Fault finding on a Ring Final Circuit using R1+R2 & R1+RN, the only way to prove polarity AM2 AM2S

Hello and welcome to my video on Fault finding a ring final circuit using R1+R2 and R1+RN, which is the correct way to prove polarity.

In this video I talk you through testing end to ends on the ring to prove you have a ring to start with, how to check your r1 and rn are within tolerance, which would show you if you had a poor termination, before finally checking the r2 value if you have twin and earth, using the ratio of 2.5/1.5 = 1.67 times smaller.

I then show you why we connect into a figure of eight, and then create a table to show you how you can prove the fault, before removing the socket and how you can check polarity at the same time.

This will save you valuable time when you are fault finding in the AM2, or at work.

I hope this video is useful and as always, please like, share, and subscribe to get these important messages out there.

Take care

Adrian

[davidclarke]

From a recently retired industrial electrician of 50 years i thought your run through of testing a final ring circuit was spot on mate

[MarcCarter-sohh]

I'm not an electrician, I just have an interest in learning anything and everything. This was so well explained and laid out. I understood it straight away. This is the 3rd or 4th video I have watched regarding ring circuits and only with this one did I get that 'light bulb' moment. Thank you for your effort.

[sabudjed]

Thanks, brother, for this great explanation.

[persian_warrior]

excellent video, I am having a problem with ring main. I watched this one and the one before, so I know where to start and how easier find the issue.
many thanks ❤❤❤❤

[christopherhiggins]

Excellent video. I've got my AM2 coming up in the a few weeks and this really helped to explain what is expected. So glad people like yourself take the time to create content as informative as this for revision. Thank you.

[gcelec]

Very good delivery of information. Precise concise short and simple to understand. Thanks

[steveday]

Great Video, I recently took the 2365 L3 (I was an Electrician years a go and retuned to it back in 2017 and wanted to update all my qualifications and possibly get a Gold card) Whilst the L3 course had a lot of fault finding on the practical there was only a little on the theory or approach and that was in a slightly different way! They really need to add this video to their course as soon as I saw this everything they taught made complete sense (and it did not at the time)! Whilst I know how to fault find and fix Rings etc I am always looking for additional ways of solving problems and this was just brilliant. Every Apprentice should watch this.

Also I completed a Domestic installers course (No fault finding taught at all) and then went on to complete the 2365 L2 & L3 and they did not show R1+Rn testing on any of them. I only tested R1 & Rn when I took the 2391-52 course, but could not understand why this was not taught at the more basic levels. When I did start testing R1+Rn on my 2365 L2 course the instructor told me I did not need to do it for the course! (It was more about completing all the tasks within the time).

[danieldean]

Thank you for your advice, I would of never got through my college without you. God bless and hopefully one day I'll get to buy you a pint 👌

[TheSockWomble]

Very well presented well done. I am not an electrician I trained on electronics C&G 224 parts 1 and 2 TV / Radio and control systems we did the lot digital and analogue . Worked as a fire alarm commissioning engineer for many years and as an apprentice my mentor told me to always remember 1 leg of 1.5mm cable is approximately 12 ohms (11.86 rounded up) Long ring circuits to you loops to us 😂 . They could be anything up to 1.5km so 18 ohms per leg. Used to use 1.2 ohms per 100m run for tracking down shorts to earth and more than a few times I was spot on and got the nickname the earth fault kid. Miss my mentor he passed away a few years ago what a top bloke taught me so much. Great to see you using maths and readings to assist fault finding all makes perfect sense to me well done.👏

[timothymack]

Thanks Adrian, Brilliant video. Has really helped me visualise the Figure of 8 and appreciate how the R1+RN test is critical to proving polarity and its role in facilitating initial verification fault finding. Top level content sir!

[sergiu.obrijanu]

Keep up the good work mate! Really appreciate your effort and time spent on these videos. I wish I had you as a tutor, even so I managed to learn so many things from your videos.

[basharuk]

Thank you to uploading this kind of video with great explanation of fault finding and reverse polarity .

[aliahmadi]

Many thanks for your valuable time to give all this good information to us really help me to understand better 🙏🏻🙏🏻🙏🏻

[danlakh]

It’s wonderful to have someone like you taking your time and uploading them thank you Adrian . I will have my am2 exam in few weeks time, so can I ask you about short circuit faults please, I was told that on the am2 exam the short circuit is only between live conductors not earth. Does that mean the fault is only between lives never lives to earth? Appreciate your help in advance

[ia]

Excellent video here. Keep the testing/fault finding videos coming please.

[Woodkin]

You can tell when a teacher actually understands what he's talking about rather than just memorising the patter.

[VXSy]

This video is perfect! I’m glad I’ve found it! Subbed

[amd]

Great information Arrian Thank you I have my 2391 next week so going over all test on YouTube

[chriss]

well explained video with good solid reasoning and explanation, just a couple of points, neutral IS a live conductor as is the LINE, it is fundamentally incorrect to call the brown wire the live conductor because the neutral is also a live conductor, it should always be line and neutral, also electrons absolutely DO NOT flow around the circuit, the current does but not the electrons, you could refer to circuit continuity in the Line (or Neutral or cpc) conductor or the particular figure 8 you have connected. I believe it is important to get all new apprentices and new electricians to use the correct terminology, on the bright side I was please to hear you refer to a "ring final circuit" and not the more usual and incorrect term "ring main"

[JohnBond-kb]

Excellent video very helpful many thanks please keep these videos coming