here with the grey so let's bring our brown other three core down
into L1 or L2 it doesn't matter which of the two terminals that is so it wouldn't matter
which one of those two we chose as long as it wasn't common and then we bring down our grey
like so let's make sure we put our brown sleeving on this end here are the three
core we'll need brown sleeving on the black as well as the grey as well as this grey here
so that was simply all we had to do so let's pull it around slightly so hopefully we can
see the switching arrangement can we see the full switching arrangement just there okay
so we've got two way switch intermediate switch in our original drawing this was actually a two
way switch i was asked how i could put a fourth switch on the end we now go two way intermediate
use the same cable that was there before swap the switch that was a two way or an intermediate add a
new three core cable into circuit make the connections at the end making that our two way
so hopefully that answers the question how can i add a switch on the end of a circuit that was two
way and intermediate originally i've now added two intermediate switches and moved down my two
way switch so that was the question that was asked so as always i hope this video has been some help