Measuring the Continuity (Resistance in Ohms) of the Protective Bonding Conductor to Water and Gas
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- čas přidán 5. 07. 2024
- Students training aid for testing continuity of the protective bonding conductor. This is the conductor that connects to the intake point consumers side of the metal gas pipe, metal water pipe and metal oil pipe in an electrical installation. The supply needs isolating and parallel earth paths removing in order to do this dead test. The maximum value for the continuity of the protective bonding conductor is 0.05 Ohms.
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Update please watch 👇🏻
🔵 How to Test the Protective Bonding Conductor - AM2 & AM2S Testing and Fault Finding Hints and Tips • How to Test the Protec...
= 🕐 Time Stamps - Cut to the action 🕕 ==
00:00 - Measuring the resistance of the protective bonding conductor
00:32 - MET connections
00:59 - Same protentional
02:17 - Isolated the supply before testing
02:59 - Disconnecting the protective bonding conductor to the water
04:00 - Setting up my Megger MFT to measure ohms
05:24 - Reconnecting my water bond
05:35 - Using a long wondering lead
06:43 - Testing the protective bonding conductor to the gas
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Videos are training aids for City and Guilds (C and G) and EAL courses Level 1, 2, 3 plus AM2, AM2S and AM2E.
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Please add the knowledge from the video below to the video you are currently watching... thanks Gaz
Parallel Earth Paths - AM2 and AM2S Removing them for the Continuity of the Protective Bonding Test czcams.com/video/c2xEoNPfx3s/video.html
this guy as got to be the most helpful tutor I've watched.
Hi. Thanks for the support and watching. Gaz 👍
Agreed👍🏻
Agre
Agreed
Very true!
If there was an award for "Best Electrical Tutor " then this guy would get it..! amazing insight and information explained and articulated on all levels of understanding ..10/10
Teachers pet
Your the guy who brings in a fresh apple 🍎 everyday 😂
The tutor in this video: articulated English, clear and concise.
My tutor: stuttering some scot gibberish of which i only understand a third. No wonder i learn more from youtube than my course
Interesting comment 🦾. Gaz (thanks)
Brilliant videos. Great to see somebody who goes into the nuts and bolts of inspection and testing inpaticular but everything generally. Many thanks for producing these highly instructional presentations
+Danny Mort
Hi. Thanks for the kind words just trying to help my learners over the moon if anyone else watches. Thanks GSH Electrical
Excellent explanation, making it very clear and easy to understand, and also the extra info about cleaning the pipe to make certain no novice falls into an easy mistake. Thank you for uploading.
Very professional and a first class presentation style.
Ty. Very clear and thought out vid. Best I’ve come across on YT. Subscribed 👍
Hi. Thanks for the support and positive comments GSH Electrical 👍
Guy knows his stuff , spot on , always good to refresh the mind
Ryan Taylor thanks for the positive comment. Gaz 👍
thank you ! Mate , much more confident now
Excellent videos! Learnt a lot from them. Super tutor makes everything so understandable.Thank you!
GabberHungary thanks for the wonderful comment. Gaz 👍
Really great videos! I'm currently watching all.
Hi. Thanks I hope they help. GSH Electrical
Another great video, so easy to understand and very well explained on all of them.
+Alan Murtagh
Hi. Thanks for the support and all the best GSH Electrical
Great vid
By a real pro.
Many thanks
Top draw boss very impressed Much appreciated 👍
Hi. After a 15 hour day your comment is much appreciated. All the best GSH Electrical
Your a hero lad
Another great and very well explained tutorial all the bsst
Thanks
Thanks very much
Hi off topic. You guys reviewed these amazing click on and off holesaw recently. Were they makita or Bosch? What are they called? Been looking on Amazon
Awesome again
Thanks for commenting and watching 👍🏻
I looked at a consumer unit swap recently. The MPB for the gas is there at the board but a new meter has been recently fitted and the bonding conductor is missing. I've disconnected the cable at the MET and done a continuity test on the copper pipe and I get an acceptable reading but I obviously can neither see the cable or the safety label. Is my only option to run a new cable.
Hi am I correct in thinking with the uses of plastic gas and water pipes m.e.ts wouldn't be used.
Another masterpiece Gaz cheers, quick question, when carrying out a Eicr will you need to test r2 at every electrical point, I say yes, others say zs at end of circuit only? Cheers, are there max. Readings for r2 on 1.0,1.5, 2.5,4.0 conductors?
Agree the extent of the works with the client requesting the EICR 👍. Thanks again Gaz
Excellent videos thanks.
Can I ask if metal stud wall framing needs bonding?
Many thanks.
No as it is not a extraneous conductive part as its not exposed to touch
Thank you
Thanks for watching 👍🏻. Gaz
Maybe somebody already asked: leaving the other main bonding in the MET you might distort the measurement of the individual connections by leaving parallel resistence in the circuit? I saw one comment
the IEE GN3 states that 'the leads of the instrument are connected to each end of the conductor...One end...may need to be disconnected to avoid parallel paths' 2.7.5 Test method 2 para. 3.
"may need" is a bit vague there?
Hi Gary, enjoying your videos, I have recently been told that coiled/springing your earth cables (as seen in this video) is not best practice as it can create inductance in the circuit and could give poor earth fault path readings, I am sceptical, have you any thoughts on this?
Hi thanks for the question. We have to do it because the bonding connection gets removed and reconnect about 50 time a week. This is the only reason it look like it does. All the best Gaz
Thanks for your quick reply, I think it looks better too...👍
Hi Gray , brilliant video.
I would like to ask a question.
is someone takes a test reading of the gas bonding without removing the water bonding at the MET after safe isolation during the 2392-10 practical exam , does it make he automatically fail in the exam?
Answer will well appreciated.
Hi. We don’t currently offer the 2392-01 at my college so I wouldn’t want to offer an option. Gutted I couldn’t help this time Gaz
is that a digital magger , lol , i have gotten older i guess, thanks for the tutorial, finally some to learn,
In TN-C-S systems - why not also include a bond at the consumer unit to a stake? This would make the system MEN - as we use in Australia.
great information... i'm kindly asking the specifications of the meger you are using so that i can buy one of this kind of tool.
renox mulela this is the 1710 or 1711 Megger MFT. Thanks for commenting and watching. Gaz 👍
👍
Can I ask a question please, this is not in the UK so you may not want to answer....I am Australian living in Philippines, but could apply to many places, the water pipes here are plastic, there is no gas or whatever...you have a earth stake in the ground and one at pole, plus the earth (CPC) is linked to neutral in Cu. The house's are usually concrete and of course full of steel reinforcement, sometimes the use the steel reinforcement as the bonding or the earth itself (no earth stake), what are your thoughts on this...I should point out the the steel reinforcement does enter the soil, but of course embedded in the concrete..
Hi. Thanks for the question I think.... plastic pipes do not need earthing, it sounds like your using a version of TN-C-S and TT UK earthing arrangements... foundation earthing is having its profit raised in the UK when the 18th edition comes out as an additional earth. Thanks for watching GSH Electrical
GSH Electrical Thank you.... cheers..
Hi Gary, what about a book with all the videos you have done so far and maybe following the recommended C&G curriculum. That would be a best seller overnight. Cheers
Great idea 💡 🦾
Hi, i'm looking for the standard where it states 0.05 Ohms max. 7671 only states 10mm csa and within 600mm from the gas meter. Any help would be great. Thanks
Hi. www.electriciansforums.co.uk/threads/0-05-max-impedance-for-main-bonding-conductor.67623/
www.voltimum.co.uk/articles/sizing-main-protective-bonding-conductors
Sorry I cannot be more help I am watching my son play football ⚽️. All the best GSH Electrical 👍
Did u find it mate?
Why wouldn't you do a Ze & Zs test at the same time? I dont understand why Ze & Zs is a live test when you have to turn off the power and test it dead. Why is it a live test? & why cant you do it in the dead test section after insulation resistance?
The maximum resistance allowed is 0.05 ohms. There’s a question in the past paper that talks about testing continuity of main protective bonding conductor to a gas pipe which is 10 mm and 43 meters long. The expected reading in 0.08 ohms which is worked out through calculation. Is this then not allowed or why is the maximum allowed 0.05? Anyone able to help?
I think it's just rule of thumb
If you couldn't find an earth clamp on gas pipe, how would you confirm that one of the bonding conductors in either the CU or MET was connected to the gas pipe?
Great but I think it’s time you changed that intro background music pls. Very loud and annoying after awhile
All you need to learn about electricity is GSH, JW and SparkyNinja
Why 50 volts again?
uk.megger.com/electrical-tester-contractor-edition/march-2016/checking-touch-voltage
I don't get why you'd be worried about touching the pipe and the socket. If the socket is live you're getting shocked whether you touch anything else or not because you're at 0 potential too.
Acronyms should be banned in training videos. M.E.T? M.F.T?
Otherwise good 👍
MET main earth terminal MFT Multi functional tester. Always remember the videos are for my learners so if anyone else is watching it’s a bonus 👍. All the best Gaz
@@GSHElectrical
Fair comment, but thanks for the super speedy reply! 👍👍