Fixing another man's lash-up!

  Рет қаралды 141,836

David Savery Electrical Services

David Savery Electrical Services

4 жыл бұрын

This is a job I quoted for and won last Christmas, but I was subsequently unable to meet the client's schedule, so they booked in someone else, an old boy who has been in the business for donkey's years. For whatever reason, things went sour between them and they asked me to come and finish the job. Not something I would do ordinarily, but the lockdown opened a space in my diary which suited both parties and it was one I could go and do on my own.
At first glance, I thought things were pretty good, but subsequent inspection and testing turned up a few questionable things including an outright schoolboy error which I attempt to find and fix with as little damage as possible as decorative finishes have already started going in, and with some interesting materials that are tricky to work with.
Sometimes you'll get a 'rock and a hard place' job like this where you have a fault to locate and correct while working around finishes you don't want to damage. Everyone will have an opinion on whether I approached this one rightly or wrongly, but really that first-fix foul-up shouldn't have existed in the first place. Someone else did the deed, then failed to find it through dead testing before it got plastered over, and now I'm the guy inheriting the headache.
If you want to comment on how it could have been done better, then please do so, but keep it informative. If you think I'm wrong, tell me why and what you would have done instead. Oh, and yes, inaccessible junctions are permitted by BS7671 under certain conditions. Other countries don't allow such, so if you're a sparkie elsewhere in the world working to a different code, I'd be interested to hear what you'd have to do in a similar scenario. For more on inaccessible junctions in the UK, I refer you to this article on my website: www.dses.co.uk/index.php/free...
Personally, I'd have probably run the circuits at a high level in the 150mm prescribed zone by the ceiling and dropped down the walls to the accessory positions. I'd have also run it as two radial circuits, one for the kitchen, one for the living areas as I'm not a fan of rings.
There were some other issues on this site that weren't recorded on camera such as lighting points with no CPC, but I only filmed on my last day when I came to investigate the fault shown. I was there for three days, and they were long days too with early starts and late finishes just to get this fitted in and ticked off. That fibreboard stuff is, presumably, Sundeala board which has thermal and acoustic insulation properties and is fire rated. It was applied to the external walls and the internal paramount (eggbox) walls. I replaced the 25mm KO boxes for 35mm for a better fit.

Пікірлер: 1 300
@EXILEIS
@EXILEIS 4 жыл бұрын
@5:00 it’s a different way of wiring a ring main. You go to ever other socket on the way out and every other one on the way back. It’s how my mentor use to do it. Some times it makes sense to do it. In trunking it removes one really long leg back to the board. But yea in this situation I don’t get it.
@tomorichard
@tomorichard 4 жыл бұрын
I know it as kangaroo method
@dsesuk
@dsesuk 4 жыл бұрын
Ah, so an old-school method! Not one I've come across before in my time, but thanks for explaining as I didn't know what was going through the chaps head!
@retrofitter
@retrofitter 4 жыл бұрын
It is so that if you draw 32amps from a socket near the switchboard the current is split more evenly over the 2 legs due to the cable lengths being less different when compared to the other method.
@dc-sd3gd
@dc-sd3gd 4 жыл бұрын
@@dsesuk it also protects from one long leg taking load if the ring is to be broken.
@lewisbrand
@lewisbrand 4 жыл бұрын
Completely bonkers and electrically illiterate : wiring a ring in this way increases the length and thus the voltage drop and resistance, besides increasing the risk of a accidentally drilling or nailing through cables.because of their illogical routing.
@MyTrustedElectrician
@MyTrustedElectrician 4 жыл бұрын
The learning material within this video is golden.
@timdoherty8152
@timdoherty8152 4 жыл бұрын
Outstanding
@dsesuk
@dsesuk 4 жыл бұрын
Cheers Luke! Fiver's in the post mate.
@markdunne7128
@markdunne7128 4 жыл бұрын
I ageee
@liamwilkinson8411
@liamwilkinson8411 4 жыл бұрын
So glad people out there like , you, Bundy, Luke, Chris, dss, tom the spark. Next level in the game. I’m a final year apprentice and this covid 19 has messed my AM2 dates so you guys are keeping me going 👍🏻
@JayTheSparky
@JayTheSparky 4 жыл бұрын
💯% I’ve got to go and look at the same fault at a job on Friday and it’s a tiled kitchen and using this method is brilliant as I’d usually just split the ring and work back. Cheers again David for a great video 👏🏻👍🏻
@Stop..carry-on
@Stop..carry-on 4 жыл бұрын
They want that socket on offpeak for the grow lamps haha
@shanginadildo
@shanginadildo 4 жыл бұрын
No other reason
@MICHAELALT0N
@MICHAELALT0N 4 жыл бұрын
Likely explains the insulation on the walls - reduce the heat loss/ thermal heat signature.
@zxkim8136
@zxkim8136 4 жыл бұрын
totally agree with you mate
@liammhodonohue
@liammhodonohue 4 жыл бұрын
😂 it all makes sense now
@jrrelectricalresourcing7315
@jrrelectricalresourcing7315 4 жыл бұрын
Really good video, probs just taught 99% of electricians how to narrow down a fault like that 👍👍👍
@TonyRule
@TonyRule 3 жыл бұрын
Surely not. I'm not an electrician - it's just common sense.
@petedelaney4440
@petedelaney4440 Жыл бұрын
Yes. I think these video should be shown to students learning Electrical Installation.
@jeremywashington3611
@jeremywashington3611 4 жыл бұрын
"there's the money shot" always so satisfying when you locate the fault 👌
@ssorcnivek
@ssorcnivek Жыл бұрын
Following you on this job meant that I shared the sense of triumph when you found the fault . Absolute magic . Thanks very much and well done .
@andrewmounsey5030
@andrewmounsey5030 4 жыл бұрын
Love the irony of the capping installed to protect from other trades has caused the damage.
@dsesuk
@dsesuk 4 жыл бұрын
Had he just clipped the cables to the blockwork, they would have been safer from his hammer-time!
@robertmorris6594
@robertmorris6594 4 жыл бұрын
May still have been plasterer or other that nailed that could have come loose and he fixed it
@PhilipHollowaychannel
@PhilipHollowaychannel 4 жыл бұрын
Thank you for leaving a video that actually shows you doing the fault finding. I found it very helpful
@dsesuk
@dsesuk 4 жыл бұрын
Thanks Philip, I'm glad it was of use.
@rodd8170
@rodd8170 4 жыл бұрын
@Mircea because its not live/phase.
@750kv8
@750kv8 4 жыл бұрын
@Mircea - Err, because compared to phase, there's a lot lower voltage in it referenced to Earth (still not quite zero I imagine). Not to be confused with the grounding (or earthing). Not a sparkie, so take my word with a lot of water.
@ManiacalMichael504
@ManiacalMichael504 4 жыл бұрын
Great work! We can definitely see why the customer "lost confidence" in the original installer & wouldn't let him continue.
@Ryan-nh8ef
@Ryan-nh8ef 2 жыл бұрын
This guy is a total electrical wizard, wow.
@morbid_spell6612
@morbid_spell6612 4 жыл бұрын
I'm a lv3 electrical student and This video taught me about fault finding more than what my own tutor has ever taught me , thank you!
@rubberlegs15
@rubberlegs15 4 жыл бұрын
Did you know you can calculate the distance to the fault too? Here is the calculation: The two readings (0.13ohms and 0.16ohms) represent the RATIO of distance to the fault from either end. An actual reading to the fault can be obtained by the following equation: (r1 / (r1+r2)) x Cable length (end to end) where r1 is resistance to fault from point 1, r2 is resistance to fault from point 2 and cable length is obtained by direct measurement (cable route known) OR calculated as David did in this video using the CPC and line conductor. For this example, the calculation is as follows: (0.13/(0.13+0.16)) x 4.2 = 1.88m from the point where the resistance was 0.13ohms the same works the other way: (0.16/(0.13+0.16)) x 4.2 = 2.32m from the point where the resistance was 0.16ohms.
@evguysltdianlawrie2274
@evguysltdianlawrie2274 4 жыл бұрын
That was an absolutely brilliant piece of detective work and one worth sharing as a lesson on how to work out a fault position and also, how not to install capping! Respect! 😁👍
@rubberlegs15
@rubberlegs15 4 жыл бұрын
The only part missing was the final calculation to get an actual reading of distance to the fault. Not that there is anything wrong with the faulting technique! The two readings (0.13ohms and 0.16ohms) represent the RATIO of distance to the fault from either end. An actual reading to the fault can be obtained by the following equation: (r1 / (r1+r2)) x Cable length (end to end) where r1 is resistance to fault from point 1, r2 is resistance to fault from point 2 and cable length is obtained by direct measurement (cable route known) OR calculated as David did in this video using the CPC and line conductor. For this example, the calculation is as follows: (0.13/(0.13+0.16)) x 4.2 = 1.88m from the point where the resistance was 0.13ohms the same works the other way: (0.16/(0.13+0.16)) x 4.2 = 2.32m from the point where the resistance was 0.16ohms..... Another method of locating faults like this is the use of a tone and amp (as used in data cabling) where a loud point can sometimes be heard using the amp without breaking the wall first. It doesn't always work but its a useful addition.
@petec8388
@petec8388 Жыл бұрын
Fantastic video and making good use of the regs book. Your well worth every penny. Great job.
@pistolpete5189
@pistolpete5189 4 жыл бұрын
That’s the oddest plastering job ever!! Looked more suited to the interior of a stable 😂
@piraat6666
@piraat6666 4 жыл бұрын
Maybe it is a a stable for humans.
@paintslinger70
@paintslinger70 4 жыл бұрын
"Cack-handed." I haven't heard anyone, other than myself, use that term since moving to Canada 30 years ago. Love it!
@dsesuk
@dsesuk 4 жыл бұрын
Plenty of cack-handedness and ham-fistedness occurring over here!
@spankeyfish
@spankeyfish 4 жыл бұрын
@@dsesuk If lots of people in your neighbourhood like nailing things to the wall and you don't already own them, drop £10-£15 on a claw hammer and carpenter's pincers.
@oliverriall
@oliverriall 4 жыл бұрын
The smugness when you found the fault without destroying the whole wall was just superb. Nicely done.
@dsesuk
@dsesuk 4 жыл бұрын
Imagine if I had found it in the first cut! I'd have tried to suck myself off on camera!
@markrowland5393
@markrowland5393 4 жыл бұрын
@@dsesuk I'm now desperately trying to get that image put of my head!
@dsesuk
@dsesuk 4 жыл бұрын
@@markrowland5393 I have Polaroids of prior attempts Mark. I'll send you a link...
@markrowland5393
@markrowland5393 4 жыл бұрын
@@dsesuk No, please no. Anything but that! It would put me off my frankfurter!
@rubberlegs15
@rubberlegs15 4 жыл бұрын
@@dsesuk I'm now wondering where I post the green pukey face emoji on here.....
@richardholdway9335
@richardholdway9335 4 жыл бұрын
Thank s Dave for making this lock down a bit happier with your fine sparky work
@eddiequevedo9315
@eddiequevedo9315 4 жыл бұрын
What an excellent video - nothing rocket science about it really just good old fashion fault finding method using sound principles. Bravo mate
@morkthebuilder9943
@morkthebuilder9943 3 жыл бұрын
This was a really interesting video. Fault finding genius at work. These type of vids are so useful. Thanks David
@TeepsBeats
@TeepsBeats 4 жыл бұрын
Brilliant video. Great to see some in depth fault finding. And thanks for sticking up for the young blood.
@APSuk2
@APSuk2 3 жыл бұрын
Excellent video thanks so much for taking the time to make it & post it up. Some brilliant information & techniques here, great to watch you work through the process.
@dazzafat
@dazzafat 4 жыл бұрын
I learnt so much from this video, to remain calm whilst fault finding is the key and slowly break it down methodically. I generally get in a right old flap when fault finding. Brilliant David catch you soon Electrical jedi at work
@dsesuk
@dsesuk 4 жыл бұрын
I like a good methodical fault-finding job. They can be a nightmare of course, but it's a great feeling when you determine the reason why things are happening and can correct it.
@briangreen8200
@briangreen8200 4 жыл бұрын
I can remember being shown the Wheatstone Bridge calculator method at college all those years ago to ascertain the approximate position of a fault in a cable. Seemed a complicated method but it did work on the fault that we were looking for.
@martinshaw462
@martinshaw462 4 жыл бұрын
We learnt that but can't remember it.
@spanishmarc
@spanishmarc 4 жыл бұрын
Thank you David for such an interesting and informative video on fault finding.
@sparkyruss4474
@sparkyruss4474 4 жыл бұрын
This is great, a purely logical approach to narrowing down the fault, thanks for the great content again.
@WOOD3NTR33
@WOOD3NTR33 3 жыл бұрын
Really good video. Definitely strengthens the case to test during the installation process, I know a lot of people that just rely on hope to pass testing after everything's finished. Enjoyed the mathematical way of finding the fault as well!
@realbartie
@realbartie 4 жыл бұрын
I absolutely love this kind of fault finding :) Great sense of satisfaction when you find it, and how close you were on the first attempt! Great video, and many thanks
@rubberlegs15
@rubberlegs15 4 жыл бұрын
You can get an actual number too if you drop the readings into this: The two readings (0.13ohms and 0.16ohms) represent the RATIO of distance to the fault from either end. An actual reading to the fault can be obtained by the following equation: (r1 / (r1+r2)) x Cable length (end to end) where r1 is resistance to fault from point 1, r2 is resistance to fault from point 2 and cable length is obtained by direct measurement (cable route known) OR calculated as David did in this video using the CPC and line conductor. For this example, the calculation is as follows: (0.13/(0.13+0.16)) x 4.2 = 1.88m from the point where the resistance was 0.13ohms the same works the other way: (0.16/(0.13+0.16)) x 4.2 = 2.32m from the point where the resistance was 0.16ohms.
@colincossey4527
@colincossey4527 2 жыл бұрын
BB k or
@train4905
@train4905 4 жыл бұрын
An absolutely superb job Dave.just brilliant old school thorough testing.well done sir.
@gusdogbrownlab435
@gusdogbrownlab435 3 жыл бұрын
Great video. Best one I had was a bloke who wired his loft lights by splicing into the 40A shower circuit with coaxial cable! Got all the wiring tidied up, new cable to the routed to the shower but had to break the news to him that his shower no longer recieves BBC 2!
@taftmh
@taftmh 4 жыл бұрын
In terms of the repair, I would put a 25mm box in between the run, wago the broken cable and blank plate it off Least that way it’s accessible for future reference
@josephkaz9093
@josephkaz9093 2 жыл бұрын
Agree. In some cases you can even add a socket so that at least the fuckup provides some utility over a blank plate.
@kerravon5547
@kerravon5547 2 жыл бұрын
Agree with both these methods of repair.
@1992jamo
@1992jamo 2 жыл бұрын
I'd be pretty careful about doing that. I'm not sure that would be considered maintenance free.
@ashleypowell1623
@ashleypowell1623 4 ай бұрын
​@@1992jamoit doesn't need to be maintainance free as is accessible by removal of blanking plate.
@P.J.B_electrical
@P.J.B_electrical 4 жыл бұрын
Hi david , absolutely love the videos . I am an apprentice electrician and im learning loads watching your videos . They are helping me massively with all the tips and bits of knowledge you have shared with us. Many thanks.
@rubberlegs15
@rubberlegs15 4 жыл бұрын
John Ward and Sparky Ninja also put out some good content. I didn't realize these videos helped so many people, perhaps I'll chuck a couple in of my own some time. Here is how you can turn the raw numbers into an actual measurement to the fault: The two readings (0.13ohms and 0.16ohms) represent the RATIO of distance to the fault from either end. An actual reading to the fault can be obtained by the following equation: (r1 / (r1+r2)) x Cable length (end to end) where r1 is resistance to fault from point 1, r2 is resistance to fault from point 2 and cable length is obtained by direct measurement (cable route known) OR calculated as David did in this video using the CPC and line conductor. For this example, the calculation is as follows: (0.13/(0.13+0.16)) x 4.2 = 1.88m from the point where the resistance was 0.13ohms the same works the other way: (0.16/(0.13+0.16)) x 4.2 = 2.32m from the point where the resistance was 0.16ohms.
@selectricalservices3235
@selectricalservices3235 11 ай бұрын
It’s Friday night and I’m at home learning. What a detective masterpiece. 🎉🤣
@davidroche6973
@davidroche6973 4 жыл бұрын
Hey David, am so glad you are enjoying my new ring random socket install process I like to call it the Leg multiple area output (or LMAO) method, it's good to see its keeping you on your toes and thanks as ever for sorting out my historic death traps, may I long keep you in gainful employment 😘
@keyurpatel5042
@keyurpatel5042 4 жыл бұрын
Hi David, I never comment on anyones videos but this blew my mind on how informative this video is for a Sparky who is coming into the trade. Well done and please keep up the videos. you're doing a great job and an amazing Down to earth Sparky! can't wait to see more.
@dsesuk
@dsesuk 4 жыл бұрын
Thanks Keyur, I'm glad my babble is of use!
@keving10254
@keving10254 4 жыл бұрын
You are a braver man than me, I would have walked away!
@MysticShiv3r
@MysticShiv3r 4 жыл бұрын
Great Video chief. Entertaining, informative & educational. I expected nothing less!
@smoggydrones5664
@smoggydrones5664 3 жыл бұрын
I’m not a tradesman but enjoy watching “professionals” at work. It is worrying how standards vary between electricians . Very impressed how you used maths to work out roughly where the fault was. Well done 10/10 AAA+
@pmpl66
@pmpl66 4 жыл бұрын
Good work Dave. Great fault finding... back to basics. I’ve used that method before 10/10. If you are a potential customer out there watching this and reading these comments.... BE PATIENT, PAY THE GOING RATE, CHECK RECOMMENDATIONS. Oh and count yourself very lucky if a Pro gives you another chance after a cowboy.
@AshleyWilliams12345
@AshleyWilliams12345 2 жыл бұрын
It’s not an ideal situation, but I would add two extra sockets.
@sberry25
@sberry25 4 жыл бұрын
Fantastic video, one of your best in my opinion. Thank you!
@dsesuk
@dsesuk 4 жыл бұрын
Best of a bad bunch!
@rubberlegs15
@rubberlegs15 4 жыл бұрын
@@dsesuk I hit like on your comment. I feel a little guilty now, acknowledging it with a like almost seems like I'm agreeing with you!
@rustystuf
@rustystuf 4 жыл бұрын
@@rubberlegs15 So you keep saying!
@linksone6287
@linksone6287 4 жыл бұрын
Mate. Absolutely phenomenal! Really educational this video. Cheers David👍🏾👍🏾👍🏾😉
@fatblokes_ferguson
@fatblokes_ferguson 4 жыл бұрын
I've learnt so much from this, not only the test method but how you can't always be confident that something that has been done by a sparks it doesn't mean it's done right. 👍👍
@esfae8250
@esfae8250 4 жыл бұрын
This was a great watch. Love the process of elimination to find this fault. Honest Work by an Honest Spark.
@jayzeebeezee7442
@jayzeebeezee7442 4 жыл бұрын
WTF!! One of the biggest can of worms I've ever seen. Rather you than me David. Good luck to you fellah. Beats me what some people are thinking about.
@michaelcox4081
@michaelcox4081 4 жыл бұрын
I definitely enjoy your method of approach in finding and sorting this fault out. Spot on vid cheers dude, I should be paying you a fiver for the lesson👍🏻
@Darchy14
@Darchy14 10 ай бұрын
Fault finding from beginning to end and pretty much "nailing" (lol) the position to minimise damage was such a satisfying watch. Well done sir.
@Chris-vc6bn
@Chris-vc6bn 3 жыл бұрын
OMG it’s not only a video it’s an education nice work 👍
@ChippyTobin
@ChippyTobin 4 жыл бұрын
Very interesting video, I will be showing this to my students in Year 3.
@dsesuk
@dsesuk 4 жыл бұрын
Sorry for the bad language!
@andrewmounsey5030
@andrewmounsey5030 4 жыл бұрын
@@dsesuk I think the language along with "cowboy slagging" will keep them enthralled; no doubt the students could teach you a few more swear words anyway. Please keep up the good work of making the conscientious amongst us feel much better about making the effort to do a good job and highlighting just how bad some timed served tradesmen really are. I would have gone to the same effort to reduce the repair as you did but left feeling that most wouldn't have done and am I the only idiot making so much effort for a client who probably won't appreciate the care; turns out I'm not! As for the plastering....WTF!! I've seen similar done on external rendering (which you generally don't try installing backboxes into) but never inside. Did I see hoof marks in the lower corner of the living room?
@Tomoose1985
@Tomoose1985 4 жыл бұрын
Sir, what's a pink oboe? 🤣
@dsesuk
@dsesuk 4 жыл бұрын
@@Tomoose1985 See me after class in the detention room boy!
@nigellewis4686
@nigellewis4686 4 жыл бұрын
Add extra socket
@adcuz
@adcuz 4 жыл бұрын
Amazing fault finding! Thanks for making these videos
@wilfvoss
@wilfvoss 4 жыл бұрын
Really interesting and a great bit of work... Nice to see that, sometimes, the math's don't lie!
@garethhodson3896
@garethhodson3896 4 жыл бұрын
Really good fault finding - I’ve used a similar method in the past
@dsesuk
@dsesuk 4 жыл бұрын
Cheers Gareth!
@ShaunOllerton
@ShaunOllerton 4 жыл бұрын
I'm not an electrician,(i did pass 17th edition a few years back) but the times i've heard,"Well i've been doing this job for years" really winds me up
@johnmcquay82
@johnmcquay82 4 жыл бұрын
I work in Telecommunications, and the same argument is used by Telecom "Engineers" too. I was speaking to a guy from a popular ISP about a problem he thought he had with his test device; the only problem with the device was the person using it. They didn't have a clue how to use a TDR, despite the fact they thought I (the young whippersnapper) didn't know what he was talking about...
@Camberwell86
@Camberwell86 4 жыл бұрын
It's not just tradies. Just go to your local Co-op or Spar. Every Co-op/Spar I go into up and down the country (I travel a hell of a lot) has some 50+ scatty bint who is slow and useless and a team of 18-30 year olds carrying the place. Every single one without exception
@rubberlegs15
@rubberlegs15 4 жыл бұрын
@@johnmcquay82 Good old time domain reflectometry! I've used it many times when I worked for BT. Bridge tests are another useful tool as are walkovers for earth contact faults.
@smitcher
@smitcher 4 жыл бұрын
@@johnmcquay82 OpenReach seem to be hiring the worst kind of muppets these days. We had a new BT line fitted from a pole to the house at back but he had to run cable round side of house to front for entry. Turned up at 11am and was still here at 8:50pm in the dark, with a head torch, up a ladder clipping the cable to the side of the house. He must've been about 17. Next day in the light you can imagine how straight it was. Ended up having to straighten the cable myself months later. Better still, the line never worked and weeks later we got fully refunded and went back to Virgin broadband.
@Stop..carry-on
@Stop..carry-on 4 жыл бұрын
Camberwell86 i bought a coffee from a spar late feb just before corona virus kicked off and had some silly woman in her 50s try and charge me twice because the coffee cup i used was stuck to another, when i said ill leave the coffee then she said “you cant do that “( ..well you cant stop me) then preceded to put her hands all over the lid and container cup in an attempt to remove the stuck cup off while spilling the drink and conceded they were infant stuck. I reminded her about the virus in circulation.
@jasonbillington3923
@jasonbillington3923 4 жыл бұрын
absolutely brilliant video how you found that with the calculation is amazing. great work. plus great videos
@simonkeell4502
@simonkeell4502 4 жыл бұрын
Love your videos always learn loads, and a great delivery as well. 👏👏👏
@markhoulding1938
@markhoulding1938 4 жыл бұрын
Topman Remember when you did another job and the customer moaned at your price because of the short time it took you to do the job obviously not taking into account your expertise, so potentially your saved that customer additional costs on the plasterers making good Great to watch pal 👍
@pauljones908
@pauljones908 4 жыл бұрын
Ive heard of wiring a ring on every second socket to.. its to do with keeping the cable lengths equal as 'current runs down the path of least resistance' so if you have a heavy load at the furthest point the current should be equal 'or there abouts' between both legs of the ring main.. Apparently..
@johnburns4017
@johnburns4017 4 жыл бұрын
Yes correct. If you have a ring that has 2.5mm from the CU daisy chained to all the sockets and the length is quite long, with the end socket having one uninterrupted cable back to the CU forming the ring, the 1st & 2nd sockets on heavy loads can put too much load on the cable from the CU to the 1st socket. Line of least resistance. If there is not going to be any heavy appliances on the ring as they are in the kitchen on separate circuits, then daisy chaining, as per normal, is fine.
@highgatehandyman6479
@highgatehandyman6479 3 жыл бұрын
Good source of info. Thanks for the time taken to film and explain the issue
@1700iDiGuy
@1700iDiGuy 2 ай бұрын
That plasterwork looks like a landlord special to me
@cprfenom
@cprfenom 4 жыл бұрын
I was taught that same method as it helps avoid a long return leg, but for fault finding its a pain in the a**e!
@nickytesla1596
@nickytesla1596 3 жыл бұрын
How does it? One leg goes to the nearest socket heading in one direction, and the other leg goes to the second nearest socket going in the other direction.
@shallowfakes593
@shallowfakes593 4 жыл бұрын
this smacks to me as a client changing what they wanted after an initial install maybe
@peterbradley4916
@peterbradley4916 4 жыл бұрын
thats wat i thought!
@edwardcat5247
@edwardcat5247 3 жыл бұрын
agreed. first thing I thought. with jumping around and backtracking...
@pkllogjri2441
@pkllogjri2441 3 жыл бұрын
Most electricians would make a total mess. A little bit of ingenuity makes a huge difference. You just won at least a subscriber. Respect 🙌
@falafel3499
@falafel3499 4 жыл бұрын
Really good video thanks for showing the fault finding process start to finish and the repair
@NivagSwerdna
@NivagSwerdna 4 жыл бұрын
So the plaster is held on by magic? The whole place looks like a future full of pain.
@Ragnar8504
@Ragnar8504 4 жыл бұрын
@Dan Didnot It's supposed to stick to the board (which it doesn't really seem to do), the mesh's just there to keep it from cracking if the board shrinks or expands with changes of humidity. Some modern plasters stick ok to the weirdest surfaces - polystyrene boards being one of the more common ones in central and eastern Europe. All it takes to destroy it is a woodpecker though - or a bicycle handlebar. Or a door handle.
@IgnatyDyakov
@IgnatyDyakov 4 жыл бұрын
well, fault in plasterer's work, as he lay plaster too thinly and left too long between coats, so the first one was dry by the time he put mesh in. It has to be redone properly now.
@jontownsend8090
@jontownsend8090 4 жыл бұрын
I thought my plasterer did a shoddy job for me years ago, but this is on another level. If i had my wife up the wall, we would be covered in dust, and also doing it in the dark because the E7 kicked in and tripped the rcd.
@smitcher
@smitcher 4 жыл бұрын
@@Ragnar8504 No, it is supposed to stick to the board, the plasterer just didn't have a clue what he was doing. You are supposed to butter the fibreboard BEFORE putting on the mesh and then the mesah goes on and it's even usually doubled up in areas that you mention could be ploblems , like the seams. This guy knows what he is doing - kzfaq.info/get/bejne/sNCTgc5lv8W7pnk.html
@smitcher
@smitcher 4 жыл бұрын
Meant to say, i've even seen a plasterer turn up with their kid and send him around staplegun-ing the mesh on to the walls (with no adhesive) while he has a smoke (and a beer probably) outside... The British guy had quoted "Polish rates" apparently but any truely Polish plasterers i've dealt with have always done a fantastic job, they know what they are doing and they take pride in their work...
@AngloSaxonFreeBritain
@AngloSaxonFreeBritain 4 жыл бұрын
He has staggered his sockets. But would have been easier to just perimeter ring it in that installation.
@abuhaqq
@abuhaqq 4 жыл бұрын
You're a genius! The way you diagnosed that fault is just on another level. Hats off to you Sir! A job well done.
@dsesuk
@dsesuk 4 жыл бұрын
Very kind, thank you.
@abuhaqq
@abuhaqq 4 жыл бұрын
@@dsesuk And I love your humour. Cracks me up everytime!
@cosmicazur
@cosmicazur 2 жыл бұрын
That is fantastic way to figure out a fault. Genius!
@craighawkinsch
@craighawkinsch 4 жыл бұрын
Assuming the fault is equal on both legs, which it was.... You could have calculated the fraction of the fault along the length of it.... I can't recall the continuity values between N-CPC.... I think it was 0.13 and 0.16.... Expressed as a whole, thata 0.29.... Therfore 0.13 / 0.29 is approx 45% the length of cable.... Which is 1.88m of the 4.2m length .... Do that and mark out that location on the wall for both lengths 1.88m from socket A 2.32 from socket B, should put you in I good position for finding faults. Instead of measuring r1+r2, I'd have done a long lead test on the line conductor as that wasn't damaged to ascertain the length of cable.... As for the repair, crimp with staggered joins and heatshrink each conductor aswell as entire length of joint with larger heat shrink... Each to thier own
@dsesuk
@dsesuk 4 жыл бұрын
Thanks Craig, I'm liking the thinking. With regard to heat shrink, it's the larger size I lack on the van, otherwise I would have been more disposed to have done it that way on the day.
@johnmcquay82
@johnmcquay82 4 жыл бұрын
A very common fault finding method in Telecoms this is; resistive fault locator RFL (some call it a bridge test). It would be a handy tool to have on a Sparky's meter.
@craighawkinsch
@craighawkinsch 4 жыл бұрын
johnmcquay82 also know as a TDR? Time domain reflectometer?
@Raysnature
@Raysnature 4 жыл бұрын
@@craighawkinsch No TDR relies on the reflection time of an injected pulse. TIME Domain REFLECTometer or OTDR (Optical TDR) for fibre. What johnmcauay82 is referring to is essentially comparing ratios of resistance values. It's based around the principles of a wheatstone bridge and is very common in both the telecom industry but also used a lot by the distribution people to locate issues on underground networks. For what it's worth I was a bit of a cross over. Many utility companies including the one I worked for ran their own telecom networks; I was an electrical engineer working within the internal telecom department. Interesting job.
@dancrawford2690
@dancrawford2690 4 жыл бұрын
David I used to wire rings in this way some 30 odd years ago, it was the norm back then , in one miss one , I was taught to do it this way when you had a dead end wall and have to come back on yourself rather than looping over to the board
@dsesuk
@dsesuk 4 жыл бұрын
Cheers Dan, it's not a method I've come across before so interesting to see it in action! I knew there had to be a reason behind it!
@s.kxx1956
@s.kxx1956 4 жыл бұрын
Yeah, the ‘older’ guys i work with do this, it makes sense in a large trunking run but i like to do it the conventional way as much as i can so its more logical when testing.
@dsesuk
@dsesuk 4 жыл бұрын
@@s.kxx1956 Not seen so much domestically it seems, which is why I've perhaps not come across it before.
@richardburgess6040
@richardburgess6040 4 жыл бұрын
Great, wonderful, not enough gags as usual, but you've 'nailed' it with this one DS. Such a great explanation of calculating resistance and working out the distance to find the fault. 🤛💪💥
@rubberlegs15
@rubberlegs15 4 жыл бұрын
It was a great vid but he did miss that actual calculation to the fault at the end. He probably had enough to get close as the fault was close to the centre but just how far of centre? That can be worked out as follows: The two readings (0.13ohms and 0.16ohms) represent the RATIO of distance to the fault from either end. An actual reading to the fault can be obtained by the following equation: (r1 / (r1+r2)) x Cable length (end to end) where r1 is resistance to fault from point 1, r2 is resistance to fault from point 2 and cable length is obtained by direct measurement (cable route known) OR calculated as David did in this video using the CPC and line conductor. For this example, the calculation is as follows: (0.13/(0.13+0.16)) x 4.2 = 1.88m from the point where the resistance was 0.13ohms the same works the other way: (0.16/(0.13+0.16)) x 4.2 = 2.32m from the point where the resistance was 0.16ohms.
@tubejogger
@tubejogger 4 жыл бұрын
Great video Dave and excellent learning / refresher material. That ring circuit would have had me thinking WTF as I've never come across it . Always learning. Good to keep an open mind (not an empty mind ) . Stay safe 😷
@dsesuk
@dsesuk 4 жыл бұрын
Thanks, that was a new one for me too, although it seems leap-frogging is common in commercial installs, especially dado arrangements.
@GiffordsElectrical
@GiffordsElectrical 4 жыл бұрын
You obviously not hungover enough to be out that early 😂. Another cracking video to boot
@bryceonyoutube
@bryceonyoutube 4 жыл бұрын
Cracking video quite literally!!!!
@dsesuk
@dsesuk 4 жыл бұрын
Cheers Craig
@rubberlegs15
@rubberlegs15 4 жыл бұрын
Early? It's daylight! That's not early!
@AndrewGillard
@AndrewGillard 4 жыл бұрын
At least all the negative comments "boost engagement", as the Technology Connections channel host says! 😉
@chumaninxazonke117
@chumaninxazonke117 4 жыл бұрын
Super cool calculation you did to determine more or less where the fault was. That was very accurate, even though you chase another spot. I don't remember learning that @ college. 10/10! You deserve a "Big Mac" burger. your cap says it all!
@chrischandler1420
@chrischandler1420 4 жыл бұрын
Great video David very funny but very informative indeed keep up the good work
@michaelbellis2279
@michaelbellis2279 4 жыл бұрын
Money aside, looks like you’ll regret taking this on board.
@phillipgwynne6580
@phillipgwynne6580 4 жыл бұрын
Why doesn’t metal capping come pre-drilled on the flat parts away from where the cable would pass so that all that’s needed is nails/screws go through the holes?
@dsesuk
@dsesuk 4 жыл бұрын
Y'know, I've often said that when I'm a millionaire, I'll build a factory to churn out things that will make life easier for the sparkie including capping with a perforated edge!
@Mattja1
@Mattja1 4 жыл бұрын
@@dsesuk can't come soon enough. While you're at it have some art-y types make their fancy decorative lights and bin 'em until they leave space for more than a single 1mm T&E!
@rsdelectrical
@rsdelectrical 2 жыл бұрын
Absolutely fantastic fault finding there 👏🏻 can’t believe that’s me just getting involved with the channel but will be binge watching the rest over the coming days and weeks
@dsesuk
@dsesuk 2 жыл бұрын
Welcome to the awfulness!
@brianwood5220
@brianwood5220 4 жыл бұрын
Great job Dave. Exactly what i would have done. Hope you and your family are keeping safe.
@dsesuk
@dsesuk 4 жыл бұрын
All good this end, thanks Brian! Stay well.
@ericthekingthekingtheking4842
@ericthekingthekingtheking4842 4 жыл бұрын
Outstanding effort inspector savery or should that be sherlock OHMS 🤣 twatson would agree im sure
@MarcusT86
@MarcusT86 4 жыл бұрын
Missed opportunity to say, "Dr Wattson".
@danielelise7348
@danielelise7348 3 жыл бұрын
I think Twatson went Ohm 😁elementary my dear boy!!
@olly395
@olly395 4 жыл бұрын
Hi David, Great vid, I think you could have used the ratios of the resistances from each end to calculate the 'exact' position eg 4.2m / (0.13+0.16)) * 0.13 = 1.88m from one end of the wire or 4.2m / (0.13+0.16)) * 0.16 = 2.32m from the other end.
@dsesuk
@dsesuk 4 жыл бұрын
When I go back for second fix, I'll have to do some measurements to see if this checks out Olly. There's only so much maths I can cope with, but had I thought about it this might have worked! I'd have looked like a hell of a smartarse then!
@rubberlegs15
@rubberlegs15 4 жыл бұрын
@@dsesuk Olly is right! Of course with a fault that is NOT a full short, the measurement can wander and this can give inaccurate results.
@hexdator2934
@hexdator2934 Жыл бұрын
@@dsesuk You're already a chad, a master!
@mykotliazad
@mykotliazad 2 жыл бұрын
bravo, very impressed with the way you traced the fault location, a brilliant bit of math work, well done.
@wayneedwards1418
@wayneedwards1418 4 жыл бұрын
Really great video my apprentice will love this. Hate taking on other peoples work but needs must 👍👍
@tomorichard
@tomorichard 4 жыл бұрын
Still find it strange why people use capping over oval tube. Seems like such hard work and such risk of damage to cables
@dsesuk
@dsesuk 4 жыл бұрын
It's okay I guess if you know how to knock a nail in!
@tomorichard
@tomorichard 4 жыл бұрын
David Savery Electrical Services true true
@dave-d
@dave-d 4 жыл бұрын
Could be the plasterer has a reputation! There are electrical reasons for not using it at all in my opinion.
@warren1134
@warren1134 4 жыл бұрын
I thought you might have checked the capping for continuity as soon as it was exposed to confirm which on of the cappings, if any may have been suspect
@dsesuk
@dsesuk 4 жыл бұрын
I probably would have done if that nail hadn't stuck out as a likely cause. I knew it had to be something like that I was looking for, and if I hadn't found it by the time I opened up the other marked section of wall then I'd have taken further steps to try and narrow it down.
@craigemmott4976
@craigemmott4976 4 жыл бұрын
@M H they would all disagree with each other. 10 sparks, 10 different methods.
@jollyfinequality9865
@jollyfinequality9865 4 жыл бұрын
@@craigemmott4976 I disagree... 😆
@craigemmott4976
@craigemmott4976 4 жыл бұрын
Jolly Fine Quality 🤣
@FrontSideBus
@FrontSideBus 4 жыл бұрын
@M H Nothing as they'd be too busy taking the piss and slagging each other off lol
@TheRotax100uk
@TheRotax100uk 3 жыл бұрын
Excellent Video.. very very clever and you have taught me something new today, im not a spark but a refrigeration engineer so we face similar problems with fault finding and this was just gold!! top man.
@brizy231977
@brizy231977 4 жыл бұрын
Bloody good job! On rectifying this shameful attempt at 1st fix... Really enjoyed watching this well presented informative video..
@ThomasDiy
@ThomasDiy 4 жыл бұрын
39:00 Me personally I would probably install receptacle, go over a few feet cut another hole and install another receptacle box. Put a new piece of wire between the two.
@Syelectrical
@Syelectrical 3 жыл бұрын
But why would you do that? 2 joints and more work.
@AndyK.1
@AndyK.1 4 жыл бұрын
Charge phone on off peak 😂
@dsesuk
@dsesuk 4 жыл бұрын
Might save enough to buy a cup of coffee by Christmas!
@Ivorbiggin
@Ivorbiggin 4 жыл бұрын
David Savery Electrical Services In what year would that be Dave 😀 keep up the good work
@richardwilliamson3624
@richardwilliamson3624 4 жыл бұрын
Possibly also against suppliers rules for off peak tariff usage?
@misstakenot9582
@misstakenot9582 4 жыл бұрын
@@dsesuk I doubt it. I saw a calculation recently showing the cost of charging a phone for a year to be about 60p. Running laundry equipment off-peak is a good idea, but not, of course, on a final circuit shared with a heater.
@FrontSideBus
@FrontSideBus 4 жыл бұрын
I’d be charging a bank of big marine batteries overnight on the cheap rate and then using an inverter to power the house during the day :)
@tomasnewson6744
@tomasnewson6744 2 жыл бұрын
This is really interesting. Good to see the maths that I’m doing in college being put to use on site 👍🏻 definitely subscribing 👍🏻
@markg7702
@markg7702 4 жыл бұрын
Well thought out way of finding that fault with minimum damage thanks for uploading
@dsesuk
@dsesuk 4 жыл бұрын
Glad it was helpful Mark
@7chappers
@7chappers 4 жыл бұрын
Hi David, Where I did my apprenticeship one of the sparks did it this he called it frog looping I believe. He did it in trunking as it saves bringing a leg all the way back down the length of trunking. Hope you and Nige are keeping well
@dsesuk
@dsesuk 4 жыл бұрын
Thanks Jordan. It isn't a method I've come across in my time (perhaps surprisingly), but from the sound of it seems to be more common in trunking than when buried in the wall?
@7chappers
@7chappers 4 жыл бұрын
Makes more sense in trunking I’d say but in a house? Seems move of a pain
@kerravon5547
@kerravon5547 2 жыл бұрын
i have seen this in new builds & its a pain in the ass to fault find, especially between rooms. I believe this method mainly comes from industrial installations, where you have a row of sockets installed in trunking or conduit.
@davepusey
@davepusey 4 жыл бұрын
As soon as I'd seen that fiberboard on the walls I think I would have walked away. Looks like a major fire hazard to me.
@kissarmy1347
@kissarmy1347 4 жыл бұрын
You made me think there as I'm considering using it so I did a quick bit of research, I know this is probably not the exact product used but t should be similar. Far better than I was expecting, video is worth checking out. www.steico.com/en/steico-benefits/fire-protection/
@Ragnar8504
@Ragnar8504 4 жыл бұрын
@@kissarmy1347 I think it's actually the very same product. I'd be more concerned about the plaster falling off after watching this video!
@IgnatyDyakov
@IgnatyDyakov 4 жыл бұрын
@@kissarmy1347 Correct, it is Steico.
@IgnatyDyakov
@IgnatyDyakov 4 жыл бұрын
@@Ragnar8504 well, there wasn't much luck with tradesmen here, sadly, hence plastering is being done again by proper professionals, recommended by the plaster manufacturer, so fingers crossed it will stay.
@gerryslater4297
@gerryslater4297 3 жыл бұрын
Just got into your videos. They piss all over all the others. A great laugh backed up by knowledge and good practice. Whatever you’re charging, double it. 👏
@dsesuk
@dsesuk 3 жыл бұрын
Roger that Gerry, I'm going to £4.50 an hour right away!
@M0LHA
@M0LHA 4 жыл бұрын
Excellent work Doctor Twatson!
@dsesuk
@dsesuk 4 жыл бұрын
Elementary my good man!
@barrybritcher
@barrybritcher 4 жыл бұрын
The night time socket for growing cannabis
@dsesuk
@dsesuk 4 жыл бұрын
I hope their grow-lights don't need too much current.
@abdoaiman
@abdoaiman Жыл бұрын
Every day I learn something new.. Love the scientific ways finding faults which is great enabling electricians use these books.. Thanks alot for sharing your knowledge with others ❤
@thetruth6693
@thetruth6693 Жыл бұрын
Love vids like this Dave 👏 You make it look and sound so simple
@coralbay00
@coralbay00 4 жыл бұрын
😳 take a bow sir. Thank you for sharing your skills DID (DETECTIVE inspector DAVE) very useful trick taken down for future reference
@dsesuk
@dsesuk 4 жыл бұрын
I'm polishing my bobby's helmet as we speak
@coralbay00
@coralbay00 4 жыл бұрын
@@dsesuk well you did say hand job at the end of the vid 🤦‍♂️
@n4thb4dc0
@n4thb4dc0 4 жыл бұрын
I come across "tradesman" all the time who say they have been doing a job for so many years It just means that they have been doing it wrong for so many years The number of years you have been working isn't an excuse for your bodgery
@highpath4776
@highpath4776 4 жыл бұрын
40 years ago was 1980 , that was when the rot set in.
@dave-d
@dave-d 4 жыл бұрын
Amen.
@frankmcalinden3699
@frankmcalinden3699 4 жыл бұрын
Great Detective work Dave ....or should i say Mr Holmes ...lol...keep em coming...
@deanpaterson301
@deanpaterson301 4 жыл бұрын
Probably one of the best videos i've watched in a long time, methodical way of going about, i'd have lost my rag and had the multi tool out in about 4 minutes, learnt a lot, thank you!!
@dsesuk
@dsesuk 4 жыл бұрын
Haha! Rest assured the multitool and hammer were both primed for action if the deductive reasoning didn't work out!
@deanpaterson301
@deanpaterson301 4 жыл бұрын
David Savery Electrical Services 😁
A proper builder's breakfast
33:38
David Savery Electrical Services
Рет қаралды 29 М.
Client says I'm too pricey...
16:46
David Savery Electrical Services
Рет қаралды 62 М.
DAD LEFT HIS OLD SOCKS ON THE COUCH…😱😂
00:24
JULI_PROETO
Рет қаралды 12 МЛН
Smart Sigma Kid #funny #sigma #comedy
00:25
CRAZY GREAPA
Рет қаралды 36 МЛН
That's how money comes into our family
00:14
Mamasoboliha
Рет қаралды 12 МЛН
Genius Life Hacks That Work Extremely Well
21:40
WOW Tech
Рет қаралды 204 М.
5 Deadly Hidden Electrical Faults
23:56
Artisan Electrics
Рет қаралды 101 М.
The £85 EICR.... of pants
46:39
David Savery Electrical Services
Рет қаралды 60 М.
Exciting new SPD installation - with cock-up!
37:07
David Savery Electrical Services
Рет қаралды 171 М.
Can electricians LEGALLY pull a DNO Fuse? - Electricians Podcast
52:39
ELECTRICIANS PODCAST
Рет қаралды 26 М.
Working around a fault unfound
30:05
David Savery Electrical Services
Рет қаралды 20 М.
Bloody Brummie CU Changeout
34:57
David Savery Electrical Services
Рет қаралды 26 М.
The trip trap that trips up testers
28:09
David Savery Electrical Services
Рет қаралды 30 М.
Waffly Consumer Unit Upgrade
1:23:11
David Savery Electrical Services
Рет қаралды 56 М.
ГОСЗАКУПОЧНЫЙ ПК за 10 тысяч рублей
36:28
Ремонтяш
Рет қаралды 455 М.
ОБСЛУЖИЛИ САМЫЙ ГРЯЗНЫЙ ПК
1:00
VA-PC
Рет қаралды 2 МЛН
Battery  low 🔋 🪫
0:10
dednahype
Рет қаралды 11 МЛН
Телефон-електрошокер
0:43
RICARDO 2.0
Рет қаралды 1,3 МЛН