today we're going to take a closer look at NYY and tuff sheath cables
i'm going to find out very soon okay so clear up the popular misconceptions for me straight
away gordon yeah okay well yeah well we've tried to clear them up because we always uh
yeah we've been interchanging things ourselves don't we so sometimes we've heard cables nyy
sometimes we'll call it high tough sometimes we call it TUFF Sheath and the manufacturers
of Tuf Sheath Doncaster kelp have asked to sort of clarify the situation um so that you don't make
some uh some yeah challenging mistakes out there when you when you're using cable now obviously
ny is a cable that's used extensively across europe it is so so the difference just being
we could get the names wrong is that the only difference no so we're going to look at probably
the biggest difference because a lot of people will say well yeah nyy cable is just armored
cable without the armoured okay okay yeah sounds about right to me so prove me wrong well nyy cable
has never had armor okay yeah okay okay it's a european cable manufactured you normally i love
a part number well in this case an iec number to iec 60502-1 all right okay i might ask you to say
that again later on in the presentation okay well i've put one for you armoured cable yes yeah what's
the standard for that well the the doncaster tough sheath is generally two bs five four six seven as
well okay and that is the same standard that would be used to manufacture armored cable that we used
to find in in the uk and that's where the first big difference between the two is that NYY and that
Tuff Sheath is actually the insulating material around the conductors what is it in the uh NYY case
so NYY will typically be PVC insulation so that's thermoplastic PVC maximum operating temperature
of 70 degrees yeah 70 degrees c okay and as the tough sheath has been manufactured to the same
generally too as armored it's actually got the crosslink polyethylene which is the thermosetting
PVC around the conductors which has a 90 degrees maximum operating temperature so you can carry
more current for the same size cable yeah and that's where you could really come unstuck if
you're not careful because we're seeing it a lot in ev installs right okay that's the Hi Tuff
cable tough shape so imagine obviously it's a tuff sheath , tuf sheath have i done it wrong oh
yeah tough sheath okay so so yeah let's get that right so I specify tough sheath tough
sheath which we've got the thermo setting pvc and i then go to the wholesalers and buy my NYY
cable which i think is the same yeah it isn't because it's only got 70 degrees so 90 degrees
a massive difference in the current carrying capacity yeah that's a clutch yeah so yeah i
wonder yeah be careful of that one now we've been using it a lot on the channel everywhere that's
what's brought us to this point here haven't we we've used it in a couple of different videos yes
so we've used it behind us yes we have in our ev installer we first used it with the easy charger
and what type of cable is this that's that's a TUFF sheath from Doncaster Cables it is not NYY um but
this probably is designed for NYY and wouldn't be able to take a armoured cable as we know it
that's right because we know in here there's just this plug seal which you cut the top off
so it's like a large grommet and it's angled back isn't it so that wouldn't take an armoured gland
possible yeah yeah to get the armoured gland in and a massive challenge to get one in there and it's
designed to take in this case tough sheath cable yeah we also used it on a lighting circuit because
first of all we think it looks considerably neater that's me yeah i mean i don't so yeah that's the
first advantage yeah and what we did there we come out of a fox box didn't we yeah we brought out
what type of cables that we brought out we brought up some Tuff sheath, we did and we went down and
we went to a little fred box from raytech as well check out those two videos i recommend those ones
looked incredibly neat didn't it yeah i mean that's that's the advantage you obviously get with
this cable so okay you're using it outside yes fixing cables direct outside without additional
protection can cause some challenges particularly if it's twin and earth i think we've made a video
suggesting that twin nerf maybe shouldn't be put in the eye above my head or the description below
it'll pop up there so obviously this nice narrow cable yeah suitable for use outdoors has a degree
of protection against uh mechanical damage yeah i think if you hit it with a hammer we'd see that as
well shall we uh shall we try that yeah okay so let's bring in this camera so i'm going to get
the glasses my yes yes from earlier on glasses on so just give it a little uh whack for me yeah
so i said it i said so let's imagine we use the alternative which probably is plastic conduit so
okay just just stand back a little bit okay
okay so uh it might not be armoured cable but obviously, it's got a degree of protection
ideally suited to being attached to the outside of a building ev charging point been a great example
yeah we know if we then decided to perhaps we love this cable so much we start wiring maybe
garden lights and it is going to perhaps need a little bit more protection when we bury it yes
so if you uh yeah if you want to bury it in the ground it does need additional protection in the
form of something like this which is a twin wall ducting yeah and it might be a little bit smaller
than that but that's the one we've got as a visual example yeah i think this was the smallest one i
could buy it right okay so in order to give it a little bit of protection obviously where it's
buried in the ground okay so we're now going to take a little closer look with the camera i think
we're going to see how we strip it but also i want to just explore the different types of cores as
well with it yes significant difference yep so we've got in front of us here this is actually
gordon nyy dash j because one of the causes identified as a circuit protective conductor
you can actually get my y-o yeah which is obviously just got the phase colors in but
we're just going to call it NYY cam yeah yeah yeah yeah yeah yeah yeah yeah yeah yeah yeah yeah yeah
yeah yeah and my wife now yeah most of the time you see it on the shelf it's level ny dash j which
just means it's got the green yellow conductor now as i look at those conductors they're solid yes
now there's a big difference isn't there with the tough uh sheath is that correct yeah so nyy cables
tends to come with solid core conductors yeah all the way up to 16 millimetre square and how large
do they go up to in this style of cable well i can actually get them up to 300 millimeter squares
just a single uh conductor cables okay now these tough sheaths from Doncaster use
obviously, the same principles armoured so they're all stranded yes so if i strip these away here
and they they go up in core sizes is it three core one point five up to
five core six mil yes but they'll also do a three core up to ten millimeter square okay that
makes sense so this against xlp and yeah stranded conductors inside yeah stranded compared to solid
okay so they're they're they're differences so we've got just the pvc at 70 degrees there's
the insulated material thermoplastic solid conductors for the majority of the cable size
we can compare to and obviously we've got thermo set in pvc as well what about this
here glands this is what we're gonna be using isn't it yes again the other advantage
you can obviously because there's no arm at the terminator yes you don't have to have
the challenges of obviously putting steel-wide armored glands on there as well so that gives
us great flexibility right okay shall we see me strip a bit of this now then shall we see that
so let's start off by doing the tough sheath cable clamp down i'm going to just ring around
just drag it down my cable
just open it up just like so then it's a big difference now
when we look at the uh bedding material compared to the n-y-y-j that you can see that's all held in
place hasn't crumbled away and obviously we've got our stranded conductors this time as well
so i'm going to strip some NYY-J cable i'm going to use my Weicon stripper a little blade in there
which hopefully when i clamp it down will allow me to ring round and then
score down the outer pvc so we go on to there make it lock into position around a couple of times
before i'm going to send that blade actually down the cable rather move in the actual machine i've
moved the cable backwards it's always this little bit at the very end you've got to hope you've got
it all the way to the end otherwise i'll come back down the other side of the cable so it's
a little bit tight there if i come back down here you'll see that i can just peel it off
where it's ringed round and just separated out like so you can just see where you tend to drop
off the stripping tool at the end a little bit harder and then obviously you've got this bedding
material which is considerably different to the stuff that we saw on the tough sheath
okay so that's a yeah um so some more differences there that bedding material between what is the
ny construction and the one from doncaster being tough shape yeah really different wasn't it so
soft this stuff is yeah that just yeah just peels away yeah somewhere like a banana can i just bring
the camera and have a little closer look at that yeah now in some ways you're thinking well that's
lovely because that does just peel away yeah yeah but again yeah that's just the bedding material
there's nothing else yeah i bet you can't do that without one no so again you'd have to it's saying
yeah this is armoured cable without the armour so that the bedding material is what you're similar
to what you'd be used to on an armored camera yeah and as this is obviously designed really
for the continent they've got that softer bedding material in the ny yeah okay an important thing
current carrying capacities so again doncaster you can check out the the link i'll put in the
descriptions below they'll point you to what uh what table do within bs7671 go is it table
4E4A that's it for the current carrying capacity of steelbar armoured it is yes because obviously
using the same generally two yeah and then what you tend to find with ny came up they'll refer the
current carrying capacities of regulations from a different country and don't tend to list them
right on the data sheet so you're kind of on your own if you go down that route and we think it's
it's almost the perfect cable for most situations for ev charges don't we yeah hugely popular i mean
there is another video we made because we went along to the factory uh at doncaster cables to
see them making the EV Ultra cable yep so it comes back to it's the perfect cable because
they've added something in what they added into this cable so in this case we've got an additional
uh twisted paired data cable right you might use the hookup with something like a current
transformer if you're going to do some load uh load shedding or load mitigation did they also do
another version here with uh cat5 ah i thought they did yeah data cable if you want the need to
get a um an ethernet connection uh or multiple current transformers yeah just confirm that's
thermosetting pvc isn't it yeah yes it is yeah so okay so yeah they've got it all covered
yeah do you like the tough sheath cable and just remind us evie ultra is that right evie ultra and
that is available in armoured yep with the steel wired armor yeah and in the and the tough sheath
version um obviously without the armoured cable armour on there as well yeah and obviously yeah we
love that cable we think it solves a problem that's out there especially with the the future
of growth of EV charging and the amount of EV charging points, they're going to go in
so as always we when we want your comments so if you're an expert on this maybe you're from a
different part of the world and you fit a load of nyy cable please in the comments help other
people out within our community so it'll save us also answering some of those questions which is
lovely we'll answer as many as we can in there but we want to build a set of people that are in on
the actual comments that are helping other people so we've looked at today ny cable and doncaster's
tough sheath tough sheath cable and we've compared and seen the contrasting differences between the
two so make sure when you're specifying you know which one of the two you're specifying especially
for current carrying capacity we'll get back to as many comments as we can over the coming weeks you