Electrical Fault Finding Protective Bonding Conductor to Gas and Water. AM2 and AM2S Assessment
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- Äas pĆidĂĄn 26. 07. 2024
- Electrical testing and fault finding with Marcus. In this video we explore a fault on the protective bonding conductor that goes to the gas and water (gas or water bond). Using the ohms scale of a Megger MFT tester Marcus explains the fault and how to find it.
Update please watch đđ»
đ” How to Test the Protective Bonding Conductor - Testing and Fault Finding Hints and Tips - AM2 & AM2S âą How to Test the Protec...
== đ Time Stamps - Cut to the action đ ==
00:00 - Fault finding on the bonding conductor
01:19 - Setting up our Megger MFT to measure resistance
02:00 - Isolation before disconnecting the bonding
03:26 - Bonding to the water and NOT the gas
03:53 - Learning summary
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 one 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
To quote you....."this video has been some help"......keep them coming
Cool - keep them coming . Fault finding series is a great idea
Wow another amazing free video for the apprentice of the electrical industry đ. Great work Marcus
still interesting, I like to watch these videos still as a registered CPS spark just to make sure that I'm keeping to the required standard, due to my experience I am now pre-empting what you will be doing in each situation.
Love the videos Gaz & team, see you soon.
Brilliant your taking the time to make these helpful videos on fault finding đ
Looking forward to this series of vids.. I love fault finding!!!
Youl George massive thanks đ
Thanks for all your training and content, passed my am2s first time last week with 98%
Lee thatâs amazing great work đ
Well done đ
What did you find the most difficult
Donovan Greenwood id say the conduit bending was the most awkward as you have to be so accurate with it. GSH channel has some good videos and tips which helped a lot before hand.
Fault finding master Marcus! Woop-woop!
Thanks Mr JR Training
Excellent. As a relative newbie to the industry I've always found fault finding to be the most difficult aspect of the job... not to mention the most frustrating.
Looking forward to getting to grips with these issues. đđŒ
Love it, straight to the point đđ
Apprentices must love this channel, great work guys
Thanks đ
keep them coming I love fault finding Thanks
Always very helpful cheers lads!!
Thanks for the support. Marcus đ
Iâm not in even this industry but love looking at these videos. if they did a basics series for beginners would really appreciate it.
Great work Marcus đ
I have experienced it in social housing at a property where the tenants were getting a Shock/Tingle off the kitchen sink when washing up( wet hands).The property just had a new kitchen units fitted and the Equipotential water bond was not reconnected and behind the units out of site( had to use a r2 wander lead to check if pipes were earthed ) and also it was a TT supply with the main earth cable had become disconnected inside the earth rod box cover as they weren't properly clamped and just had wires splayed with no clamp both were tested using a r2 wander lead and checking Ze at the consumer unit . so basically no main Earth as well for possibly many years relying on just the water Equipotential bond. It was corrected on both issues with testing carried out.
Thank you đ
Loving this video, looking forward to the next
Thanks đ
Honestly you lot are so useful thank you đ
Thanks for the fantastic feedback đđ»
I just recently passed my am2s assessment and want to say thanks. Your videos were very helpful in my preparation.
Congratulations George đđ»
I love your videos Gaz (and Marcus), really helpful and informative! Just a quick question regarding bonding. If we have a mixture of copper and plastic pipe, how is the best way to bond the copper? Do I have to go from section to section with the bonding to ensure continuity?
Hi, do you have any more other videos on fault finding for the am2s.
Faults on: bonding, heating system, DOL, lighting and light switches and sockets
đ How many videos of fault finding can use get up before i take my fault finding section on Wednesday đ
Good luck on Wednesday đ
GSH Electrical Thank you
How did you do ?
What type of fault would this come under? Would it be an open circuit?
Under what circumstances would a tingle accur anyway. After you bond should you investigate how there is voltage on the pipe?
Its just a potential difference would be a tiny, naturally occuring voltage
Excellent training video again but to nit pick , There is no maximum reading of 0.05 ohms for a main protective bonding conductor given in the regulations, they are sized to table 54.8 or where non pme conditions exist, half the size required of the earthing conductor etc etc. Even gn3 states that the 0.05 reading is NOT from the MET to the extraneous pipework, it is just a general low number of resistance to confirm that pipework when tested between one another is reliably connected together by a suitably low resistance say â0.05 ohmsâ
Remember the level of learners we are teaching : level 1, 2 and 3.
A reading ideally around 0.05 ohms - measured between any two metallic parts - is usually considered adequate to confirm that bonding is in place...
Hence if you have a reading to both gas and water of 0.05 ohms over less the reading between them should be 0.05 ohms or less... we go into more detail in the classroom at level 3 and 4.
Fantastic comment and thanks for watching. đ
Would there not be 2 faults here? One causing the tingling, a line conductor possibly touching the pipe and also the fact it's not tripped the RCD,which is showing the broken bond as youse pointed out?
No cheek intended by the way , always learning myself.
I was thinking exactly the same lol
Its just a potential difference would be a tiny, naturally occuring voltage
New to being an electrician and haven't done any fault finding so far so these videos are greatly appreciated. One thing I didnt understand was how someone would be getting a slight shock off the pipe?
Under fault conditions, everything that is earthed becomes the same potential. For example 50v. All pipework, metal clad sockets, fridge freezer etc become 50v on the extraneous/ exposed conductive part. When the bonding is broken, the gas pipe will no longer be at the same potential as the rest of the installation so if you touched the fridge freezer (50v fault condition) and the gas pipe (0v) at the same time then the potential difference is 50v going through you. If the gas pipe was bonded there would be no potential difference therefore no shock/ current flow. 50v from fridge to 50v to gas pipe = 0v
The 0.05 ohms doesnât actually appear in the regs . It only appears in one of the guidance notes.
Thanks see other comments for think on 0.05 ohm đ Gaz
PS remember the level of learners.
Thanks for watching and commenting. GAZ
Apologies but what is causing the tingle? Where is the voltage coming from?
What is happening with my posts they seem to be hidden blocked or deleted?
Unlikely Sean - repost your comment đđ»