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2391 - RING CIRCUIT TESTING - RESISTANCE - R1+R2
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- Опубліковано 8 січ 2022
- We’ve had a few requests to explain what sort of “things” an assessor is looking for when they are observing someone carrying out ring circuit tests.
And we’ve also had questions about just what is an R1 plus R2 test and what is the difference between big Rs and little Rs.
So in this video we will look at both of these requests.
We will work our way through the resistance tests for a socket ring circuit and understand why we are doing certain actions at certain times and what results we are expecting. At the same time we will point out the key areas that an assessor is looking at, what an assessor will be expecting to see you do during a practical assessment.
Everybody is nervous when they are being assessed but the assessor is actually on your side. The assessor wants you to pass and in this video we will discuss how you can help that process.
We have over a hundred videos on all aspects of electrical works and to see a full list of all our LearnElectrics videos, click on the link below.
/ @learnelectrics4402
This video is number 111 on our UA-cam channel
You can also view all our videos by typing LearnElectrics all one word into the UA-cam search bar.
Always work safely, electricity can be dangerous. If you are unsure, stop and seek advice.
This video is provided for guidance only. Every electrical situation is different, please check and ensure that you are applying this learning information to your own individual circumstances correctly and safely. If in doubt, stop and seek competent advice.
This is the best series by far - clearly explained. Brilliant.
Glad you think so, thanks for watching. Dave.
As always another excellent video Dave much appreciated all the effort you put into your videos 👍
Thanks Naveed, your comments are really appreciated. Dave.
Hi there. Just wanted to say thanks very much for all your videos and presentations. Im just after achieving my 2391 and your video tutorials were a massive help in my understanding and especially the maths end. Keep up the good work. Thanks again!
Great news that you passed. well done and worth the effort. If the videos helped in a small way then that is great.
Keep learning, its a good trade to be in, it's taken me around the world working. Lots more to come.
Dave.
Great content, for beginners to experienced electricians
Thank you. I appreciate the comments. Dave.
You gave away all the tricks that could be pulled on the exam day or during work situations. Very valuable for safe working.
Happy to help. Thanks for watching and good luck. Dave.
Should be a common practice
Great video again mate...much appreciated. Love the additional advice too
Glad you enjoyed it, thanks for watching.
Superb content again! I got 100% on my 18th edition with your help and now I am working towards 2391. There is very little good specific content for 2391 about. I am sure that anything you create would be very popular! Thank you again!!!
Thanks Mark. Yes there will be plenty on 2391 over the next few weeks.
Thanks for supporting the channel, it is appreciated.
Dave.
Wow. Thanks. Your videos are doing such good service to the electrical industry. You are a terrific teacher.
Nice of you to say so and it makes the effort worthwhile. Thanks for watching. Dave.
In terms of explanations and understanding I find this the best channel. I'm a new learner! Thanks 😊
That's really nice of you to say, thank you Luca.
Thanks for watching, lots more to come.
Fantastic more confident with this video 😀
Excellent Teyron. That's exactly why I made them. Thanks for watching. Dave.
I love all of your videos! Althought I'm familiar with alot of the knowledge in my working life, I still like to watch your videos as its extremely informative! Thank you 🙌🏽
Thanks Nikunj, much appreciated. We are always learning, never stop. Thanks for watching, Dave.
Hi Dave , Another excellent video it it very helpful, your effort we learn, please do more video thank you
Definitely will make more Azizur. Thanks for supporting the channel. Dave.
Great to see the channel growing dave another excellent video, thanks for all your efforts pal.
Thanks Stevo and thank you to you for being so supportive. Very much appreciated. Dave.
@@learnelectrics4402 Any time mate, keep spreading the word.
GREAT VIDEO 👍
Glad you enjoyed it, Dave.
I've recently passed this exam. I always come back to your videos they are excellent
If they helped in a small way that is great. Thanks for watching and spread the word. Lots more to come. Dave.
Your channel very educational and please keep the practical assessment coming! 100% subscriber🙂
Its very importance the test leads are nulled before carrying out any Dead Testing i.e., end-to-end resistance measurements. Also, when verifying the highest R1+R2 reading for a RFC with an additional spur, would the R1+R2 spur reading be recorded on the schedule of test results? Assuming the spur reading was the highest.
Yes Tony, record the highest reading for the circuit. Thanks for your comments. Appreciated. Dave.
really good help.
Thank you. Dave.
Excellent video👍🏻
Thanks Dibbo. I hope you find this one useful. Dave.
Superb and so easy to understand with yourself Dave at the helm. Do you have a video on the explanation of parallel and series circuits as i never thought of a radial and a ring circuit in that way. I think the total resistance of a parallel circuit is always going to be smaller than the value of the smallest resistor in the circuit but i would like to try and understand the reasoning behind this otherwise im only relying on memory. Im 53 now and ive done and passed my 18th edition,part P and the 2391 at an electrical training centre last year, but because im not actually working in the industry i fear i may lose the knowledge that i worked so hard and studied for so these videos are a real massive help for me to keep brushing up on. im hoping to get some practical experience as a sparks mate even an odd day here and there as i find electrics fascinating and have a real passion for. Thank you so much for taking the time to make these videos Dave very much appreciated.
Yes we do Angela. Have a look at this video on Ohms Law and parallel circuits. There will also be a followup video on series/parallel circuits very soon. Never stop learning, there are loads of folk around your age who are taking up electrics and they've always been a pleasure to teach. A thousand small steps and you will get there. Thanks for watching. Dave.
ua-cam.com/video/EIlLGR09E6Y/v-deo.html
Angela you should sign up with some employment agencies if you're looking to get on the tools. If you have quals and enthusiasm you're already more of an asset than some of the electrical mates out there, believe me! I was 40 when I entered the industry. Enjoyed it ever since.
hi Dave great video again many thanks
can you make more about economy 7 information
We can definitely think about that one Ismail, I've put it on the list.
Thanks for watching
Dave.
Great 👍
Thank you. Glad you found it useful. Dave.
Thanks Dave
Thank you. Glad you found it useful. Dave.
Cheers👍🏻
Thank you Robert, thanks for watching.
Great video. Can I ask some advice please. On a ring I tested after an addition off a few extra sockets. My R1+R2 was 0.19 roughly but in a few other sockets this jumped up to 0.44. Could this be due to loose connections or worn socket not making contact properly with my plug top tester lead?
Ps Do you have any videos on problems of a ring within a ring on testing and identifying please? Many thanks
Take a look at these two videos on testing and fault finding some problems on ring circuits
ua-cam.com/video/0hY0W9FcDZw/v-deo.html
ua-cam.com/video/V0_6_WmkmsY/v-deo.html
Hi Dave
We are waiting for your 2391 -52 (online exam pass) tips . Hope you will be helping us .
Definitely will. Thanks for your support. Dave.
When doing the cross-connect line and neutral why do we divide it by 4?
Renzo, its how parallel circuits (ring circuits} work.
Take a look at this video, it goes into detail about how this happens. Once understood, you will remember for ever. I know its about spurs but it starts off with simple ring circuits and the methods behind it.
Thanks for watching and keep learning, its a good trade to be in.
RING CIRCUIT SPURS - FINDING THE SPUR - CALCULATIONS AND TESTING - HOW TO SET UP THE TEST can be seen on this link ...
ua-cam.com/video/V0_6_WmkmsY/v-deo.html
Hi dave requesting ramp test and calculation please do video please
RCD ramp test is automatic Azizur. The RCD should trip between 50% and 100% of its rating. There isn't a calculation for the ramp test. Thanks for watching. Dave.
👏👏👏👏👏
Thanks for the positive votes, really appreciated, Dave.
Where did the 0.9 come from?
For some calculations, for demonstrations, we have to start with a figure that would be common when testing. hence 0.9 ohms. Very typical. Hope this helps, Dave.