Your commitment to learners is a great example Adrian. I hope they appreciate it ! The preparation involved for delivering a session is crazy , the administration afterwards ( formatives , feedback, tracking, reports etc) is a nightmare and yet just one small thank you , or the look on a learner’s face when “they get it “ makes it all worthwhile. Have directed many learners to your channel, very positive feedback 👍 thanks for the time and effort in posting great content.
Thank you for taking the time to record this, Adrian. Whilst I’m right at the beginning of my journey (midway through L2), I was able to follow and understand everything you covered here - awesome content 👏🏻
Great video. Got AM2s Monday and needed a refresher on correct testing order. Would still recommend testing RCD's and Zdbs+PFC, before doing ZS testing just to confirm incoming is safe and protective devices are working before energising a board. Thanks for your videos
As an experienced electrician doing the AM2 as part of my NVQ level 3 (To gain my gold card) I have to say this is probably the best video on inspection & testing I've watched ! even with being experienced there was one or two thinks I've brushed up on, Thanks for the video Adrian and keep up the good work its clear to see you have a knack for explaining complex subjects such as inspection and testing in a clear and concise way.
This video is gold. I watched on 1.5x but the information is absolutely amazing. Makes me enjoy learning again and reminding me of lots of things that you stop thinking about while you work. Thanks Adrian.
Another fanstastic video Adrian. I’ve got my AM2 in less than two weeks and your videos are helping me so much. Thank you for taking the time to share your knowledge.
@@Pure_electrical_training When doing R1+R2 testing on a heating switch which has a parallel path [extra earth in it] do we disconnect the parallel parth and do the test between the cpc and the live or the parallel path remains connected to the switch while we do the test between the live and the cpc? Please share your thoughts thank you.
Fantastic Adrian - AM2 next week and this was a brilliant piece of education to ensure my knowledge is on track and not to do what we do on site!! I appreciate the amount of work that went into this mammoth video - Guys watch it all - dont skip.
Thank you so much for the positive feedback 🙏 And good luck in your AM2 🤞 Have you seen my AM2 Facebook group? Keep me posted and please take the time to fill out my AM2 feedback form and let me know about your experience👌 docs.google.com/forms/d/1WIZjQIOE9BStb1jur3cJQX39QiClJ6f2XKykrkNC7Pg/edit
Thank you so much for sharing this and laying it out in a way that can be understood. I haven’t found anything else like this on you in such depth. Thank you. Attempt 2 of the AM2 is tomorrow :)
I highly appreciate you making these videos, it may appear long and boring if you just look at the thumbnail but this is really straight to the point when covering key topics. If all teachers were as good as you are at explaining things we’d have a great workforce in the industry. Thanks Adrian
Great video Adrian, pretty sure when I did my AM2 I had to demonstrate the ethernet test for the data circuit. It was just the standard pair test, it didn't need documenting anywhere but the examiner needed to see it being done. Might be worth mentioning in the video too. Keep up the good work and great content.
@@Pure_electrical_training Is there anything you suggest I focus on? Can you share your experience with the am2 and what I should prepare myself for.? Thanks
Hi Adrian, I’ve been watching through a number of your videos and they’ve been a great help. Bob Noseda referred me as I have a few questions that you might be able to help with. Cheers!
At the begging of the video you said that without reading the GN3 there are remote chances of passing the testing and inspection and I am trying to understand how is exactly this working. I will have my AM2s soon . From what I understand if you know how to do the tests and the sequences of it you don't really need to follow the GN3 . Even if you need to follow it you go at page 33 and follow from there on. I am just trying to understand why is very important to read the GN3 prior to the AM2s . Thank you !
Hi Adrian , I recently subscribed as I am super impressed by your teaching style. So much detailed information in a calm and methodical manner, I also love your real world examples. I am am working towards taking my AM2S, I just ordered The City & Guilds Textbook:Book 2 Electrical Installations do you think I should get Book 1 also or is everything in book 1 covered in book 2 ? Looking forward to watching all your videos many thanks for your help🙂
Thank you so much 🤗 If you are taking the AM2S, you must be on an apprenticeship. Book 1 covers year 1 and part of year 2 of an apprenticeship, and book 2 covers part of year 2 and year 3. Book 1 Health and safety 1st year science and principles Practical installation Small amount of inspection and testing Small amount of electrical design and people within the industry Book 2 Renewables 2nd year science and principles More design and people within the industry More in-depth inspection and testing
I am not very observant! you do use type A ( the RCBOs ) . I was just talking about the split boards. I got confused because in France and Spain they use to have split fuse boards with a type AC and a type A for specific circuits. I got the guidance note 3 and I am studying hard. I got an old multifunction fluke to keep going for now. In france and spain the electricians do not do test and inspection, when you finish the installation you take a couple of measures if you want and go home. You call the ' CONSUEL' in france to come and check the installation, and not allways, when you change your meter for example.. just the basic checks and the guys are not even electricians , they have a very specific training for doing this few measures. I used to do whole large commercial on my own when I moved to a rural area in france so when I came to UK I was very surprise, I could not do much, I didnt know how to do proper testing, I only knew the TT system the only one in france, I was use to all pvc materials , I mean all is pvc ! , a funny thing is that we do not do bends in france hahaha we put flex inside conduit and leave it exposed in the bends , the conduit is just a mean of installation ,not really protection. Of course I am not talking about super installations as a big train station or so, that is different ...and also the regulations in france are actually just a guide, well more or less, everything is so harmonised that you always do the same, I understand now why , in UK you have all this historic big houses, millions with old ( but very good) electrical installations that need to be well checked, anyway........so I started from the beginning here. I met some british electricians in france on sites doing other non electrical jobs and I used to tell them: come on man! you come with me and I get you a job right now and they didnt want to , I met a couple of them..and now I understand why , because they thought the electrics in france were as complex as in UK or rather they thought to be electrican in france you needed the same competences as in UK. I didnt understand why they were shy because they had worst jobs and my company was looking for experienced electricians. I miss the cheese and the bread..ok merci encore Adrian bie ( sorry! very long).
hola, muchas gracias. Thank you very much I was quite lost and I will have my exam soon. I have some industrial experience. I was thinking today why in the consumer units in UK you dont use type A RCDs since the increase of electronic devices that can trip the normal RCDs. I like to share my modest electrical knowledge with anyone me too but is a bit limited., not enough to put a video but if I learn something unusual I really like sharing what I know. You videos are of high quality, very often I find some other electrician's videos a non interesting.Cheers.
on the AM2 at the heating spur do we remove the wires from the central heating block and put them in wagos then carry out an insulation resistance test.
Another fantastic video. Thankyou - Could I ask when you were proving ADS, you chose a 32A type C and gave a max disconnection of 5s where this would be applicable, I'm trying to get my head around that and struggling. (edit - that's a distribution circuit isn't it?) As the others have said also, the lightbulb has come on in so many area's when watching this video, I'm a sparky of 30+ years and the info here is gold, and really underpins things we do day to day. many thanks
Thank you so much for the amazing feedback 🤗 When you say that you are trying to get your head around the type C 32A RCBO, which bit exactly? Yes, 5s is distribution. Did I say that being an RCBO it covers 0.4 and 5s in the video, or did I just say 5s? It all depends on the circuit 👍
@@Pure_electrical_training I think you just said 5's, but it matters not like you said - but it got me looking closer which is possibly what the intention was LOL. I was trying to understand why the C32 coming from a consumer unit being looked at as a distribution circuit, I was making the assumption that all circuits leaving a consumer unit would be a final circuit, but there is nothing to say that you couldn't have a 3 phase board feeding different consumer units I suppose.
Adrian, thank you for the response. Your commitment to training is awesome, this is a 2 year old video, and you are still responding to questions. I have my AM2E in 10 days, so I'm crossing the T's and dotting the I's. Thanks again
when doing the live tests do you start with confirming supply polarity ? and for that is that the phase sequence tests or do you need to use a proving unit with a voltage indicator ?
Follow guidance notes 3 and you cannot go wrong. You need either a voltage indicator that can show phase rotation, like the TIS 859 or a dedicated 3 wire phase rotation meter 👍
thanks adrain for all your hard work used all your videos for the am2 support. i am pretty clear on zs, when you described it for me when you talked about zs measured for me you were talking about zs calculated, which was zs= ze + R1+R2. I'm confused about measured zs on the actual day: for the heating (are we just going upto the fused spur) and for the 3 phase socket, is there an adaptor plug available ? According to your understanding its all calculated zs, no actual measurements with live testing with the tester. Thanks again adrian much appreciated.
My advice to our apprentices is that, on the day you will get a copy of BS7671, OSG and GN3 to follow. What does it say in GN3 under insulation resistance? If you follow GN3 you cannot go wrong
Am2s in the morning what circuits will I be carrying out tests on? Is there a 3 phase DOL motor i can’t get my head around how I would test it and record my results on the test sheet. Any help would be greatly appreciated
Hi Adrian, you must be exhausted after that 😀 Thank you for your generosity - I learned a lot. As always, I have a few points I would ask you to clarify please. I got rather confused on the Ring FC testing. a) I think you just made a mistake when you said end to end ohms were 0.2 but then you calculated R1:R2 as 0.01 instead of 0.1 You also put these figs in the test schedule. b) What I really didn't understand was you said that once you calculate the R1:R2 you should confirm the fig. at all sockets and C.U. How can you do that? the ohm meter will always give a reading of R1:R2 x 4 at all points (assuming the figure of 8 linkage) c) As for the spur - I would suggest that all you can do is to record the Increase in resistance from the std socket on the ring. Then add the increase in resistance (undivided) to the calculated R1:R2. It might be worth explaining that the R1:R2 for Rings is different to that of radials in that that it is only a theoretical concept used for testing to confirm the integrity of the ring. The true R1:R2 value will vary at each point depending on the lengths of the 2 conductors (in parallel) connecting the socket to the C.U.. (as shown by live Zs testing) But that another story. d) On Zs - I missed any mention of C(max) correction factor 95%. But is see that this is already built into the tabulated Max Zs value. Also, I may be a stubborn old fool, but I don't understand why we can't insert the Max permitted Zs value WITH thermal correction, into the test schedule. This would make more sense and make it easier for less well trained people to at least read and make sense of the test sheet. If correction factors change in the future, how will the reader know which factors were applicable at the time of testing. Just seems ridiculous to me. e) Re disconnection times - you gave the impression that a 32A breaker needed to trip within 5 secs. Surely; as it's not a distribution circuit, the required max trip time is 0.4 secs. on a TN supply. f) Finally 😀 Just a suggestion to help learners - you mentioned Doubling the Pfc test result on 3 phase supplies to give the value to be recorded. I just thought some learners may not understand why. You could say that doubling is an easy approximation of multiplying by the square root of 3 and this is necessary because the voltage between phases is much higher than between one phase and earth (measured). Therefore the current pushed through the cabling will be much higher. Also why we don't do loop impedance between phases. I hope you can put me back on track where I have gone wrong and that I may have helped in some areas re the perception. Thanks again.
Thank you for such a detailed and thorough response 🤝 This might help with RFC testing ruclips.net/video/chCykzbVUqM/видео.html. I’ll have to watch the video again to answer
@@Pure_electrical_training Yes I just watched yr vid on RFC testing. That's pretty much how I understood it too. I guess the reason for the discrepancy when testing all points with fig of 8, is all down to the higher resistance of the cpc. Imagine a socket right next to the C.U. The 2 paths for the electrons to follow will be of equal length but NOT of equal resistance. One will be almost entirely 2.5mm and the other almost entirely 1.5mm. Whereas a socket at the mid-point will have paths of equal length AND equal resistance.
Further to my last comment - I just constructed a spreadsheet to calculate the variance in test results with fig. of 8. Assuming end to end of R1 = 3 ohms and R2 = 5 ohms A socket placed only 10% of way round ring will give "R1:R2" of 1.92 ohms. A socket at the centre of the ring will give 2.0 ohms. I can send you spreadsheet if you wish.
I have to do a resit next week and I am not sure on a few things. On the electrical certificate do i tick new installation or additional to an existing installation ?Plus I remember when I did the Ze test, the result was 0.78, that’s above the 0.54 allowed for a type c RCD. I have been told to write on the remarks that the ring is above the Zs permitted but it will meet the standard as it states on table 41.5 as the maximum for rcbo is 1.667 ohms. Is that correct. ?
I guess the question is, have you technically installed a new installation, or added in new circuits to an already existing installation? You are correct about the 1667 ohms
When writing the sizes of my line and CPC conductors on the schedule of test results, I'm unsure what to write when the cable I have used from the distribution board is SWA using the armour as the earthing conductor. Do I just write the size of the CPC fly lead I have used from the banjo or do I need to calculate the equivalent size of the armour?
That is a very good question. The cable manufacturer should make is a size chart comparing the armour of SWA to the equivalent CPC size. www.dungannonelectrical.co.uk/dun1-shop/pdf/cable/SWA.pdf Or you can use the adiabatic professional-electrician.com/technical/armouring-of-a-cable-as-a-protective-conductor/
@@Pure_electrical_training Thank you! I'm thinking of then just writing the CSA which from that table is 20mm, then writing SWA used for CPC conductor in the remarks section. Hopefully that is acceptable 🤞
Hi Adrian I'm doing level 2 2365. I have watched your video to see the route through to becoming an electrician. I have been a site carpenter for 30 years but have always fancied becoming an electrician. Is the option open to me to go self employed as an electrician when I have completed level 3 and took my 18th edition and test and inspection. I would appreciate your opinion John
Good evening John, it depends on whether or not you need to be registered with a competent person scheme. The entry requirements have changed, and you currently need the NVQ and AM2
with nulling the leads when doing an insulation resistance test i thought it wasnt needed as the value youre looking for when doing an IS test should be so high that the reistance of the leads wouldnt matter ?
You don’t need to null the leads when doing an insulation resistance test, but you do need to prove the meter is working by testing the leads apart (you should get no reading >499) and then leads together (should get 0.00 ohms) You shouldn’t proceed until you have proved your meter, otherwise you might not be even testing
its fairly obvious that you are a trainer/ teacher of new aspiring electricians both the teenagers and old relics like me. where can I contact you for advice on training ?
@@Pure_electrical_training I understand that Apprenticeship is the route to go and as an old family man looking after the family I need to search a place where I can realistically find a part time or full time apprenticeship as a middle age mature student and I have set myself a 5 year target to give it a full go and get it done before I throw the towel and go back to my current field of accounting which pays the bills but is uncertain and doesn't offer any flexibility or control from you sir, for a start I like to know the books you recommend that I should buy and start reading while I look for a miracle apprenticeship offer to take a specific course from recommended institution to attend in parallel while I look for apprenticeship and demonstrate to the employer that I am already committed and not entirely unschooled in the subject. and Finally and most Importantly, find out if you do any classes at all? which I can join online or in person? or maybe structure a video series of a technical material made by yourself and make it a pay to view content?
All my help is free, all I need is time 😂 If you go to night school and complete the CG 2365 two nights a week over 3 years, you can get all the knowledge based units completed, and then you can gain employment and fill out the work based units (nvq) The powers that be are taking about bringing out a 2 year domestic apprenticeship next year, that contains EV, PV etc If you were that way inclined it might be worth waiting for that
@@Pure_electrical_training bless you mate. I will wait to see what's on offer next year but will start self study and follow your videos to see if I can relate to those topics. re CG 2365 recommendation I understand you mean both level 2 and level3? is there no level1? I know, nothing can replace practical experience and I need to work hard to secure a place.
@@Mirpurmad I think if you are an adult learner , you don’t need to do the lvl 1, I may be wrong on this.Im hoping to retrain at night school my college is offering the diploma level 2 then level 3, think it’s 4 years total, but I’m sure after that I’ve got to do a portfolio and work along side a sparky to gain this , then after that I think you can register wit napit/niceic etc
Hi Adrian. When you test R1+R2 method 1 for any radial circuit, do I need to disconnect the earthing and bonding conductor before I link Line conductor to Earth bar? thank you.
@@Pure_electrical_training No no, was just a personal bookmark for myself. Think I put it there for the live testing. Doing my am2 atm, just completed the testing today. Thanks so much for these materials - they've really helped give me some confidence
sitting my AM2 next week and needed to brush up. BEAUTIFUL video. AMAZING video. 2 hours for a reason nice and detailed 10/10
Thank you so much 🤗
Your commitment to learners is a great example Adrian. I hope they appreciate it ! The preparation involved for delivering a session is crazy , the administration afterwards ( formatives , feedback, tracking, reports etc) is a nightmare and yet just one small thank you , or the look on a learner’s face when “they get it “ makes it all worthwhile. Have directed many learners to your channel, very positive feedback 👍 thanks for the time and effort in posting great content.
Thank you so much 🤗
Thank you for taking the time to record this, Adrian. Whilst I’m right at the beginning of my journey (midway through L2), I was able to follow and understand everything you covered here - awesome content 👏🏻
Brilliant job well done. Loved listening to you lately on Fix radio
Great video. Got AM2s Monday and needed a refresher on correct testing order. Would still recommend testing RCD's and Zdbs+PFC, before doing ZS testing just to confirm incoming is safe and protective devices are working before energising a board. Thanks for your videos
You are welcome 💪
As an experienced electrician doing the AM2 as part of my NVQ level 3 (To gain my gold card) I have to say this is probably the best video on inspection & testing I've watched ! even with being experienced there was one or two thinks I've brushed up on, Thanks for the video Adrian and keep up the good work its clear to see you have a knack for explaining complex subjects such as inspection and testing in a clear and concise way.
Thank you very much Peter 🤗
This video is gold. I watched on 1.5x but the information is absolutely amazing. Makes me enjoy learning again and reminding me of lots of things that you stop thinking about while you work. Thanks Adrian.
I’m glad it’s been of some use to you, it’s comments like these that make it all worth while, so thank you 🤗
Another fanstastic video Adrian. I’ve got my AM2 in less than two weeks and your videos are helping me so much. Thank you for taking the time to share your knowledge.
You are more than welcome 🤗
@@Pure_electrical_training When doing R1+R2 testing on a heating switch which has a parallel path [extra earth in it] do we disconnect the parallel parth and do the test between the cpc and the live or the parallel path remains connected to the switch while we do the test between the live and the cpc? Please share your thoughts thank you.
Fantastic Adrian - AM2 next week and this was a brilliant piece of education to ensure my knowledge is on track and not to do what we do on site!!
I appreciate the amount of work that went into this mammoth video - Guys watch it all - dont skip.
Thank you so much for the positive feedback 🙏
And good luck in your AM2 🤞
Have you seen my AM2 Facebook group?
Keep me posted and please take the time to fill out my AM2 feedback form and let me know about your experience👌
docs.google.com/forms/d/1WIZjQIOE9BStb1jur3cJQX39QiClJ6f2XKykrkNC7Pg/edit
Thank you so much for sharing this and laying it out in a way that can be understood. I haven’t found anything else like this on you in such depth. Thank you. Attempt 2 of the AM2 is tomorrow :)
You are more than welcome 🙏
Have you seen my AM2 Facebook group?
facebook.com/groups/564389841900177/?ref=share
This is a really thorough & well delivered video. Its like my old college days. Excellent. Look forward to more material.
Thank you 🤗
I highly appreciate you making these videos, it may appear long and boring if you just look at the thumbnail but this is really straight to the point when covering key topics. If all teachers were as good as you are at explaining things we’d have a great workforce in the industry. Thanks Adrian
Thank you for your kind words
Incredible video helped so much. Thank you for taking the time to record this.
You are more than welcome 🤝
Superb video and nice breadown and explanations
Thank you 🙏
Fantastic lesson.
And a fantastic video as always mate.
Thank you
You are more than welcome 🤝
Great video Adrian, pretty sure when I did my AM2 I had to demonstrate the ethernet test for the data circuit. It was just the standard pair test, it didn't need documenting anywhere but the examiner needed to see it being done. Might be worth mentioning in the video too. Keep up the good work and great content.
awesome video Adrian! about to sit my am2 in 2weeks and this really help with note making and trying to be thorough !
Good luck
wow! great help. so much detail & a good explanation of each section really appreciate the help!
You are very welcome 🤝🤗
Looking forward to sitting down to this later. Thanks for your help
You are more than welcome 🙌
Thanks for this It's really helpful and enjoyable. Your clearly a great teacher so thanks a lot for the effort
Thank you 🤗
Thanks again Adrian I sat the AM2, just wanted to feedback we did do one zs on the ring final circuit, the rest was by calculation.
Thank you for the feedback Will 🙏
Amazing how net can make something so simple and basic so complicated
Just like to to say thank you very much, very clear and concise. With my AM2 coming up very soon this has given me great confidence. Fantastic.
You are more than welcome 🤝
@@Pure_electrical_training Is there anything you suggest I focus on? Can you share your experience with the am2 and what I should prepare myself for.? Thanks
such a great series... what a legend
Great video thanks for all the help!
You are more than welcome 🤝
Thanks Adrian, great video and clear explanation ...
This is pretty amazing! Nice one matey
Brilliant video as always🙌appreciate it so much
Thank you, you are welcome
Thank you very much indeed. That was very helpful. appreciated really :)
Hi Adrian, I’ve been watching through a number of your videos and they’ve been a great help.
Bob Noseda referred me as I have a few questions that you might be able to help with.
Cheers!
Good afternoon George,
Thank you for getting in touch, what can I help you with?
I think I need to bite the bullet and by a multifunction tester, as I just never seem to put anything into actual practise. Great video
Doing level 2.
Good channel
Thank you 🙏
At the begging of the video you said that without reading the GN3 there are remote chances of passing the testing and inspection and I am trying to understand how is exactly this working. I will have my AM2s soon . From what I understand if you know how to do the tests and the sequences of it you don't really need to follow the GN3 . Even if you need to follow it you go at page 33 and follow from there on. I am just trying to understand why is very important to read the GN3 prior to the AM2s . Thank you !
Well done mate really appreciate
You are more than welcome 🤝
Hi Adrian , I recently subscribed as I am super impressed by your teaching style.
So much detailed information in a calm and methodical manner, I also love your real world examples. I am am working towards taking my AM2S, I just ordered
The City & Guilds Textbook:Book 2 Electrical Installations do you think I should get Book 1 also or is everything in book 1 covered in book 2 ?
Looking forward to watching all your videos many thanks for your help🙂
Thank you so much 🤗
If you are taking the AM2S, you must be on an apprenticeship.
Book 1 covers year 1 and part of year 2 of an apprenticeship, and book 2 covers part of year 2 and year 3.
Book 1
Health and safety
1st year science and principles
Practical installation
Small amount of inspection and testing
Small amount of electrical design and people within the industry
Book 2
Renewables
2nd year science and principles
More design and people within the industry
More in-depth inspection and testing
@@Pure_electrical_training Thanks for your reply much appreciated.
Class video Adrian,thank you. Have you got more videos about the conduit install coming up? 👍🏻
Check out GSH electrical as he already has loads 👌
To quote Alan Partridge..." That is superb...that is first class..."
Thank you 🤗
am2 next week. terrified
I am not very observant! you do use type A ( the RCBOs ) . I was just talking about the split boards. I got confused because in France and Spain they use to have split fuse boards with a type AC and a type A for specific circuits.
I got the guidance note 3 and I am studying hard. I got an old multifunction fluke to keep going for now. In france and spain the electricians do not do test and inspection, when you finish the installation you take a couple of measures if you want and go home. You call the ' CONSUEL' in france to come and check the installation, and not allways, when you change your meter for example.. just the basic checks and the guys are not even electricians , they have a very specific training for doing this few measures. I used to do whole large commercial on my own when I moved to a rural area in france so when I came to UK I was very surprise, I could not do much, I didnt know how to do proper testing, I only knew the TT system the only one in france, I was use to all pvc materials , I mean all is pvc ! , a funny thing is that we do not do bends in france hahaha we put flex inside conduit and leave it exposed in the bends , the conduit is just a mean of installation ,not really protection. Of course I am not talking about super installations as a big train station or so, that is different ...and also the regulations in france are actually just a guide, well more or less, everything is so harmonised that you always do the same, I understand now why , in UK you have all this historic big houses, millions with old ( but very good) electrical installations that need to be well checked, anyway........so I started from the beginning here. I met some british electricians in france on sites doing other non electrical jobs and I used to tell them: come on man! you come with me and I get you a job right now and they didnt want to , I met a couple of them..and now I understand why , because they thought the electrics in france were as complex as in UK or rather they thought to be electrican in france you needed the same competences as in UK. I didnt understand why they were shy because they had worst jobs and my company was looking for experienced electricians. I miss the cheese and the bread..ok merci encore Adrian bie ( sorry! very long).
hola, muchas gracias. Thank you very much I was quite lost and I will have my exam soon. I have some industrial experience. I was thinking today why in the consumer units in UK you dont use type A RCDs since the increase of electronic devices that can trip the normal RCDs. I like to share my modest electrical knowledge with anyone me too but is a bit limited., not enough to put a video but if I learn something unusual I really like sharing what I know. You videos are of high quality, very often I find some other electrician's videos a non interesting.Cheers.
Thank you 🤗
on the AM2 at the heating spur do we remove the wires from the central heating block and put them in wagos then carry out an insulation resistance test.
No, just switch the switched-fused spur off
Another fantastic video. Thankyou - Could I ask when you were proving ADS, you chose a 32A type C and gave a max disconnection of 5s where this would be applicable, I'm trying to get my head around that and struggling. (edit - that's a distribution circuit isn't it?)
As the others have said also, the lightbulb has come on in so many area's when watching this video, I'm a sparky of 30+ years and the info here is gold, and really underpins things we do day to day. many thanks
Thank you so much for the amazing feedback 🤗
When you say that you are trying to get your head around the type C 32A RCBO, which bit exactly?
Yes, 5s is distribution. Did I say that being an RCBO it covers 0.4 and 5s in the video, or did I just say 5s?
It all depends on the circuit 👍
@@Pure_electrical_training I think you just said 5's, but it matters not like you said - but it got me looking closer which is possibly what the intention was LOL. I was trying to understand why the C32 coming from a consumer unit being looked at as a distribution circuit, I was making the assumption that all circuits leaving a consumer unit would be a final circuit, but there is nothing to say that you couldn't have a 3 phase board feeding different consumer units I suppose.
With regards to R1+R2 and IR on the s plan, should we just test from the DB to the sfs or should we test past the sfs also? Thanks!!
To the SFS only
Adrian, thank you for the response. Your commitment to training is awesome, this is a 2 year old video, and you are still responding to questions. I have my AM2E in 10 days, so I'm crossing the T's and dotting the I's. Thanks again
when doing the live tests do you start with confirming supply polarity ? and for that is that the phase sequence tests or do you need to use a proving unit with a voltage indicator ?
Follow guidance notes 3 and you cannot go wrong.
You need either a voltage indicator that can show phase rotation, like the TIS 859 or a dedicated 3 wire phase rotation meter 👍
So when calculating ZS do we use the ZSDB we measure or ZE they give us?
They will give you a figure to work with, as most likely, the Zdb will be too high as it’s not connected to a distribution circuit.
Great video, can I take the guidance notes 3 into the am2?
They supply you with it 👍
thanks adrain for all your hard work used all your videos for the am2 support. i am pretty clear on zs, when you described it for me when you talked about zs measured for me you were talking about zs calculated, which was zs= ze + R1+R2. I'm confused about measured zs on the actual day: for the heating (are we just going upto the fused spur) and for the 3 phase socket, is there an adaptor plug available ? According to your understanding its all calculated zs, no actual measurements with live testing with the tester.
Thanks again adrian much appreciated.
You won’t measure it on the day as they want you to calculate it.
Follow the spec for everything else
@@Pure_electrical_training thanks Adrian
Great vid. 1 question:
For IR, do you need to remove/disconnect fuses from switched and unswitched FCUs?
My advice to our apprentices is that, on the day you will get a copy of BS7671, OSG and GN3 to follow.
What does it say in GN3 under insulation resistance?
If you follow GN3 you cannot go wrong
@@Pure_electrical_training 👍
Am2s in the morning what circuits will I be carrying out tests on? Is there a 3 phase DOL motor i can’t get my head around how I would test it and record my results on the test sheet. Any help would be greatly appreciated
Hi Adrian, you must be exhausted after that 😀 Thank you for your generosity - I learned a lot.
As always, I have a few points I would ask you to clarify please.
I got rather confused on the Ring FC testing.
a) I think you just made a mistake when you said end to end ohms were 0.2 but then you calculated R1:R2 as 0.01 instead of 0.1 You also put these figs in the test schedule.
b) What I really didn't understand was you said that once you calculate the R1:R2 you should confirm the fig. at all sockets and C.U. How can you do that? the ohm meter will always give a reading of R1:R2 x 4 at all points (assuming the figure of 8 linkage)
c) As for the spur - I would suggest that all you can do is to record the Increase in resistance from the std socket on the ring. Then add the increase in resistance (undivided) to the calculated R1:R2.
It might be worth explaining that the R1:R2 for Rings is different to that of radials in that that it is only a theoretical concept used for testing to confirm the integrity of the ring. The true R1:R2 value will vary at each point depending on the lengths of the 2 conductors (in parallel) connecting the socket to the C.U.. (as shown by live Zs testing) But that another story.
d) On Zs - I missed any mention of C(max) correction factor 95%. But is see that this is already built into the tabulated Max Zs value. Also, I may be a stubborn old fool, but I don't understand why we can't insert the Max permitted Zs value WITH thermal correction, into the test schedule. This would make more sense and make it easier for less well trained people to at least read and make sense of the test sheet. If correction factors change in the future, how will the reader know which factors were applicable at the time of testing. Just seems ridiculous to me.
e) Re disconnection times - you gave the impression that a 32A breaker needed to trip within 5 secs. Surely; as it's not a distribution circuit, the required max trip time is 0.4 secs. on a TN supply.
f) Finally 😀 Just a suggestion to help learners - you mentioned Doubling the Pfc test result on 3 phase supplies to give the value to be recorded. I just thought some learners may not understand why. You could say that doubling is an easy approximation of multiplying by the square root of 3 and this is necessary because the voltage between phases is much higher than between one phase and earth (measured). Therefore the current pushed through the cabling will be much higher. Also why we don't do loop impedance between phases.
I hope you can put me back on track where I have gone wrong and that I may have helped in some areas re the perception. Thanks again.
Thank you for such a detailed and thorough response 🤝
This might help with RFC testing ruclips.net/video/chCykzbVUqM/видео.html.
I’ll have to watch the video again to answer
@@Pure_electrical_training Yes I just watched yr vid on RFC testing. That's pretty much how I understood it too. I guess the reason for the discrepancy when testing all points with fig of 8, is all down to the higher resistance of the cpc. Imagine a socket right next to the C.U. The 2 paths for the electrons to follow will be of equal length but NOT of equal resistance. One will be almost entirely 2.5mm and the other almost entirely 1.5mm. Whereas a socket at the mid-point will have paths of equal length AND equal resistance.
Further to my last comment - I just constructed a spreadsheet to calculate the variance in test results with fig. of 8. Assuming end to end of R1 = 3 ohms and R2 = 5 ohms A socket placed only 10% of way round ring will give "R1:R2" of 1.92 ohms. A socket at the centre of the ring will give 2.0 ohms. I can send you spreadsheet if you wish.
Do you need to test phase rotation anywhere else other than the incoming supply such as the 3 phase and neutral or anything at the motor
Once you have proved the supply phase rotation coming into the building, you would have proved polarity by R1+R2
I have to do a resit next week and I am not sure on a few things. On the electrical certificate do i tick new installation or additional to an existing installation ?Plus I remember when I did the Ze test, the result was 0.78, that’s above the 0.54 allowed for a type c RCD. I have been told to write on the remarks that the ring is above the Zs permitted but it will meet the standard as it states on table 41.5 as the maximum for rcbo is 1.667 ohms. Is that correct. ?
I guess the question is, have you technically installed a new installation, or added in new circuits to an already existing installation?
You are correct about the 1667 ohms
Thanks for your help, much appreciated
Hello Adrian kindly do you have the PDF file for IET guidance note 3: inspection and testing 18th wiring BS 7671
Do you mean the schedule of test results that I created and use in the video?
When writing the sizes of my line and CPC conductors on the schedule of test results, I'm unsure what to write when the cable I have used from the distribution board is SWA using the armour as the earthing conductor. Do I just write the size of the CPC fly lead I have used from the banjo or do I need to calculate the equivalent size of the armour?
That is a very good question.
The cable manufacturer should make is a size chart comparing the armour of SWA to the equivalent CPC size.
www.dungannonelectrical.co.uk/dun1-shop/pdf/cable/SWA.pdf
Or you can use the adiabatic
professional-electrician.com/technical/armouring-of-a-cable-as-a-protective-conductor/
@@Pure_electrical_training Thank you! I'm thinking of then just writing the CSA which from that table is 20mm, then writing SWA used for CPC conductor in the remarks section. Hopefully that is acceptable 🤞
it cut out the nominal frequency at 32 mins in, guessing it was meant to say 50hz haha
Hi Adrian
I'm doing level 2 2365. I have watched your video to see the route through to becoming an electrician.
I have been a site carpenter for 30 years but have always fancied becoming an electrician. Is the option open to me to go self employed as an electrician when I have completed level 3 and took my 18th edition and test and inspection.
I would appreciate your opinion
John
Good evening John, it depends on whether or not you need to be registered with a competent person scheme.
The entry requirements have changed, and you currently need the NVQ and AM2
Any advice on the online exam am2?
How well do you know how to use your regs book?
You will be given a copy of BS7671 and a copy of Part P of the building regulations
with nulling the leads when doing an insulation resistance test i thought it wasnt needed as the value youre looking for when doing an IS test should be so high that the reistance of the leads wouldnt matter ?
You don’t need to null the leads when doing an insulation resistance test, but you do need to prove the meter is working by testing the leads apart (you should get no reading >499) and then leads together (should get 0.00 ohms)
You shouldn’t proceed until you have proved your meter, otherwise you might not be even testing
@@Pure_electrical_training ah ok thank you
its fairly obvious that you are a trainer/ teacher of new aspiring electricians both the teenagers and old relics like me.
where can I contact you for advice on training ?
What did you want to know?
@@Pure_electrical_training
I understand that Apprenticeship is the route to go and as an old family man looking after the family I need to search a place where I can realistically find a part time or full time apprenticeship as a middle age mature student and I have set myself a 5 year target to give it a full go and get it done before I throw the towel and go back to my current field of accounting which pays the bills but is uncertain and doesn't offer any flexibility or control
from you sir, for a start I like to know
the books you recommend that I should buy and start reading while I look for a miracle apprenticeship offer
to take a specific course from recommended institution to attend in parallel while I look for apprenticeship and demonstrate to the employer that I am already committed and not entirely unschooled in the subject.
and Finally and most Importantly,
find out if you do any classes at all? which I can join online or in person?
or maybe structure a video series of a technical material made by yourself and make it a pay to view content?
All my help is free, all I need is time 😂
If you go to night school and complete the CG 2365 two nights a week over 3 years, you can get all the knowledge based units completed, and then you can gain employment and fill out the work based units (nvq)
The powers that be are taking about bringing out a 2 year domestic apprenticeship next year, that contains EV, PV etc
If you were that way inclined it might be worth waiting for that
@@Pure_electrical_training bless you mate.
I will wait to see what's on offer next year but will start self study and follow your videos to see if I can relate to those topics.
re CG 2365 recommendation I understand you mean both level 2 and level3?
is there no level1?
I know, nothing can replace practical experience and I need to work hard to secure a place.
@@Mirpurmad I think if you are an adult learner , you don’t need to do the lvl 1, I may be wrong on this.Im hoping to retrain at night school my college is offering the diploma level 2 then level 3, think it’s 4 years total, but I’m sure after that I’ve got to do a portfolio and work along side a sparky to gain this , then after that I think you can register wit napit/niceic etc
Hi Adrian. When you test R1+R2 method 1 for any radial circuit, do I need to disconnect the earthing and bonding conductor before I link Line conductor to Earth bar? thank you.
What does guidance notes 3 tell you, as that is what you will have on the day, and what the assessor will be marking you against. 👌
Adrian if I want the books where can get it?
Which books were you after?
Just to point. Have you made an error. type B breaker with breaking capacity of 10k. Is that supposed to be a type C.
No, Contactum B type RCBO’s used to be 10kA not sure if the still are
@@Pure_electrical_training brilliant thanks for the guidance.
1.26.30 maths = 0.1 Ohms not 0.01 Ohms. Thank you in any case for you vid!
Page 71 is now page 91
I have realised on reflection that I should have not quoted page numbers 😂
1h57
What about it, do you have anything specific?
@@Pure_electrical_training No no, was just a personal bookmark for myself. Think I put it there for the live testing.
Doing my am2 atm, just completed the testing today. Thanks so much for these materials - they've really helped give me some confidence
@@UnimportantAcc You are more than welcome