so in this video today we're going to be looking at how you would go about filling
out an electrical installation certificate and what information might be required to be
recorded on this certification okay so if we look at the On-Site Guide Appendix G it's all
about certificating and reporting and this is what we're going to gain information from for
undertaking the filling out and completion of electrical installation certificate
we also in here okay we have model forms and again this is just an idea of how to complete
one of these certificates now you can use software and we're going to be using software in this video
rather than handwritten to show you two different elements with the minor work certificate that
we did we did that as handwritten and now we're going to look at maybe how we can save ourselves
some admin on or make it a bit easier for us as electricians using a software and this is the
start of our electrical installation certificate as you can see on the screen we've got client name
installation address the client address Etc so remember the client address could be different
to where the install is actually taken place a lot of the time it's going to be the same
however for bigger companies it may be different okay now obviously I can't leave the address I
used here in for obvious reasons but again that's just the information that will change depending
on where you're doing the install work then we have to talk about the extent of installation
covered by this certificate this was following on from an EICR so as you can see just put a little
bit information in there to talking about that this is the remedial work and say for previously
EICR now you could only have to do a minor work certificate however in this case because we change
the consumer unit as you can see and we put a new circuit in for a cooker and a hob while we was
there we've noted that now description of premises again depending on where you are this is where
you would select which one this was obviously in residential okay or domestic and then installation
is okay and you can see we've got three tick boxes there new and addition and an operation you look
at that and you think oh it says in addition a Minor Works covers an addition this would
maybe mean an additional circuit so you notice that I've picked two here putting an additional
circuit to an existing installation it's not a whole new installation and an alteration being
a consumer unit change sometimes we see that people have ticked new or in addition when we
put a consumer unit in where in fact it's actually just an alteration to an existing installation so
we tick which one there is actually necessary and then when we scroll down it will ask for
details of the company for the design construction inspection and testing also on bigger jobs it may
be that different people are undertaking the construction the design and the testing so if
somebody different has let's say somebody's installed it and somebody else has come in
and tested it or inspected and tested it it's important that number one the person inspecting
and testing must have seen the different levels of the job okay so they must have the design
information they also must have seen elements of the construction okay to make sure cables
are in zones Etc but that would be what we call a multi-signature certificate where different
people would have to put their details on there this is just for myself who's doing it so I'm
responsible for the design construction and the inspection and test it details of any departures
or exceptions from BS7671 it could be that you're actually in an industrial setting and you don't
want an RCD on a socket outlet and you've done a risk assessment for that and you've labeled the
socket again that's something you would maybe know here and anything thing else that is departed from
BS7671 is in the installation it isn't included in BS7671 then we have a box here where we talk
about the comments on the existing installation so again anything you find remember this certificate
relates to the work you've done so it might be that you've noted something and this it's
a good idea to put it here that just allows the customer or the client to see what the in-state
because remember they might not be there so it gives them little ideas okay and then it talks
about signatures here and then an important one the next inspection okay so when you have
a brand new installation okay so an installation from scratch it's actually up to the designer to
allocate the next interval of inspection and testing to an EICR and we will come to them
certificates in a later video or not so difficult sorry reports once you go to that first interval
so let's say the designers picked it at 10 years when you go back as an inspector and tester after
them 10 years it's actually your job to provide the next interval and that will be based on what
you've found the condition of the insulation and lots of other factors so that's the first page
of the electrical installation certificate again basic information really then we move
to system characteristics so what you're going to see here is you're actually going to see earthing
arrangements you're going to have to allocate an earthing arrangement to it depending on what the
system has number and type of live conductors so we had AC one phase two wire the two wire actually
being line and neutral then we have the supply parameters okay so notes here on this certificate
we have two nominal voltages as such we have for U and Uo so U basically is your line to line voltage
or your phase to phase voltage which would be 400 volts now that wasn't present in this installation
it wasn't three phase our Uo was 230 volts good thing about software it has little help elements
where it talks about this is the measured voltage between line conductor and Earth some of our test
results actually start going there okay so we have a prospective fault current which you can see how
to perform that in a video that will pop up on the screen now we also have our external earth fault
loop impedance so our Ze which is here 0.16 and again a video will come up on the screen so you
can watch how to undertake that test we then talk about the maximum demand and the supply
protective device which we put information there if we can't access that maybe the device isn't
labeled up okay from Supply Authority we may have to put unknown in there dependent on what we find
then we have particulars of the installation so this is we're going to basically talk about means
of earthing we have two types really distributors facility and Earth electrode Earth electrode would
be maybe if we had an earthing arrangement that says TT we don't have a TT installation here
we have a TN-S earthing arrangement therefore the distributor so Western Power has actually
provided us with our means of earthing so then NA goes in these boxes here where it talks about
Earth electrode so if you ever have Distributors facility and that's what you've been provided with
then the following boxes where it talks about earth electrode is going to be not applicable
here we have talked about the main switch switch view circuit break RCD so it's really talking
about the main switch in the installation again you fill these out dependent on what
you actually have in your installation so we talk about conductor materials number of poles
this is a double pole switch a common mistake is people insert fuse device settings okay so
they'll put that as 100 amps when actually it's not a fuse it's just a switch same with
the RCD if it's just a double pole main switch to BSEN60947-3 then there's no RCD operating current
Etc that's only if you have an RCD main switch we will be able to put input our RCBO information or
RCD information that we have in the board at a later point in the certificate then we talked
about the earthing conductor again the size the material did it past the continuity check and
again with our main protective bonding conductors again with sizes Etc if you're not familiar with
ADS the video will come up on the screen okay because there's all links to ADS and the sizes
the video will come up where you can watch that to re-familiarize yourself with the sizes that
thing should be especially in newer installs now one of the biggest changes on the electrical
installation certificate from Amendment two of BS7671 2022 to the previous Edition is actually
the schedule of inspections now if you look the previous schedule of inspections okay was over a
couple of pages and as you can see there's lots of different check boxes we have to check now
it's important to know that we can only put a tick or an NA in these boxes okay it can either
pass or it's not applicable to our installation so when we use NA it means that there's nothing
in our installation that we've covered that we've worked on that is applicable to this certificate
yeah as you can see it's two pages there's lots of headings there now one thing that hasn't really
changed is if you look at the subheadings of them two pages that's what really we have here okay now
the points that we was checking previously were still checking for most of these some of them
have changed so especially for the condition of the consumer as intake equipment as you can
see on the screen now that a couple of them we don't actually have to check where we did before
but most of them the same but again consult BS7671 for the inspection points that are
needed for each of these subheadings and a newer one now we have here is the prosumer's
low voltage electrical installations okay and it's talking all about energy efficiency and
things like that so again it's going to save us a lot of time as electricians especially with
admin work we all hate it to a degree then we come on to the boards and the circuits
so as you can see okay we now have circuit details and circuit test results now it's
been very very important to remember for an electrical installation certificate to be valid
it must be accompanied by a completed schedule of inspections a completed circuit details sheet and
a completed circuit test result sheet that's new to the amendment circuit detail sheet was never
a requirement whereas it is now on the circuit details we have information of the designation
of the circuit number of points the type of wiring Etc and all of these will be different dependent
on the circuit you install or the circuits you're testing reference method so we can change them
there the size of live conductors okay and the size of the CPC disconnection times are over
current protective devices their ratings Etc okay so we used our RCBO's in this installation so we
have 61009 and they were type B and we're talking about B curve there they were type
A RCBO's as well in the RCD section the I Delta N value which you can see here was 30 milliamps
and then this is where we put in our test results we've got our ring final circuit
tests a video will pop up on the screen so you can see that being undertaken we have our R1 plus R2
so our continuity of protective conductors again these videos are available for you to watch and
revisit how to test these we have our insulation resistance tested okay which has slightly changed
as well which will come in a later video now what it talks about with insulation resistance
is we should undertake the insulation resistance especially for new installs as such we should
undertake it before any equipment is connected okay so we can actually test it 500 volts to
bring it away from testing at 250 maybe where we have equipment connected we then talk about
polarity okay which would have been done with our continuity protective inductors here our measured
Zs so our earth fault loop impedance again video will come up on the screen of testing earth fault
loop impedance in different ways to test it on different settings our RCD test results so again
this is a change for most of us we went from recording times one times five okay to record
times five only last time in the previous edition of the regulations and now that's actually changed
which we've done a video on again where we only need there's only a requirement to record at one
times the RCD's value the RCD test button we must still check and record and then any AFDDs
again we're going to start installing these now so these will become a little bit more common
again not applicable to this installation so the NA is quite important because it just means that
the work I did and the work when we was there this certificate does not cover any AFDDs that
will come in in the future okay because it was not applicable at the time of this and the date
of this certificate circuit vulnerable to test again this way you put maybe you've got smoke
detectors or anything like that naturally we've used our RCBOs which are vulnerable to testing
especially with insulation resistance therefore just to let any future electricians know if they
come and look at this before they attend the property they should have an idea that there
is vulnerabilities there and it gives them a chance to plan ahead again we must have the
person who's tested its signature and the day also now again remember electoral insulation
certificate has to be accompanied by a completed schedule of inspections a completed circuit detail
sheet and a completed circuit test result sheet as always we hope this video has been some help