Testing a Ring Final Circuit - An Electricians Day in London | Thomas Nagy
HTML-код
- Опубликовано: 21 авг 2024
- In this video I am doing an EICR at a customers house in Hampstead. Thought this was a good opportunity to give you a three step guide on testing a ring final circuit.
* Subscribe to my channel for free and never miss a video *
bit.ly/2IGEhcW
Don't forget to follow me on:
*Twitter: / tomthespark
*Instagram: / tomthespark_official
My website:
www.thomasnagy...
If you would like to support my work and donate a small amount that goes directly to my video production, please have a look at my PATREON page:
/ tomthespark
Our preferred tool supplier is here:
www.its.co.uk/
DONT FORGET to use the discount code ITSTOM when shopping!
Thank you for watching!
Thomas Nagy
WARNING:
This video is for entertainment purposes only. If you use the information from this video for your own projects then you assume complete responsibility for the results.
#tipsandtricks #tutorial
You know it's a posh area when the customer offers a mango juice 😁.
Damn right son! You also know it's a posh place when you get offered a selection of coffee rather than just one 😂
Or it's just an Indian guy 🤣
thomas nagy have you always loved coffee or is it the job? What did you do before doing this.job?
Once while fitting a kitchen a nice lady gave me a bottle of white sparkling wine, I usually drink beer but thought what the heck and drank the bottle from a coffee mug and watched some tv after work. My girlfriend was not happy the next day, When she saw the empty bottle it turned out to be an £80 bottle of champagne.. oops.
I would love some mango juice aswell please.
6:26 Thanks to householder for offer of mango juice. Very good, Tom. Suitable gratitude for unexpected hospitality.
The Phantom of the Opera is there!
Hi Tom.
Absolutely lovin your channel..Excellent content and bloody addictive..
I have been a Spark since '83, 4 yr apprenticeship..worked on; domestic, commercial & some major industrial jobs over my the years..
Always done little domestic jobs, but then took the plunge about 16/17 years ago..been good..been lucky to meet some great folk along the way, it's been tough though..but rewarding..
It's refreshing to see how you work, it is very much mirrors how i/we approach/complete work, but I am an old school dinosaur now and nearing the end of my career might squeeze another few yrs but have already started to wind down a bit..love the vans, love the bike, funny as I can really appreciate a tidy/quality van & have been riding bikes all my life..we have had our VFR 800 for 20 yrs this month..
Keep up the fantastic work, you are a bloody credit to The Trade Bro..can i suggest; Y'all please wear some PPE..you only get one pair of eyes/ears & lungs..apart from that crack on..
But what do I know ? Lol..
Hope you Yall staying safe (and alert) throughout 'lockdown'..
Best Wishes to you and the team.
Ron E Cavron.
www.cavronelectrical.co.uk
I'm a trainee electrician currently doing C&G Level 2, your videos are really helpful for us new guys to see what the job is like for real & how our training marries up with the real world, keep up the good work
Don't bother doing courses at college. Trust me, it's either an apprenticeship or nothing!!
Being an American electrician it's interesting to see how different you guys do things over there.
Worth noting that doing all three stages also confirms polarity of the socket with out having to remove it. Love the vids keep it up.
Hi Thomas. enjoying your videos. I'm a electrician in Scotland. Its interesting to see what it's like being a electrian in London. Keep the videos coming. 👍
Just completing my level 3 electrical at the moment, invaluable video. Thanks alot!
The concept of a ring circuit is doing my little colonial head in… I had to go hunt up a schematic to figure out what was going on. Interesting approach to load balancing and wire economy.
Clear and simple demonstration.. Tnx and keep up the good work mate.
Nice to see someone testing a ring properly
Glad you didn't put your drink on top of the consumer unit 😉.
Hi Tom, a very good simple instruction or explanation of a question I was wondering about. Thanks. We do not use ring circuits over here in New Zealand. Everything is wired as straight lines, phase, neutral and earth going to all switches or sockets, but light switches and power sockets may not be on the same circuit, and each circuit must have its own breaker. Switches or sockets may be daisy-chained. 2+E in all cases, each wire insulated and then with outer insulation also. Switches on 2.5 sq mm cable, and lighting sockets on 1 sq mm cable (minima). 2 or more light switches for the one light are special cases for cables. Domestic stoves (ranges) on 6 sq mm cable.
Alan Torrance If I’m correct, the UK is one of the only countries who use ring circuits. It’s actually really stupid because they’re not actually needed.
not a criticism at all of the work of Thomas ... I had my new house tested and the results were perfect and I watched the guy do it one week later I got a shock from the dryer in my utility room I investigated as I am an industrial technician with 17th edition only to find that the earthing of that part of the house was a mess .. just saying this form of testing is no guarantee of safety as it cannot confirm the quality of every electrical connection into the future if they are not individually inspected
Any work carried out on any circuit , the circuit should be checked To make sure safe isolation,after it is disconnected, Testing a ring you should also test insulation, in case it has has a crossed ring, when plugging in each socket to test figure of 8, make sure it is dead, and on the circuit you are testing. I would also check the RCD is working before leaving .
My brother has one of those fancy testing machines he is going to teach me how to use it this winter! Cant wait.
Cats and electrical testing - my two favourite things! :) Great video - loving your work.
Good to see those Schneider easy 9 in action.
I miss them to be honest. they were good boards. I firmly believe that it's not weather its a plastic or metal board, its how well you fit it. I feel a little bit like we are going backwards with metal fuseboards now. fitting a plastic board badly is one thing, but fitting a metal board badly is even worse.
Definitely agreed with that! Have you seen a metal easy9+ one in the wild yet? If not, which do you prefer of the AMD 3 boards? I've found problems with the BG ones (hassle with cutouts) and MK ones (loose terminal bars and poor cover screws) that I've had to install in the last few months, so may have to try some others out. Sometimes it's worth paying a little more for the board if it makes installing easier/safer.
And fitting a metal board on a TT system is potentially lethal.
The low reading shows it was spurred from the ring. Good job, like the videos. My stepson is just getting into his electrical qualifications and loves your videos.
One of the best testing videos i have ever watched thanks
cheers paddy. ill try to upload some other ones when i have time and the right job comes available.
testing is quite tricky to record when on site around other people etc but i'll see what i can sort. ;-)
I am also an electrical contractor in the uk and not to far from you either "Harrow" area, but i only started testing in the last 2 years or so and when i was trying to find some videos for tips and advice online when i first started i could not find any that explained things in layman's terms or in any sort of way i could get my head around to understanding especially when it came to testing ring mains, Even the videos NICEIC have uploaded are designed for a person with a brain like nuclear physicist in my opinion. Keep up the good work Thomas as i am very sure these videos will help some other poor man starting off .
you work for yourself or a company?
I have my own company Direct Electrical LTD Harrow
Great stuff Thomas.. Love your channel great refresher course with humour and and an insight into becoming a Niceic approved electrician. I have been an Electrician since 1992 ish.. Gaining C&G 2360 part 1&2 and AM1 and 16th edition and recently 17th edition. As a self employed electrician doing domestic (non notifiable work) im looking at becoming a member of niceic or napit eventually when work picks up more. What course(s) would I need to do in order to fulfill the requirements? I know I will need to complete an Inspection & testing course but these days theres different types of course and requirements it gets confusing. Great channel keep it up 😊
Thank you so much it is very helpful i am stadying electrician thank u do more video like this plz
Get yourself a set of Exact start battery leads for the Duke, will make it start easier and also save your sprag clutch 😀👍
Great video and it's very well put together.dont want to sound like the fun police but please wear leathers and gloves.its always when you don't expect it.great channel. All the best from Huddersfield 😀
@Chris Landry He took his helmet off.
I'm sure he'd be capable of taking gloves off too.
Thanks for sharing these videos. You're definitely filling a niche that isn't covered by other electrical channels, and it's great to get a feel for doing inspection and testing in a real world setting by watching your work. Your work looks very clean too! I would love to see a video with tips on how to correctly and neatly wire a consumer unit. I learned the basics in college but my tutors didn't cover what we need to do in order to do a good job. Keep up the good work. Thanks.
Hey buddy,
Glad you like the vids. I have a fuseboard upgrade coming up in a few weeks in Belsize Park so ill do some more in detail discussions for you on it. check back soon and you should see it.
all the best mate!
Will do, thanks!
Great video. Understand that better than i did at college.
Great content mate, really good to see a video showing the calculations, maybe more in the future? 👍🏼
By the way excellent video boss. Keep them coming 👍
Brilliant Video best video of yours makes perfect sense.
Absolutely spot on, great advice 👍🏼
Brilliant vid more of these tutorial type videos please
Exellent job sir.i believe thar was from phontom of the opera!.well done sir.
9:30 The Phantom of the Opera. Ring Mains make a lot of sense. However, here in South America (Chile), we don't have fuses in our plugs which would make them quite dangerous. Our main breaker at the electricity meter is a 25 amp breaker, which feeds an RCD and then a 10 or 16 amp radial for the sockets, a 10 amp radial for the lighting circuit and a 10 or 16 amp radial for the kitchen. It is very unusual to have electric heating or domestic hot water (about 95% of homes use gas-fired instant hot water heaters or combi boilers.) No electric cookers, ovens, showers or other heavy draw appliances.
Really simple, but so helpful.
How did you get the ladders on the bike?
Great videos mate
You can use the megger plug in leads on ohms and that will give you the reading the same as the keytech R1 R2 tester 👍
Cpc should be 1.66 times higher.
2.5/1.5=1.66.
I find it sometimes easier to test ring from a socket but that boards quite neat and easy to work on.😉
Great videos.
Hi Tom, great videos mate! It's nice to watch another electrician and see them take the same approach. Have you ever thought of doing your ring tests at a socket instead? saves fumbling around in a busy consumer unit especially when it comes to your figure of 8 tests. Keep up the good work!
hi mate,
ill be honest, i have always done it at the board just because that's how i was taught; but doing it at a socket actually makes more sense i guess as you ain't juggling 66 wires in a fuseboard! cheers for the tip ;-)
Best to do it at the board, I had a situation where both rings were interconnected at the board, thought something weren't quite right when I got the exact same readings for both rings.
That customers house you're working in seems camp big time !
Has nobody picked up that end to end testing is r1,r2,rn and not what was written down - R1,R2,RN Great video.
Dearie me:-(
Spot on 👍🏼
Great video!
Thanks
More testing vids! :D
My phone broke and I've finally got it back, hence why I haven't commented on your last 2 vids. Bike sounds nice btw.
good to see you back dude! Ducati 999, its a temperamental beast at the best of times!
Good job
Thanks good one
Repeated disconnection and re connection of wires in the terminals is more likely to cause a fault than prevent one. It's time they made a c/u more like the fire control panels which can be tested without messing with the connections. What a faff.
Its interesting to watch this as i am american electrician and the wiring and receptacles are different.
On the other side of the pond a fair bit of stuff is different from the UK.
wiring regs, voltages, outlets etc etc..
glad to have you on board matey!
tom
Same here in the US love Thomas Vids Different from us but very educational and great energy
Yeah! No rings allowed in US
I think the ring circuits are pretty much UK only x)
Rings should be outlawed anyway.
Brilliant video, always good for tips:) I’m new into this industry and was stuck on what tester to buy to get started? Was hoping you could help.
Thomas where was the mango juice mate? You ended up with a glass of water in the video lol
6:16 mango juice, 8:25 water
Excellent video. I know it’s a glorious day but whatever the weather, when on your bike, WEAR YOUR LEATHERS. YOU HAVE THEM. USE THEM.
Sorry saw the rest of the video and you say it is!
Are ring circuits still used / still installed? This installation looks fairly recent and I thought the trend nowadays was not to use ring circuits so much?
Jerry Barbender Ring circuits are standard for most UK electricians. It’s just how we’re taught.
very interesting!
Great video. I've recently qualified but the only test I'm nervous about is insulation resistance testing due to the potential damage it can cause. Any chance you can post one to demonstrate how you do it. The class room is nothing like real world where sensitive equipment is concerned.
Consider it done. I'm on the case😉
You're not the only one mate, if you've gone round the installation and isolated or disconnected any voltage sentive equipment and are still unsure if you got everything, do an insulation resistance test between line and neutral at 250V, that will highlight if something is still connected without damaging the equipment.
Another great video Thomas on EICR - well done good job! Nice bike - I was surprised you wasn’t wearing gloves and wearing a T-shirt. Please wear the appropriate clothing when riding a motorbike for your safety!
im running around on the bike this week doing little jobs so normally i do. its the usual thing of ''only 10 mins round the corner''. you'll see more of the bike in my next vid.
all the best tony
I love being attached to your helmet ........
Customer singing Phantom of the Opera!
You can get the exactly calculated R1+R2 on ring main on t&e with this formula:
(R1xR2)/(R1+R2) for your readings:
(0.51x0.83)/(0.51+0.83) = 0.4233/1.34 = 0.3159 ohm
nice 4mm tips ;)
What happened to the mango juice
i work with schneider and hager with 1 pole.
Can you upload the video where you priced an EICR on £ per circuit and the live neutral ins res test for sensitive equipment please
Hey Thomas, I'm a Physicist. Not sure if when you're doing your training they told you to calculate the theoretical value and then measure, but you shouldn't do that. You should always measure values first and then calculate their expected value. You are actually introducing the potential for bias in your observations by measuring then calculating. No idea what it says in the regs or anything like that as I'm not a spark! Just an interesting observation. I'm new to your channel and I'm loving the content!
You do make a great observation, same with computer science. Guessing with this sort of testing if anything is untoward then it’s quite obvious by the result if it’s way out of tolerance. Is this a forced regular testing in the UK? Here in Aus the emphasis is always on appliance testing and no real testing unless major work has just been done. (Which would not catch out DIY fuckery).
He's done it this way so he knows what the reaading should be 0.02 ohms either way would give no concerns. If you had a ring on a ring or multiple spurs it would go up and would show up.
Hi Thomas I’m looking at doing an apprenticeship in electrical installations have you got any tips as you are a very talented electrician? Thanks.
Never had to null my leads when doing a loop test (Zs/Ze). I've got a Megger MFT 1720 which has the test lead resistance stored in the unit and automatically deduct test lead resistance from your measured reading, I guess it must be different for the 1500 series range.
your meter must be a bit more advanced than my 1552. I have to null em every time otherwise you get wonky readings! By the sound of it though my Megger wont be cheap to repair so i will be upgrading shortly.
Will you be getting another Megger or will you be crossing over to the dark side (Fluke) loool
Why don't you test at the socket when sampling? then it would be easier to find which conductors are in that circuit.
10 minutes trips on a bike on a nice day always seem to take me 30 minutes or more.
Hi I'm a training electrician what would be an average price for this type of work? A full inspection?
Great work! What Ducati is that? a 999?
Is the blue your neutral?
yes it is
Blue or black depending on how old the installation is, black before April 2006, blue after.
Funny you driving on the left
How's it funny? It's been that way since at least 1756.
What test leads do you use with your Megger 1552 ? I still use original leads but have some other crocodile clips as the originals are crap .
i find i usually end up replacing them every 12 months or so becuase you end up getting dodgey readings from them. you can buy replacement sets of leads on Ebay or Amazon for about £30. thats what i normally do. ;-)
You were talking about ring circuit in the wireing could you make a diagrame on wiring board
13.36. Simple maths. for 1/4 of 1.34 1/4 of 1 is 0.25 1/4 of 0.32 (close enough to 0.34) is .08 ( hark back to multiplication tables, or are they not taught nowadays?) so 0.25 plus 0.08 = 0.33 Easy simple mental maths. I had the answer virtually as soon as you put the problem on the board.
Oh man you ride with no gloves and jacket on 😵 top work though
Gloves, helmet, jacket is my minimal gear for short distances. Boots will go on for around town and all the gear if going out of town.
What are you actually testing on the ring end to end - resistance?
asdreww might be a bit late for a reply but he's checking the continuity of the circuit to ensure that the ring is a full circuit as it should be - a high resistance reading could indicate that there's a bad connection along the line so the lower the resistance the better, to an extent
R1 R2's done old chap...would you like some foie gras with your mango juice 😎
and i wanna know your oppinion about wago, because i work with it all the time.
Wago are very good. we use them alot over here. not cheap but they are very fast to use.
They also do the ones with the little lift up levers so you can use them with flex.
about £12 to 15 for a box of 50 connectors which is around 1164 rubles.
Love them! The technology has been around for some 30 years now I think so they can be considered tried and true. If you're in a country with pretty much all-solid building wire you can stick to the 273/2273 series most of the time unless you're doing control wiring or stuff like that. The 221 series are super-neat too, the levers are much easier to pull up than the 222 and they're much smaller and easier to fit into boxes.
It's not utterly impossible to use them incorrectly though - I've seen junction boxes where the 2273s just fell off the wires as soon as I touched them!
I don't really miss working with choc blocks except maybe for nostalgia's sake - it's much easier if each wire is held in place separately than if you're trying to hold a bundle of wires in one hand, a choc block in the other and then need a third hand for the screwdriver!
I passed my bike test in 1974 .... Riding around on in tee shirts makes my skin crawl ,..... But I will forgive you....
Whats the top dial do, doesn't seem to be moving?
London is now so congested that you have to risk your personal safety in order to get to work.
There are serious faults that the standard tests won't reveal. Example: I workd on an installation that looked really good on the surface. All dead neat. But we found a pile of T&E cables joined by connector blocks buried under plaster, no switches or sockets in line either horizontally or vertically - ie, a bodge. If you want to know if it's ok, get out your crowbar and a hammer and chisel!
What’s the reason for the higher resistance on the earth conductors in the ring? Thinner conductors than L and N?
Yes, L&N are 2.5mm the CPC is 1.5mm
The 1.67 comes from the calculation 2.5÷15= 1.67 that's how he worked out resistance outcome of the cpc.
I like that you wear Dr. Martens.
What Ducati do you ride?
BRONW and BLUE connected? Flick the mains switch for fireworks :D
The live is disconnected from the fuse, so no juice on those lines
Not a sparky but what's a EICR
What bike do you have mate?
Safety first Tom.. Protective clothing on a bike, remember you don't bounce when you hit the tarmac, Great videos by the way.. 👍
Said motorcycle helmet just to clarify x
Do you only record on mondays?
no it can be any day of the week; it just seems to be the case that the footage is on Mondays!
Next weeks video is on a friday job!
neutral and earth, arent they the same thing?
was that customer singing Phantom of the opera?
Yes!
La LA La LA :D
Are you baron Von grumble?
No baron von grumble is Chris from 44teeth
Do you know what happens to human skin when you fall off at even 20mph without leathers? Protect your limbs you only get them once.
Mmeh it grows back ...
Ducati
Dress for the slide, not the ride