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Continuity of protective bonding conductors & equipotential bonding explained
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- Опубліковано 6 сер 2024
- In this video i demonstrate the continuity of protective bonding conductors test and explain why we use equipotential bonding as best as i can.
T I M E S T A M P S ⏰
0:00 - Intro
0:55 - What the regs say
3:15 - What is earthing and bonding?
4:29 - What is an extraneous conductive part?
5:01 - Why do we need bonding?
6:27 - What is electrical potential?
8:28 - What is supplementary bonding?
9:53 - To bond or not to bond
12:06 - Safe isolation
13:12 - Diverted neutral currents
15:40 - THE TEST PROCEDURE
18:30 - What if i cant find the bond?
20:05 - Making a good connection
21:05 - Massive earth cables
22:13 - Designing bonding conductor cables
22:57 - Different bonding clamp types
24:09 - Parallel paths
26:06 - Outro
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The works carried out in the video and the opinions shared are my own, and not representative of the associates and companies in the video.
This content is purely for entertainment purposes and is in no way a "how to", tutorial or educational video.
Please consult an electrician when dealing with any electrical installations.
#electricianlife #electrical #electricalengineering
Sorry dude. Just watching it again. You've got a talent for training! I was in corporate training and development for years before seeing the light and becoming and sparky. You've got talent. Just saying.
These videos are so good Mike. I am sure everyone in A121 is following anyways but I will be directing them at this! Keep it up mate.
What a high quality video this is! Congratilations, this is real high standard educational content! Many thanks
Excellent explanation and video mate! Stop putting yourself down, you explain it in the way we understand and that’s far better than some professor with a blackboard, I’m glad you spoke about DNC, it’s a big topic up here in Scotland as our network is on its arse (I’d imagine rest of uk is same), i had some right arguments with so-called electrical engineers when I was a generator engineer, some of the gurus never used earth rods at generator stating that the generator was TNC-s....... the outgoing side was but the alternator is the star point so needs a rod, once again Mikey thank you for doing these videos
Really well presented.
Like someone said in a previous comment, you have a great way of explaining in normal speak and not sounding like a professor.
Well done 👏
Seriously mate I’m loving your videos, very informative for myself as an adult learner🙌🏻🙌🏻 keep them coming mate and thank you 👍👍
Cracking explanation of earthing and bonding!! Loved your detailed description and useful analogies.. I've shared with our apprentices as I think it will be super helpful for them to get their heads around what is a very tricky concept indeed!! Nice one 👍 👌
Great video, clear explanation Thankyou for your content!
Legend
Very good video. The photos add great clarity to your lectures for apprentices etc. Please keep adding those type of photos or wiring diagrams for that extra clarity. The don to earth "Normal Speak " as someone else mentions below is great and not aimed at engineers. Thanks again
Cracking video. I wish you were around when I was learning this stuff. Keep it up.
Good video Mike. I enjoyed and learnt from it. Keep it going
Fantastic video Mike! So well explained. I'm in a unit block in Sydney and our water meter seal failed. The water authority changed the meter and I was interested to see what they'd do to protect themselves when removing the meter. They had a test / monitoring device which they clamped on to the incoming and outgoing water pipe. I wish I'd got the name of the bit of kit. I was happy to see no issues on exported or imported fault current. Cheers
Awesome content mate, taking some of this knowledge into my new job as a Trainee spark ( big ginge from Kettering)
Awesome UA-cam mate, very helpful
Excellent
John Ward in the making? Great explanation.
Thanks
Nice video but small anal fact here that if you coil the Earth cable you can induce noise into the CPC circuit as it acts like a sort of tuned radio aerial which can make your RCBO's trippy
Diverted neutral current...hats off
Can you do a video on how you test if a part is actually extraneous using the 22k ohm reading
Grt Info. One question : is a surface tester the only way to check for a safe Neutral/MET ie no Imported voltage due to a diverted neutral on a neighbouring property?
For a young lad you are very knowledgeable you should look into doing traing courses like the 18th edition and ev charging
Mike, what determines if you need supplementary bonding? Are you always supposed to actually test between a tap and metallic light for example ?
Where do you get your signs for the MET (shown at 0:48)? I looked online but they’re really expensive. They look much better than the stickers though because they can’t fall off! :-)
Hi
What is the reference of 0.05ohm for bonding wire?
Would it be better to just test the voltage and ensure all bonded parts have the same resting voltage?
Also resistance values depend on temperature and humidity and any significant metal part not connected to MET should be labeled describing decision why it could also be noted on an EICR. The issue of fortuitous connections to earth of metal parts is an important one and the issue of importing and exporting potential due to broken PEN is a very important one and should be assessed but normal electricians are limited here as it’s an issue somewhat out of their control, and dare I say perhaps DNOs but without maintenance and wider testing by DNOs the extent of the problem will remain a mystery.
So basically, whatever that is metallic in the house must be bonded to the earth?
bonding leads should not be coiled, as it creates inductive impedance, shortest and most direct route for all earthing and bonding conductors is best practice
looks nice though lol
@@residualelectrical At 50hz, 2/3 of bugger all. At high frequencies, a lot. I used to work in / around telecommunications and have seen curled earth bonding between racks. Those very same racks also had lightning damaged equipment. Racks without curled up bonding all survived. I've seen it time and time again. Curled wiring, even wiring with sharp angled bends instead of smooth curved radii all put the impedance way up when it comes to impulse current and that is a significant contributor to things failing when Mr Lightning comes knocking.
@@residualelectrical it's not the resistance but the raised impedance during a transient or surge of high potential difference at harmonic frequencies which can result in damaged electronic equipment
What's the purpose of spiraling the cable like that?
Maybe to give it some give if you need to move pipes a bit.
Disconnecting the Earth for London xD
16 minutes to get to the test 😮
Just thought I would mention that where a PVC water pipe is utilised at the point of entry to a domestic installation, you need to be certain that the water pipes do not re-enter the ground at any point within the installation. If that is the case, you will need to bond the water pipe regardless of it being PVC or not.
Been a spark for 25 years and things like this still trip me up.
I’ve glad you have put this mate, I’m not a sparks yet but my understanding was “oh if it’s plastic don’t bond it” but then I have a situation at my house where yes it comes in plastic,but bit further down the line a copper pipe goes into the integral garage through the ground as you say is re entering.when I get my mft I’ll be testing the bugger 😂😂🙌🏻🙌🏻
@@kingofthetrowel1725 Yeah, it can trip you up mate. The way I see it, if it's easy enough to bond it, just bond it. It's great that you're aware of the situation at your property though. 👍
@@mb-electricalservices nice one thanks mate 🙌🏻🙌🏻
So basically you need a license to become an attorney to read those legal requirements correctly, then you need a license to become an engineer to apply the training, then you need a license as a doctor so you can treat yourself if you make a mistake!
❤
Nice one mate! 🤌🏻 imported diverted neutrals much more dangerous too if your neighbours house is on a different supply phase!!
@@residualelectrical cracking channel mate! Looking forward to more of the same! 👍
English way of explaining things
Does not work for every one
It would be good if we could see real testing more around property practically I mean
This way of explaining. Is colledge way for
Students you could be good trainer and teacher. For sure
If some one who just started college say like few months
Still would not get what you saying
Even if they have English as first language
But it is good for some one who is electrician or work as electrician for company or self employed
If you deal with Costomer directly and deal with work as well as main guy
I mean if you are director
Then you must know all this. All of it
And I think it take 5 years for students here to understand electric in and out also uk work system and style
In whole is good explanation
Study make perfect and learning and learning
Thank you. ❤