up bright and breezy today and i'm not on site to see you marcus i'm on site to see the learner
which is the other side of the camera now gone all camera shy so marcus has stepped in you're here
to assess today is that right marcus yeah i am yeah so we've got a learner in situ in a domestic
dwelling and what they're up to today so today on the assessment they're going to be upgrading
the consume unit and they're also going to be carrying out some remedial work around the home
okay so before we get a ton of comments below about a non-qualified electrician doing
notifiable work how is that going to work for the learner so obviously a consumer unit upgrade is
a notifiable job therefore he's the QS on his company he's currently working for is going to
notify his bar we're hopefully going to see them later on probably won't see them on camera but
we'll see those later on so you're here to assess the learner i saw the learner when i arrived
running around with their multi-functional tester carrying out earlier tests before we started the
job what's that all about so he's undertaking some pre-tests obviously we've got certain issues where
we've got circuits not on an rcd and we're going to introduce an rcd protection on them circuits so
we're checking for low insulation resistance yeah we're also expecting our learners to carry out the
fault loop impedance test before you say oh there's rcds and all the rest we know that
we're trying to set that standard practice that we carry out all the tests before we start and then
we carry out the change of the board and then we re-test the circuits afterwards hopefully to
remove any issues that we get nothing worse than trying to walk out that door is that we can't get
an rcd to reset so with that in mind let's have a look at the new consuming coming in next yeah
so marcus you have to step up again we can get the learner not to be in camera shot when we've
got our hands yeah looking at the consumer unit i don't recognize the brand in the top left hand
corner can you tell me what's going on there yeah so you're speaking to the learner he said that he
ordered a Lewden board with glued in rcbos etc however the wholesalers he got it from it's
actually rebranded as steeple now it's probably something like Lewden owned Steeple in there
they've rebranded it i like that so if we just whip the cover off and you suggested on his behalf
that we were fitting our rcbo's which we like we are looks a little type a symbol there brilliant
so we've got those going to the actual consumer unit itself however i did notice when i was
unpacking the stuff that we've got one breaker 32B which is non-rcd protected what's going on there
so basically on this install there is a small summer house at the end of the garden with uh
swa cable running to it and there's rcd protection in the summer house itself so we're not going to
put it on the rcd in the house we're also going to fit and i think we can see just there the
Lewden symbol we're going to fit an spd well we're not they are so we're going to fit an spd and it
says doesn't it in the electrician's guide to the building regulations it should be fitted as close
as possible to the main switch yeah it's just about that yeah any problems with that so the
problem we have now is the bottom terminal yes for protective earth okay now if we had it too close
to the main switch we've got the bus bar okay so what we're saying there is this bar here we would
have to instantly cut it down because obviously we would be connecting the protective earth
onto the line connection so we're going to end up i suppose the loan's going to end up putting on
this end yeah is that true yeah okay so that's cleared the consumer unit out so i think it's
time to get them on camera and start changing it and maybe we can just drop in and out and just
give a few little tips to our domestic installer learners so what the learner is currently working
on ripping out the old consumer unit i've been playing around with the new one and i've found
something out so every day's a school day once i put the bus bar in position so i've just loosely
put it into the consumer itself and it sits in like so the manufacturers left it so we can
actually install the spd on the end so we haven't even got to cut the bus spa down we've got the
protective earth coming out here and the line and neutral here so they've thought about that
already as well okay so learners part way through is consuming changes always they're desperately
trying to make it as neat as they possibly can but restricted by the conductor length um and just
note in there from slightly different than what we said before it's a 40 amp feed to the outside
summer house and the 30 time break will be used to feed the spd you'll also notice that now the
main switch has moved from the right hand side to the left-hand side so there's been some sticker
adjustment actually on the consumer unit as well look at that next so what's happened here is we've
replaced the area here which said main switch stuck another sticker here same main switch
from the actual sticker pack itself so you get enough stickers to be able to do those
adjustments so we've used these two here and one from there so now we've got the main switch
okay eagle-eyed and make sure we're not finished yet the QS is on his way and they're going to
sort out one or two bits when um he arrives just to show you a few bits if we take the guard away
um we only had a piece of 10 mil which is acceptable six mil or greater for the protective
earth from the bottom of the surge device and we measured it to be half a meter and we cut it
back from that length so it's definitely under half a meter in length we're still to wire the
top part in so we're waiting for the QS to come with a bit of cable so we can wire from the 32
amp breaker the line connection in and then from the neutral to the neutral bar and the kenoid
amongst you will notice the neutral bar now is not quite in the right sequence because we moved
the main switch to the left-hand side and they're going to re-label that as well when they start the
testing process the next part of the video that i want to show all my learners is the stickers
required on the front of the consume unit when you've finished so there's still some more work
to be done here by the learner in the qs we're now concerned about the actual consumer unit front
so let's have a look at the front of the consumer unit we've got some of the stickers
so let's pause and think about the other stickers that need to go on the front of the consumer unit
so we definitely need one for two versions of bs7671 because we have both red and black and
brown and blue conductors in the installation the stickers are currently on here the QS is bringing
the rest of them we've got the one for the rcd important is tested every six months or half
yearly and then the importance of re-inspection the date will be inserted by the QS and the
re-inspection date no greater than 10 years for a domestic dwelling so there's one more sticker
to go on the front there is also a sticker that we expect the QS because we spoke to him already is
going to stick on the inside here of the lid which has more information about the testing results and
the chart information that goes on your testing paperwork so that will go inside there let's lift
the lid and look at the stickers that have been inserted to identify each of the rcbos as well as
the circuit breaker that feeds the surge device so there are all the stickers in there so hopefully
that's helped our learners for the domestic install of course about labeling the consumer
unit after the inspection has been completed by the QS i hope this video has been some help