INSULATION RESISTANCE TESTING AND TRACING

Why do we test the insulation resistance of electrical circuits? After all, it’s just plastic, what can go wrong?

In this video we look at the reasons for testing electrical circuits, and then look at some established methods to carry out insulation resistance tests. How do we prepare for testing, what must we do to the circuits even before we begin.

And then we will look at the numbers involved. What is a good result, a pass; and what is a fail?

We will show you how to calculate parallel resistances to obtain an accurate value for the whole of the installation so that decisions can be made regarding the ongoing safety and reliability.

And if we do find problems on a circuit or within the installation, what can we do about it? So finally, we will introduce an excellent method for tracing insulation resistance faults in a circuit.

This video is number 106 on our YouTube channel

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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.

[qitvsjm]

Just shown this to my college mates. Now they understand. You are brilliant.

[garyplant]

A lot of people are learning a lot from you Dave. As always, these videos are an invaluable addition to the tool box. The time and effort you put in to assist others is above and beyond. Well done mate!

[danielteyehuago]

Wow! This is video very informative and the best tutorial on the topic for me so far. I really appreciate it. Thanks for sharing it with us.

[RanjitGill-du]

What an amazing video broke the testing down into bite-size pieces and made it easy to understand thank you very much

[robertsaka]

Dave I am 55ys old but I have just assimilated the true concept and procedure of the Insulation Test. Well explained .👏👏

[danielteyehuago]

I have never regreted subscribing to it...

[qitvsjm]

Great video mate. Just watched it again.

[aamontalto]

I like your binary search method for locating the fault in a ring circuit. I‘ve been programming for the past 38 years (recently retired) and it’s a classic tool in computer science. I studied electricity up to pre-university but this teaches you almost no skills in house circuits. I’m finding your videos invaluable. Thanks for your work. Subscribed.

[craigrollinson]

I love these videos, the 18th edition one has really helped. Thank you very much

[olusegunakande]

Thanks for this. it keeps me ontop of my professsion. I passed my 2391-52 C & G after learning from this channel. Guys, continue subscribing to this educative channel please.

Quick question: What are the test a Solar PV Electrician should carry out of intallating a Solar PV system? Ze, IR etc ?

[Михаиллеви]

Following on from ring fault finding and ring circuit socket sequencing this is great 👍

[godfreyssemagobwe]

Thanks so much Mr ward for such an educative lesson.

[vinzers]

Simply amazing. Huge thank you for this video. 🙏

[stuart]

Big thanks, not rushed and very well explained👍

[robertwainwright]

Another brilliant and informative video 👍

[kojak]

Hi Dave. The last time I waited in anticipation like this for the next episode of anything, was prison break many years ago. 🤣. Merry Xmas, God bless. 👍🏼

[qitvsjm]

Really useful information. What a brilliant channel.

[RashisSpace]

Thank you so much dear sir, very useful video 🥰👍❤️

[s]

Thank you for your efforts, this is high quality content. Your visual diagrams are also an excellent aid. Subscribed.

- also i’d like to ask, if testing between L+N and Earth, how would you locate the neutral for that circuit as shown on 14:21

[jimmyqing]

Great videos thank you very much for your efforts..