so in this video presentation we're going to look at those very early skills my students
need to master in order to terminate a PVC PVC twin and CPC cable so we're going to actually
strip off the outside PVC and terminate the ends of the copper conductors line neutral and
circuit protective conductor we've already seen a series of videos where Joe's gone through the
construction the sizes in the variants of them so this video is all about the basic skills in order
to turn the end over in other words double the end over we're going to be using a fixed blade knife
in the presentation a set of side cutters and a set of pliers and we'll be introducing the green
and yellow sleeving onto the circuit protective conductor I understand there are tools out there
to make the job a lot easier but we're going old-school in this video let's terminate the
end next so following on from Joe in the classroom I'm going to show you once again how to terminate
the ends of a PVC PVC twin and CPC cable this is college way I understand there are tools that make
it considerably easier however when learners come to us often their dexterity and hand skills are
very weak so therefore we go back old school I'm going to terminate using a knife pair of pliers
and psychos so we take our PVC PVC twin and CPC cable and this is one millimetre squared when
they come down approximately a hundred and fifty mil down and we're going to take our knife and
we're going to score round the outside PVC not saw so it won't be on the bench and we'll be pressing
rather firmly into it will actually just score round the cable at approximately a hundred and
fifty mil so screw around top side side bottom side so I've scored around the cable all the way
around with my knife I'm next going to turn the cable around and we'll take my side cutters so
I'm going to take my side cutters this is quite important we're just going to use the cutting
action here this is a bit more students find the most difficult is that when they put it on here
they're too excited about cutting into it and then make a poor effort the first cut I usually make it
look incredibly easy and it isn't to get it in the right position so using that as the line on
the cable put it in the center and just take a moment to see it's fully in and we're dead
straight before we actually do the cut in action like so now what I do is I separate my conductors
out so I'm holding onto the to live conductors line and neutral and leaving the bare CPC in the
center I'm now going to hold onto those conductors and roll my knuckles out so as I do that it will
pull down the conductors are open in the out so let's see that in action so I'll hold onto my
two conductors in this case line and neutral and those roll my knuckles out like so once I've got
it started I'm going to pull it down just short of the area which is scored before breaking off the
outside PVC it gets easier the further we are away from it so we're almost there now so I'm going to
move my hands down and go a little slower and put it just short of that scored area now we peel off
the outside PVC you might see the white powder on here which is French chalk take off both sides of
the mechanical protection and I'm going to pull it away like so hopefully we can see we've got a
nice clear clean cut around the outside PVC and we haven't cut into the PVC of the conductors
themselves so we've exposed our conductors just to remind you of what I went through blue is our
neutral brown is our line and the bare conductor which will identify is our CPC we're going to
terminate the ends next it so we're going to do now is terminate the ends of our conductor so
I'm going to double over the line conductor the neutral conductor we're going to over sleeve and
double over the circuit protective conductor as well we're going to take our knife and we're gonna
come down about two centimetres and press a little bit firm around the thermoplastic PVC insulation
around the conductor's we know from Joe's video that has a maximum operating temperature of 70
degrees C we are not actually going to terminate these into anything it's just practice in those
hand skills so I'm going to set the distance down approximately 20 millimetres or two centimetres
down for each of our conductors we take a knife again and approximately 20 millimetres press
a lot firm at this time all the way around and hopefully it means we can just pull off the PVC
insulation on the conductors themselves remember the conductors are made of copper so we do both
I'm gonna use it to line up for the other one so I'm going to use the line and neutral to use
it as a reference point so we get them the same length like so press again thermal with the knife
around we go and hopefully he'll just pull away take our pliers next and we're gonna hold in this
case approximately slightly less than half the copper so I've got approximately slightly less
than half the copper here and slightly more than half of a copper conductor showing here the reason
being it will bend around the circumference or the side part of the pliers and see they're in action
so I'm going to take it from there and just hold it tightly to you from there and fold it over and
now moving on pliers and I've come now to the top side and then squeezed up that gap like so
and we've doubled over the conductors of course I've managed to find the best pair of plyers we
haven't got our college so it's not a lot of grip in these I'll try the other take the line
conductor I'm gonna take approximately half of it again so approximately just less than
half here slightly more than half there fold it around the circumference of the pliers squeeze up
that gap and we've doubled over both the line conductor and the neutral conductor of almost
equal doubling over let's look at the CPC next so terminate is the line conductor the brown one the
neutral being the blue conductor and now we've got our bare center conductor and from Joe's
videos we know that is our circuit protective conductor we need to identify terminations by
using green and yellow sleeving so if I make that approximately the same length as the PVC on the
live conductors and slip that off I can just slide that over onto the conductor itself and now I can
look at terminating this one over it's probably a fractional long at the moment if I just trim it
back a little bit and we've used exactly the same method as we did before slightly less than half in
the pliers slightly more than half this side fold first remove the pliers squeeze the gap up again
the pliers aren't the best but they're the ones you've got to use so I must be able to do it if
you can do it I've doubled over the conductor so we've got the CPC doubled over we've got the blue
neutral doubled over and the brown line conductor doubled over using a technique we expect you to
master within the first couple of weeks of being at college I hope this video has been some help
you