R1R2 Link Makes Testing for Continuity of the CPC Faster and Easier Especially Whilst Training
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- Опубліковано 6 сер 2024
- The R1R2 link will make carrying out the continuity of CPC test faster, easier and will reduce the number of times the line conductors needs removing for a circuit breaker (MCB). Over my years of teaching apprentice electricians I have changed the way in which I link the line to the CPC during dead testing. I started out disconnecting the line conductor and using a crocodile link to connect it to the earth bar then changed to screwing the disconnected line conductor into the earth bar. However this R1R2 link means you can leave the line conductor connected to the MCB and link to the earth bar saving you time and potential damage to the screw of the MCB. In my experience this link would work very well in a training center or FE college reducing the number of times a line conductor would need disconnecting from an MCB.
Please Note - this training rig and is NOT connected to an AC supply. I have many video on my channel talking about and covering safe isolation.
= 🕐 Time Stamps - Cut to the action 🕕 ==
00:00 - The R1R2 link
00:13 - Crocodile clips to link line and CPC
00:23 - Link the line and CPC in the earth bar
01:00 - R1R2 link
01:29 - Remove the resistance of the R1R2 link
01:42 - Connecting the R1R2 link in the consumer unit
01:56 - Connected to the MCB
02:28 - Continuity test
03:30 - Now that was easier
🔵 R1R2 Link For Continuity Will it Work on RCBO's & How Much Extra Resistance Will it Add in Circuit • R1R2 Link Will it Work...
R1R2 Link Can Be Found At
super-rod.co.uk/r1-r2-link/
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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R1R2 Link For Continuity Will it Work on RCBO's & How Much Extra Resistance Will it Add in Circuit ua-cam.com/video/moxKGSSCLt4/v-deo.html
Now started to train as an electrician. This video is very helpful cause I never understand how to do R1 and R2 testing. Thank you!
Wow, didn't know they had these, fantastic helpful tool for dead tests
While watching this I found out I am not interested in a Verisure Alarm system and that the funeral industry has been ripping off the British public for decades. It's amazing what you learn from UA-cam.
🤔
Sort of brings safe isolation and proving dead into sharp focus - you'll only forgot to do that once using this method.
Brilliant idea! Just ordered one, well worth the money! 👍
Please feedback to me 👍🏻
Where from
@@yoyoyotooo eBay
Long overdue especially at college! Will save all the screws getting chewed up on the breakers!
I’d be intrigued to see a comparison on the rig between each method, link, earth bar and that new lead to see if the magnet connection causes higher resistance than a screw connection or a croc clip.
I may follow this video up in the coming weeks all depends on time 👍🏻
I'd also be interested to see the resistance difference of this also. If it offers more resistance, I'd be inclined not to use at college because they will go into the big world still using it.
Been using this for a while, it’s great on EICRS, I’ve got two for being able to test multiple radials close to each other to save having to go back to the board the whole time, for example a boiler and immersion next to each other or both lighting circuits etc.
Totally understand the college environment not wanting to remove and damage the screws I remember all the gear we had was battered fo that reason
Thanks for the great feedback and comment Jay
Looks good, Just ordered one 👍👍
Please update me on how you get on using them 👍🏻
Please send us the link.
Many thanks
Yes please could you send a link where to order from plz.
Need it, got it 👍 👌
Great idea, used my colleagues one recently. the only downside is it only works on MCB'S and dosnt fit RCBO'S. Good bit of kit for the test bag though.
👍🏻
Brilliant update. Game changer. Please could you send link where to buy this? Thanks in advance.
On Starbreaker boards can also just pop the MCB out in the on position crocodile clip on the bottom MCB pin
Great video, nice little tool there 😎
Great idea but do they do longer ones for use on bigger three phase boards where mcbs and earth bar can be quite far apart?
Great content as usual, been watching your channel for over a couple of years and have learnt much. Off topic but hopefully something you will cover soon. I did a recognised domestic installer course 2 years ago, called up the Niceic (as they recognised this course) to find out that they no longer recognised this path. So I’ve been doing electrical work over the last 21 months to be told I’ll need to go back to square one! It doesn’t make sense to Chuck so many people under the bus, the barrier to being CPS is the NICEIC, why don’t they make the. Assessment more difficult? Maybe a special assessment for the thousands that left their old careers to join the industry. You’re well respected and known, is there anything in the pipeline for guys in our position?
Screwed over by a profit making organisation that has no representation for its subscribers
@@paul_my_plumbs_uk
There’s no logic, if I was crap I’m still going to be crap, just not able to instal in a special location(jeez if it needs an rcd fit one) install a new circuit (easy) fuse board, pretty easy. More people can still come into the industry and do minor works. I was aiming to be on the domestic installer scheme, I was doing it in the correct manor and getting the full 2 years experience before booking the assessment ( it’s well known the NICEIC didn’t check) I just don’t get it!! They’ve wasted 2 yrs of my life. I was never going to do commercial, why not just make the assessment more thorough. It’s going to be a nightmare to go back to square one. I thought this would be a good salient point for this channel to get into.
Just bought one myself and seems good.
I do think the importance of the circuit being locked off and tested for dead should be explained for students watching the video as they will get a big shock if they don't know
Where from
@@yoyoyotooo they sell on ebay 👍
Seemed like a rather high reading on such a short circuit?
Perhaps it is also reading parallel paths. Good idea though.
I turn off the main switch, mcb's and link the buzz bar to earth block. Switch on the breaker I'm testing, turn off once test result achieved and move along accordingly.
1.30 ohms is high for that little run, I agree.
Thanks for suggesting the method. If the cpc also connects to parallel earth paths - that would lessen the loop resistance.
In a two fault scenario, the designed earth circuit pathway could be broken some way towards the distribution board whilst being in fortuitous contact with parallel earth paths nearer the load.
Just remember to remove the link before turning the mains back on. Don't wanna have to replace the 1361bomb 😏 or call dno.
won't the reading be wrong with all cpc's being connected and giving parallel earth paths?
Fantastic idea, cannot order till Wednesday now. Out of stock
They have been selling like hot cakes today
How well does this fit the deeper RCBO screws?
Great idea, I use the two ended crocodile type clip but this looks even better. Have you seen if there is much difference in the value given between the two. Just wondering what the connection is like with the magnetic type would this higher the resistance giving a higher reading? Think I'm still going to buy one anyway
It will increase the readings in the region of 0.01 to 0.04 ohms.
Try it both ways see what difference it makes 🤔
Wouldn’t you still pick up potential parallel paths via the earth bar (MET) and not actually testing the cpc to line only for that circuit???
No. The test current takes the pathof lest resistance/ making the smallest circuit possible so the test current turns back at the MET along the link directly into the Brown wire. ( the electrons t dont go off to earth and all the house's earth bonding and back. ) it takes the easiest / shortest route to make a circuit
I think
@@highgatehandyman6479 The issue however is that the main CPC for the circuit could be missing altogether - if there's a parallel path then this will then potentially show the circuit as having a CPC - when it doesn't. Disconnect the CPC and test properly all day long.
Thank you, good video, I’m going to order one of these, do they make these in different sizes ? A lot of the RCBO’s now have smaller screws.
R1R2 Link Will it Work on RCBO's & How Much Extra Resistance Will it Add in Circuit For Continuity
ua-cam.com/video/moxKGSSCLt4/v-deo.html
@@GSHElectrical if you null the meter, it won’t add any resistance to the circuit.
To prove correct readings could of shown the line conductor joined into the earth bar
The double ended croc clip as you already shown!! Then the new r1 r2 lead be interesting to see if the readings differ, im not convinced that the magnet is making a sound connection on your breaker
R1R2 Link For Continuity Will it Work on RCBO's & How Much Extra Resistance Will it Add in Circuit ua-cam.com/video/moxKGSSCLt4/v-deo.html
Question: does the PZ head fit into an RCBO terminal? They’re usually a lot smaller than a standard MCB. Definitely want to purchase as I do at least 2 EICRs per week but want to know about the RCBO question
R1R2 Link For Continuity Will it Work on RCBO's & How Much Extra Resistance Will it Add in Circuit ua-cam.com/video/moxKGSSCLt4/v-deo.html
Gary a lot of your learners are like me training to be domestic installers and have been chucked under the bus, it would be great to hear an alternative view from the channel on this unprecedented situation of guys like me in change of careers and now being told we’ll have to spend 2 more years training when we thought we’d got there..
How long was the domestic installers course originally
What's changed?
My adults take 3 years to be a domestic installer 👍🏻
@@GSHElectrical
Yes that’s a recognised path, but I took a NICEIC recognised path have/am doing domestic electrical work past 2 yrs. Could you explain domestically what extra will I learn? I’m not needing to know about commercial/industrial. Without being rude it’s not Rocket science! I’m 48 yrs old I haven’t got time to go back to square one because someone hasn’t thought about my situation. I’m happy to do a more thorough CPS assessment and a 2391 exam. But to do level 2/3 diploma would mean taking 2 weeks off every 2 weeks for some time, then get an NVQ , getting work in a sector I’m not wanting to work in, don’t get me wrong I would love to do it, but I’ve been doing what I needed to do for the last 2 yrs and they chucked me under a bus.. they really need to have a more difficult course for guys like me. The NICEIC SHOULD BE THE BARRIER FOR SHITE ELECTRICAL WORK. thanks for your reply, you really can learn a lot from your channels.. it would be great if you could highlight this situation on your channel ;-)
@@richardpurdy3432 CPS registration, you must have a diploma level 2&3 plus an NVQ doing commercial jobs, a pretty long path for someone like me who took a NICEIC recognised path, albeit I did it properly and actually worked with other electricians and got 2 yrs experience (even though some just went and got an assessment without 2 yrs) and because of this they changed the goal posts, all I want to do is be able to fit a shower circuit, instal a car charger and Change the odd board. It’s not bloody rocket science!!
What about the problem of parallel paths from the other circuits cpc and main bonding conductors that may be present in the board at the time of the test?
The insertion contact resistance of the driver head to screw is an unknown and immeasurable value in these circumstances and WILL have an effect on accuracy. Surely it's not impossible to design an insulating clamp that fits over the breaker top to bottom (or front to back) to clamp the contact to the screw rather than relying on a magnetic contact? What if the screws are nickel plated brass? Nice idea that needs more thought and design input, PLUS an analysis to measure actual contact resistance & effects (if any).
Yes, there will be an unknown negligible resistance value between the two points you have pointed out. But this is not about accuracy, it's about knowing that the readings are in the right area to trip the overcurrent devices if need be, and there is continuity there. If the figures were way out, then you can investigate further.
Non-electrician here... are you always guaranteed to have steel as opposed to brass screws ? 🤔
I agree with Steve Whiting there’s no point in you doing an R1 R2 test this way !!! the whole point of it is making sure you have the Earth to and the live on that particular circuit …if you do a link to the Earth bar there are multiple earths on there , also earth bonding cables so you would be getting a parallel earth path ,From multiple CPC ‘s, your test would have a major flaw when testing upstairs and downstairs lighting circuits there would probably be a point where the both of the two circuits would be joined at say a light switch then you wouldn’t know which Earth was your circuit
I see the benefit for Starbreaker boards, but jump leads only require the breaker to be turned on for the circuit under test or am I missing something?
A brain
@@funhaus_crew Yawn
Are you not re-introducing the resisance when the MFT leads are diconnected?
I assume that after removing the R1/R1 loop - before the next task involving resistance measurement, the meter would be re-nulled by shorting the the meter's leads croc clips.
Does connecting directly to earth bar not give you as accurate a reading as connecting to just the correct cpc for that circuit?
Where do we buy them from i can't seem to find them..many thanks
Link in the description 👍🏻
Does the magnetic screw head fit in rcbos? As they are smaller than normal Mcbs.
Commented but noticed your pinned comment.
Second opportunity for views 👍🏻
R1R2 Link For Continuity Will it Work on RCBO's & How Much Extra Resistance Will it Add in Circuit ua-cam.com/video/moxKGSSCLt4/v-deo.html
Why no connect to buzbar and. Switch off all MCB except. That breaker we testing and do this way
This is a Crabtree Starbreaker board so no access to the busbar
I’m thinking of ordering this.. do you know if I can use it in AM2?
They will provide you with a selection of test equipment you can use on your AM2 👍🏻
@@GSHElectrical thanks for the quick response👌🏼
Why not clip the crocodile clip in the bus bar and turn on each mcb as you go along?
This is a Starbreaker design so no accessible busbar 👍🏻
Also, by clipping on to the bus bar, if you forget to take it off the main fuse will blow.
@@r1r2link39 the method I use and yes I have made that mistake once......💣💥 never again
Where can we get them
Link in the description 👍🏻
Where can I get one
Link in the description 👍🏻
They dont fit in the crabtree non compact rcbo and probably some other brands of the non compact variety, really annoying
Got a link ...to buy Gaz 💪
Thanks 🦾
Other way would use a lug and have it exposed for a Croc clip
Can’t find it anywhere, the website takes you nowhere
The R1R2 link can now be found at super-rod.co.uk/r1-r2-link/
Why is it called R1 and R2 ?
R1=Resistance Phase
R2=Resistance CPC
dont think that magnetic screw is strong enough....would love u to screw the phase into the earth bar ...and compare reading
Doing it this way you can get parallel paths and will effect the results so I always discount the earth from the earth bar.
Why can you not just use a lead with 2 crocodile clips , Turn off Main switch or RCD, check that power is off, one on earth bar one on busbar do all R1 R2 testing together
I like the idea but will make someone jump when they have just took a call and forget to turn off breaker 😂
left the fuse on once and done this and blew the granny out the board..
1.32 Ohm on a circuit thats about 3m in length?? How the hell is that even possible? Something is defo busted there (either that magnet lead or your tester).
It’s the resistance of the switches as they never go live and the contacts have tarnished increasing circuit resistance… 👍🏻
@@GSHElectrical Oh okay. Thank you for the explanation.
Not actually testing the CPC of that circuit if put on the main earth bar,
R1 + R2? calculate ;)
1.2 ohms is a very high reading for a 2 metre circuit total.... not sure its any good for the real world
The resistance in colleges comes from the contacts in the switches as the circuits don’t get to go live very often and the switch sit around unused for about 10 months of a year. All of this contributes to tarnishing switch contacts hence the high resistance 👍🏻.
Rubbish, magnet is very weak keeps falling
Thanks for the feedback 👍🏻
@@GSHElectrical NO problem. I ordered one on Amazon, Then I realised this stuff can be dangerous and I contacted the manufacturer and explained my safety concerns. They promised investigating it. It is a shame; I really like it. Do you know an alternative supplier?