Fault Finding Testing for Insulation Resistance. Low Reading Insulation Resistance Fault

How to test for insulation resistance inside a consumer unit. Marcus is carrying out an electrical inspection and testing when he come across a fault giving him a low reading during the insulation resistance test. These videos will help with AM2, AM2S, AM2E and your apprenticeship end point assessments. The testing and fault finding is carried out with a Megger MFT tester in controlled conditions at Tresham College.
Electrical fault finding
Videos are training aids for City and Guilds (C and G) and EAL courses Level 1, 2, 3 plus AM2, AM2S and AM2E.
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Пікірлер: 99

  • @nodwaa9227
    @nodwaa92273 жыл бұрын

    im in my 2nd year now of my apprenticeship, and you are truly dedicated to teaching to the highest standard. my teachers are okay but i really wish you were teaching at my college. very good videos thanks. i probably learn more from these than i do at work and college :'D

  • @GSHElectrical

    @GSHElectrical

    3 жыл бұрын

    Keep working hard it has its rewards 🦾. All the best and thanks for commenting. Gaz

  • @nodwaa9227

    @nodwaa9227

    3 жыл бұрын

    @@GSHElectrical definitely. A week on Friday I have my 18th edition exam so fingers crossed 😄

  • @campo2309
    @campo23093 жыл бұрын

    Not just "some help" you're being a great help! Thanks a lot from SE London

  • @GSHElectrical

    @GSHElectrical

    3 жыл бұрын

    Thanks 🦾

  • @colinevans7134
    @colinevans7134 Жыл бұрын

    I'm not a electrician but mess with electronics, these videos always show how to test for fault finding and I've learned alot from watching these great videos on KZread. Thanks for all you trademarks who show your skills to others because I've learned watching someone showing there trade rather than reading a trade

  • @GSHElectrical

    @GSHElectrical

    Жыл бұрын

    Thanks for the kind words Colin 👍🏻

  • @seandempsey7351
    @seandempsey73512 жыл бұрын

    Fantastic demonstration guy’s. It’s always good to keep learning and refresh your memory and keep on top of how we do things like testing and so on. Fantastic video guy’s as always 👍👍👍❤️

  • @eddprice4571
    @eddprice45713 жыл бұрын

    Excellent video guys I really enjoy the testing elements as they get your mind working. 👍

  • @jenvis2745
    @jenvis27453 жыл бұрын

    Great video again! All testing videos would be helpful. Thanks.

  • @GSHElectrical

    @GSHElectrical

    3 жыл бұрын

    Checkout my playlists for many more testing videos 🦾. Thanks Gaz

  • @dimitrisdoumarapis3326
    @dimitrisdoumarapis33267 ай бұрын

    Brilliant video and very informative. Easy to understand and gives you the confidence to investigate step by step

  • @Kebabicide
    @Kebabicide3 жыл бұрын

    Great help and refresh thanks, especially with my lvl3 live/dead testing and fault finding assessment tomorrow (having been waiting, and out of the loop, since April).

  • @Hedujas001
    @Hedujas0013 жыл бұрын

    All videos are in great and professional detail. Very recommend to anybody in this trade.

  • @GSHElectrical

    @GSHElectrical

    3 жыл бұрын

    Thanks I totally appreciate your support 👍

  • @thomasbyles3075
    @thomasbyles30753 жыл бұрын

    Love these fault finders :)

  • @richardwhitwam9979
    @richardwhitwam99793 жыл бұрын

    Great keep them coming 👍👍👍

  • @__TAYLORM__
    @__TAYLORM__10 ай бұрын

    mate these testing videos are absolutely brilliant, so helpful! Thank you guys :)

  • @GSHElectrical

    @GSHElectrical

    10 ай бұрын

    Thanks for watching and the support 👍🏻

  • @erickademe
    @erickademe3 жыл бұрын

    Thanks for the informative videos much love from 🇺🇬

  • @krazylad84
    @krazylad843 жыл бұрын

    excellent stuff, thanks for the help

  • @lcutz9854
    @lcutz98543 жыл бұрын

    Excellent video, thanks guys 👍

  • @testingtechnicians6751
    @testingtechnicians67513 жыл бұрын

    As always good one again

  • @inibehealfred3932
    @inibehealfred39322 жыл бұрын

    Really delighted Iwatched it. very educative

  • @rasithithionndwela1951
    @rasithithionndwela19512 жыл бұрын

    i learned more here than i did in college , good teachings ,thumbs up

  • @GSHElectrical

    @GSHElectrical

    2 жыл бұрын

    Massive thanks for the support 👍🏻

  • @benaplin5827
    @benaplin58273 жыл бұрын

    Brilliant help, videos always very useful keep it up guys

  • @GSHElectrical

    @GSHElectrical

    3 жыл бұрын

    Thanks for the support 👍

  • @troydavies7311
    @troydavies73113 жыл бұрын

    Love to join ur college great video again. Keep them coming for us all ive learnt loads from ur vids 👌🏾

  • @GSHElectrical

    @GSHElectrical

    3 жыл бұрын

    Thanks for the positive comment 🦾. Gaz

  • @troydavies7311

    @troydavies7311

    3 жыл бұрын

    @@GSHElectrical thanks Gaz, love watching how well u present ur classes there so detailed .. appreciate them all .. i can say im keen watcher 👍🏽

  • @joelnenadovich8141
    @joelnenadovich81417 ай бұрын

    Good effort lads

  • @TheAlexdepa
    @TheAlexdepa3 жыл бұрын

    Ottimo video e ottima spiegazione

  • @gabeerlazem7798
    @gabeerlazem77983 жыл бұрын

    Thank you 🙏

  • @no_short_circuit
    @no_short_circuit3 жыл бұрын

    As an adult learner anything on fault finding is a great help. Coincidentally, I've been watching JW's videos on "borrowed neutrals" so a future video on how to find one using IR would be great. Thanks again for the video.

  • @andreradu7348

    @andreradu7348

    3 жыл бұрын

    I’m an adult learner as well. How do you find your course? I’m a bit disappointed with the lack of practical training from the course provider.

  • @titmando1199

    @titmando1199

    3 жыл бұрын

    @@andreradu7348 I'm an adult learner too, you can't expect a lot of practical training if you are studying at a slow pace and in your own home, to get the experience you want you will have to find a job as an improver (provided you pass the building regs phase and get a ECS/CSCS card), find an electrician willing to take you on as an apprentice. The only way you will get practical learning sessions is if you go to college for it.

  • @andreradu7348

    @andreradu7348

    3 жыл бұрын

    @@titmando1199 Being an apprentice at 25 with an average of 150-200 quid a week isn’t doable. Unless you live with family and all expenses paid for. I heard that certain course providers do offer workshops on a regular basis for all students regardless of levels, hence my comment. Electrician mate jobs are scarce in my area and when they do come available they get filled up quickly. College is a good alternative which I was looking into but unfortunately next term starts in mid-September 2021 😓

  • @mdmvukengineer4873
    @mdmvukengineer4873 Жыл бұрын

    Excellent 👍

  • @MohamedFai-qt7cm
    @MohamedFai-qt7cm8 ай бұрын

    Thank you so much for teaching me

  • @GSHElectrical

    @GSHElectrical

    8 ай бұрын

    Thanks 👍🏻

  • @smarthomesystemsdemohousec697
    @smarthomesystemsdemohousec6972 жыл бұрын

    Excellent videos

  • @GSHElectrical

    @GSHElectrical

    2 жыл бұрын

    Thanks 👍🏻

  • @Death88758
    @Death887582 жыл бұрын

    Thank you very much

  • @garydrumm7263
    @garydrumm72633 жыл бұрын

    excellent video Marcus since you are doing a run of fault finding videos may be you could done some thing on Erroneous connections . Thank You

  • @ericthekingthekingtheking4842
    @ericthekingthekingtheking48423 жыл бұрын

    If it is lighting and as you say split the circuit mid point and the leg coming from the board is clear i connect back up then youv got lighting to some of the property while you find the fault on the other leg, usefull if its getting dark at least theyl be light coming in same on a Ring main lets say split mid way whichever leg is clear bang back in the breaker at the board temporarily gets half the sockets on 👍 great videos these

  • @shawnshawn911
    @shawnshawn9119 ай бұрын

    Great clear video. Thanks for uploading. Is there a way to get MFT testers at reasonable price for persons who are able to afford one?

  • @junaidpatarn7390
    @junaidpatarn73903 жыл бұрын

    Good work

  • @GSHElectrical

    @GSHElectrical

    3 жыл бұрын

    Thanks

  • @Adywebb123
    @Adywebb1233 жыл бұрын

    When testing across Neutral and earth. Whats the minimum reading you would expect an rcd to trip out.

  • @sohailmalik8585
    @sohailmalik8585 Жыл бұрын

    Very helpful

  • @GSHElectrical

    @GSHElectrical

    Жыл бұрын

    Thanks

  • @vikingofengland
    @vikingofengland3 жыл бұрын

    Good ol' Binary Chop search!

  • @timh5529
    @timh55293 жыл бұрын

    Gaz, What's your opinion on EAL vs City and Guilds? I've gotten some mixed opinions vs the two. I'm currently an apprentice doing EAL as that was all my college offered. Thanks, your videos are amazing.

  • @vievlogs589

    @vievlogs589

    3 жыл бұрын

    He is an EAL guy for full time learners and C and G for apprenticeships 👍

  • @franciskhoxy8268
    @franciskhoxy82685 ай бұрын

    How can I master the insulation resistance and loop empedence testings???? Help👏🏾

  • @SuperZubair786
    @SuperZubair7863 жыл бұрын

    Great 😎😎

  • @markkennard861
    @markkennard861 Жыл бұрын

    Here in NZ the megger voltage is around 1000v. Do your regs call for 250v testing ? Interesting to see how regs vary form country to country. Ring ccts are illegal here too.. In order to keep our registration active we are required to do a refresher course every two tears... I mean years.. :) Last refresher I was a week late and I received an email stating I must not do prescribed electrical work even tho I have a spotless track record for the last 40 years. Another interesting fact thats way over the top IMO is if you fit a back to back power point ( or GPO) the 6inches of cable requires to be insulation tested. Insulation testing goes hand in hand with earth loop impedance tests.

  • @thetruth6693
    @thetruth6693 Жыл бұрын

    Any links or tips for taking my 2391 guys?

  • @abdulazizdotty6980
    @abdulazizdotty69802 жыл бұрын

    Hi please help me on this, both my live and neutral are positive.

  • @gbelectricks
    @gbelectricks3 жыл бұрын

    Could you clarify? if I was doing a global IR test, and I got a reading of below 2 Meg Ohms, say 1.5 Meg Ohms. Then I would be required to investigate further, and test the individual circuits. And if I found one particular circuit was reading say 1.8 MegOhms then all would be ok as it’s above the minimum of 1 Meg Ohm as stated in bs7671. (assuming it was an eicr and not a new install). So on the test form would I still write the 1.5MegOhms? Being the global reading across the installation as a whole. Or would you write individual circuit ir readings on the form?

  • @GSHElectrical

    @GSHElectrical

    3 жыл бұрын

    It’s the overall insulation resistance of the board to be 1 MegOhm or more not individual circuits. It’s the old resistors in parallel calculation to find the overall resistance. If you had 6 circuit of 200MegOhms and one of 2MegOhms the overall insulation resistance would be less than 2MegOhms. Thanks for commenting and watching. Gaz 🦾

  • @electricalservicesmaroc
    @electricalservicesmaroc3 жыл бұрын

    GREAT

  • @GSHElectrical

    @GSHElectrical

    3 жыл бұрын

    Thanks

  • @greatbigblue
    @greatbigblue2 жыл бұрын

    Great intuitive videos as usual - keep up the good work - However, getting annoyed with all instructive/educational vids which do not allow for real life / on-site realistic approach/procedures. Does anyone else agree some vids should cover this. Example - Testing insulation resistance (Nobody removes lamps, dimmers, pirs, fluorescent lighting, batteries etc etc, it would take an age. So why not demonstrate test at 250v procedure with L/N connected together and testing them to earth ?? Opinions on this?

  • @stevensmith4449
    @stevensmith44493 жыл бұрын

    Turn the circuit on Listen and look for arcing and smell for smoke! Then get the tester out

  • @staceyismine
    @staceyismine10 ай бұрын

    My driveway lights15 keep tripping my kitchen circuit but the outside driveway lights are on there own switch on the board. The light can be on for 2min or 20mins then trip. How do I find exactly what is causing the fault in the driveway lights 🤯not a sparky

  • @SalopianBivvyman
    @SalopianBivvyman3 жыл бұрын

    What happens if the lines were dropped in and out of a lighting point but not in order of distance from the board? Daisy chained all over the place? As you occasionally find in older added on installations?🤔

  • @markkennard861

    @markkennard861

    Жыл бұрын

    Dont think it matters, as long as insulation tests are done and the cable/installation is fit for purpose.

  • @faithful5475
    @faithful5475 Жыл бұрын

    What if you have spot light and cant remove them all? What to expect?

  • @Robert-ts2ef
    @Robert-ts2ef3 жыл бұрын

    Would the test between neutral and earth not show zero ohms if the neutral was ultimately connected to the earth at the centre tap of the star side side of a delta/star supply transformer feeding the installation, or am I missing something?

  • @deang5622

    @deang5622

    Жыл бұрын

    You disconnect the earth so that doesn't happen

  • @smidgekat5296
    @smidgekat529611 ай бұрын

    Hello. I live in a rented property and have been told that I have an insulation resistance fault that was apparently found a couple of years ago and that an electrician will need to visit me. This may be a silly question but my house is quite crowded and all my power-points are behind book shelves with extension leads plugged in. Will he need access to all power-points please? This will be a bit of a task to sort before he arrives. Thanks for anyone who can answer this 🙂

  • @syafiqani2085
    @syafiqani20852 жыл бұрын

    It's like continuity Tester right?..

  • @johnburns4017
    @johnburns40173 жыл бұрын

    It says have all RCDs off. I assume this is the case also for RCBO's?

  • @GSHElectrical

    @GSHElectrical

    3 жыл бұрын

    👍

  • @randomelvis3359
    @randomelvis33593 жыл бұрын

    Hey, can i please ask an electrical question...i have an old cottage, Rcd consumer unit fitted but went to change bedroom light fixture and found Red, Black and a bare wire ...does a qualified Electrician fit Blue to Red, Brown to Black and green/yellow to the bare wire? 😉 Thanks

  • @garethrowlands1305

    @garethrowlands1305

    2 жыл бұрын

    Don’t do that your fuse will pop . Red is brown and blue is black in the UK👌

  • @randomelvis3359

    @randomelvis3359

    2 жыл бұрын

    @@garethrowlands1305 Cheers!!

  • @BigRedViking89
    @BigRedViking893 жыл бұрын

    Hi guys, I noticed there was no Live conductors to earth test carried out i.e. line and neutral combined to earth. Is that test not relevant. If not how would we record this on our test result. Would it have been worst of the two readings for L-E or N-E dependent which of the two had the lowest reading? Love to know this as I always get confused.

  • @GSHElectrical

    @GSHElectrical

    3 жыл бұрын

    Combined Insulation Resistance Test Line and Neutral Together to Earth & Between Live Conductors kzread.info/dash/bejne/qnxpqNqemLbWfZc.html This may help 🦾. Thanks Gaz

  • @Romeworld95
    @Romeworld953 жыл бұрын

    It's suggested you remove all lamps etc before IR testing. If there were an abundance of downlights, would you be required to disconnect all of these?

  • @gap9992

    @gap9992

    3 жыл бұрын

    I was wondering that and what about stuff like cookers and other connected appliances?

  • @spcyman7209
    @spcyman72093 жыл бұрын

    I refer to it as the split/half method.

  • @GSHElectrical

    @GSHElectrical

    3 жыл бұрын

    Nice 🦾

  • @bonaminhrasmey42
    @bonaminhrasmey427 ай бұрын

    ❤with that kind of fault would the circuit still if you don't have to do anything. 😊

  • @pr0ct3r0
    @pr0ct3r03 жыл бұрын

    glad Harry Maguire has retrained... football wasn’t for him 😂

  • @garethrowlands1305
    @garethrowlands13052 жыл бұрын

    Let’s say it’s an old instillation And the lighting circuit was just 1 light and let’s say 20 cm away from the point of test . If the result was still just over 1megohm . I thought that would still be a pass ? I still agree there’s something sinister going on but as far as I’m aware that’s still a pass . Obviously I’m not talking About new installations. Any feedback would be great

  • @Ibrehas
    @Ibrehas2 ай бұрын

    Would you have to test for continuity before carrying out a insulation resistance test?

  • @liamleach7161
    @liamleach71613 жыл бұрын

    Why bother turning the outlets to the on position?

  • @GSHElectrical

    @GSHElectrical

    3 жыл бұрын

    So the insulation resistance gets to the front of the socket outlets (IR test with all switches on). Thanks for commenting. Gaz 🦾

  • @user-ny5be4lm8z
    @user-ny5be4lm8z2 жыл бұрын

    999 likes

  • @GSHElectrical

    @GSHElectrical

    2 жыл бұрын

    Thanks 👍🏻

  • @daverose4774
    @daverose4774 Жыл бұрын

    Love watching your videos Much better than artisan Good job lads

  • @GSHElectrical

    @GSHElectrical

    Жыл бұрын

    Massive thanks for the support 👍🏻

  • @daverose4774

    @daverose4774

    Жыл бұрын

    All the best mate keep up the good work . Your really helping a lot of lads realise their dreams

  • @LipsCollide
    @LipsCollide Жыл бұрын

    It's megohms not "megaohms"..

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