Fault Finding an Electrical Lighting Circuit - Expert Electricians Top Tips

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Fault Finding an Electrical Lighting Circuit - Expert Electricians Top Tips
The rodents are back at it again! On this episode of Artisan Electrics John returns to a previous client, to take us through an in-depth fault find on a tripping circuit. The fault's culprit is a rodent that has gotten very hungry again! With no way to access the loft space above, will the damage caused result in another full rewire for the customer...
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Fault Finding Electrical Circuits - • Fault Finding Electric...
I Didn't Expect That! Fault Finding - • I Didn't Expect That! ...
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⏱️Timestamps
00:00 Completely Chewed
02:46 Further Testing
06:26 First Signs
11:19 Live Test
15:46 Fault Finding 101
18:29 Diagrams
21:27 Fearless Leader
23:30 Getting Closer
28:11 Hungry Squirrel
32:32 FLIES
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28 июн 2024

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Комментарии : 175

@hourglass899 Год назад

That is a super clear teaching video on fault finding - John is very good at explaining how things work!

@democracyforall Год назад

So many wires in the switch mean the plat system is in the switch rather than the celing rose?

@richyc2397 Год назад

You really don’t get anywhere as much recognition as you deserve in the RU-vid world mate! By far in my opinion one of the best RU-vid sparks I love watching! Thank you for your knowledge and ability to converse that perfectly to the audience! Your a legend

@tankhn419 7 дней назад

I’ve been struggling so much on lighting faults it’s my one weakness I just can’t seem to get over. But watch you do that as made so much more sense to me. Unfortunately both faults I’ve had this week have been from the db to the first point. It’s been a nightmare honestly. Thank you mate you’re a legend.

@adamsmithelec Год назад

Just got home from an 8 hour day working on a rewire and now watching someone else doing electrical work whilst eating my lunch! Can't get enough of it apparently!

@jordanclayton7913 Год назад

It's people like you that make great hires, and one day possibly business owners. Keep that drive to learn with every day!

@messageobliquespe100 Год назад

Great vid. I’d suggest the easiest/safest/cheapest thing to do is to change the lighting system so that you don’t use/rely on any cables within the roof joist zone. Design an LED strip lighting system to soffit / walls/ false dado rails & some floor lighting etc etc. There are some clever people that do this for a living I’ve heard!

@titmando1199 Год назад

Or try quinetic

@alsanova Год назад

Yeah, alternatively customer can go for surface mounted cable trunking / conduits and spotlight bars along flat ceiling.

@corymac Год назад

I’m here for the thumbnail! 😂👍🏼 - brilliant

@arsenalftw1 Год назад

Might be worth investing in a borescope, would help fault finding in tight places

@stephen271 Год назад

This is probably one of the best videos I have seen on how you explained the process on fault finding and how things work 👍 thank you

@peterthomas9440 Год назад

Great video on troubleshooting - even if it means some serious building work for the client to remediate. If the new cable tested out ok and you felt the rest would be even worse, why not condemn the entire circuit as a serious short/fire risk? Also - anyone else spot Lee doing his Three Men and a Baby ghost impression?

@patriciamenhennett2035 Год назад

I'm a committee tech in Australia . I use red tape to identify the incoming power. Also l use a tdr (time delay reflexomiter) to locate the fault location. Also l install cables in conduit when wiring in confined spaces.

@JasonEDragon Год назад

Similar to how I commented on the last video, I think that you have to assume other cables in the ceiling are damaged and I wouldn't reconnect them. I wouldn't have fixed any existing wiring until the rodent issue was positively identified and corrected. If they absolutely needed ceiling lights then I would have offered to install a brand new surface mount metal conduit lighting circuit using no existing wiring back to the consumer unit as the only option. Actually, I'd have my doubts about the wiring in the walls at this point and say resolve the rodents first. You re-energized part of the lighting circuit after showing the damage, documented it on RU-vid, and now you could be responsible if there is a fire.

@stevejagger8602 Год назад

It is very difficult to stop rodents entering roof voids like this one - they need so little space to get in. There should only be metalclad containment within these spaces. Re-energising any of this wiring is risky even with the additional protection of the RCD.

@juleswombat5309 5 месяцев назад

Excellent explanation on the diagnosis. It's just depressing for the homeowner that he has to rip all the ceiling down, and do a rewire. That is the frustration we have with electrics and electricians. Flipping mice and squirrels.

@alextripp1230 Год назад

Wow, that was intense fault finding, found it very interesting as a non electrician. Quite worrying that it could in fact test out OK even in that knawed condition though.!! Alex.

@iainball2023 Год назад

I have only found your channel recently. My loss ! I run a vehicle workshop, and my passion is auto electrics. So many similarities, yet so many differences. I'm happiest building bespoke engine management looms, multiple voltages, signals, sensors, sometimes 100+ conductors . You would think that mains stuff would be simple, but I have never completely got my head round it. Your videos bring a beautiful clarity to people of technical mind. I have learned more from your work in the last week than I have in the last twenty years. This video didn't particularly teach me anything, but from a very fussy technical person, I would like to congratulate particularly John for a brilliant run through of the processes involved in diagnosing something like this 👏 👍 proper job mate. Also awesome to see the level of care and pride in the standard of work you guys turn out. Even better your only up the road !! I wish you all every success in 2023!!

@thetruth6693 Год назад

His testing and fault finding knowledge is just something else! 👌👌👌

@stevejagger8602 Год назад

Thank you John. Good work logically isolating the faulty sections of cable. Scary to think how much unseen and inaccessible cable under floors, in lofts, and overboarded ceilings, like the ones in this video, could be rodent damaged, yet still test good.

@danf6491 Год назад

I would have put armoured in. Or look at a recessed surface mounted option. As a last resort conduit . Great video , gonna give this one another watch later

@Ben-gm9lo Год назад

Awesome video. So nice to see the actual thought process as well as the actual work, rather than a snapshot before and 'magic' the one after! Thanks for that.

@paul_smith66 Год назад

The BEST type of video. Thanks John, that was very cool.

@chrisholt2474 Год назад

Great film John, fantastic fault finding and explanation. I appreciated the diagram on the cardboard, it then made sense. Much appreciated, well done. 🍻👍👍👍

@djoneselec5100 Год назад

Soon as I saw that ceiling I flashbacked to that video. One of my first Artisan videos. Feel old now, bye 🐿😂

@stevewoods3263 Год назад

Very methodical and well explained John. Keep up the great content.

@charlietymon5082 Год назад

Good old rule of 6 for diagnosing. Or the half/half/half. Great videos

@caterthun4853 Год назад

Needs a pest officer. Could be rats coming up the wall cavity.

@markmann6964 Год назад

I am no sparks, so seeing this diagnosis in action is sheer awesomeness! We had squirrels first (hole in roof fixed) then rats (via dodgy drain) and that certainly needed fixing first, otherwise this becomes a constant problem on the house. When lights are recessed into the roof like that, would you normally expect just twin and earth or would you protect the cabling with conduit or armouring? (on the first install)

@tommahoney7940 Год назад

Great piece of fault finding mate,quality Vlog.

@SamButlerUK Год назад

Very frustrating. I installed IP CCTV on a rural property and hadn’t even finished the job before suspected squirrels chewed through at a drip loop near the eaves. Data cable is much more susceptible to faults but less dangerous.

@Chris_In_Texas Год назад

Take an electric fence transformer and hook it up to all the wires in the ceilings! That will clear the mice / yard rats (squirrels) the next time they chew into those! Need some armored cable it seems, then electrify the armor! 💥🐿🐭 It seems like a good place for some linear up lighting along the ridge hidden by some molding or soffit, that way there is no wiring in the ceiling. Maybe an exterminator might be in order too? Keep up the good work, is lucky the place hasn't burned down. At least if they are going to keep the ceiling wiring please install AFDD's for those circuits, just what they are made for to help prevent the arcing that would start the fire.

@alanjones3873 Год назад

Great vid, using logic as I did when a telecoms service eng. Is this a situation where ‘arc fault’ would protect from fire?

@n3ilvincent870 Год назад

The best electrician at artisan electrics by a country mile so knowledgeable

@dwaynes5983 6 месяцев назад

That is great troubleshooting. Thank you for info.

@deano1968 Год назад

Absolutely Fantastic Educational Video - clear and concise. Top Rated Sparks. Thank you John

@mikerussell1765 Год назад

Excellent video explains everything clearly mate

@adrianmalaeru9045 7 месяцев назад

Absolutely amaizing , thanks a lot.

@tarzan4771 Год назад

Great content..really well explained..Thank You

@n3ilvincent870 Год назад

Another superb video from John, excellent electrician

@leemarshall178 Год назад

Great at explaining the logic 👏 👌🏼

@martinodriscoll5158 Год назад

Explained so well

@shiamjad Год назад

excellent stuff ... pleasantly informative

@ianmiller3182 Год назад

Great content. A false floor for ladder storage I think is very helpful.

@luispereira3 Год назад

Very comprehensive fault finding but I wonder if it was the most efficient way to deal with this property from the beginning. As there are signs of chewing and it is a hostile rodent environment, considering the spotlights are relatively close between each other, perhaps was going to be a more definite solution to rewire with a better cable / conduit.

@ia4387 Год назад

Amazing video here John.

@timothyroper1897 Год назад

exelent logical fault finding vidio great work

@tahseenashfaq Год назад

Brilliant video

@dans5101 Год назад

Great vid guys, your a top guy John

@brianbrooking496 5 месяцев назад

I’d say it was Rats by looking at the droppings. Had them on my property some time ago

@merlin5476 9 месяцев назад

Ive had mice wriggle their way into a back of a tsso, it actually got through the 20mm grommet with 2, 2.5t&e cables as well !! I'm staggered at how it squeezed in there, it was a bit if a mess but i found the issue.

@LoftechUK 3 месяца назад

Great fault finding

@johnspallen3132 Год назад

Brilliant 👏 explanation john

@johnspallen3132 Год назад

Explain everything step by step 👌

@spookyboo3164 Год назад

you tend to get them in country town areas squirrels i had in a loft council can be somewhat dumb since i told them they have fix the hole in the loft and just do a temp fix until the main problems of fauna getting into the loft and chewing the rest of the cables, ut was quite common were i worked not all the time but

@alanmarriott9216 Год назад

Hi. Do you IR test at 230v when lights and loads are still connected or do you combine LN to earth? Thanks

@darrenkellett Год назад

I’m an auto electrician and I see rodent problems a lot, sometimes writing off a car. I’m pretty sure you knew that there was going to be a lot of the wires chewed from the start but at one point I was thinking “why does he think just because that wire is only 2 years old it won’t be that wire” obviously rodents don’t care how old a piece of wire is. I understand this was basically a tutorial on how to trace faults. I remember watching the video from Jordan on this house and I thought then, he should be recommending the ceiling be brought down and lights rewired with conduit or some other protection for the wiring. I’m sure there would have been other wires chewed when Jordan was there but you can only advise, it’s up to the customer how far they go. In my experience as long as you get the fault cleared a customer will not want to go further until it goes again. I have a 2021 VW non runner with rodent damage to get fixed next week and it’s not the first time this customer has had rodent trouble with their cars, last one the insurance wrote off. I told the customer to always put their car in the garage and rodent proof it. Customers don’t always listen. Nice video. 👍👍

@TevjaWeston Год назад

We use Lodi 'anti rodent spray' gives 6 months protection on cables. Bromley Pest Control

@jeremykemp3782 7 месяцев назад

So rodents will chew through wires in a motor vehicle sat on a drive in the country side? Does the vehicle have to be sat there for a while, or can it happen overnight ?

@jasonwatson9011 Год назад

A colleague went to a house last week with squirrel damage after a report the RCD kept tripping. Stripped cables and structural timbers virtually chewed through in places. The house was due to be occupied (Not any more). Currently waiting for the thermal insulation to be removed to allow a visual inspecting of the structural damage as well as the wiring prior to any repairs. That brings the total to three this year (First two were rats though). With rodent damage and an accessible loft we visually inspect as well as test because you cant rely on just the insulation resistance test to prove the circuit is safe again. They like plastic water pipes with their knobbly fittings as well with the predictable but visible leakage. Personally I don't think "Copex" would stop the damage but may minimise it (We've discussed using it but not actually tried it yet).

@artisanelectrics Год назад

Wow what a nightmare!

@tobysherring1369 Год назад

Steel conduit or flexi, or armoured might be the only way.

@nua1234 Год назад

@@tobysherring1369 And an electric fence energiser connected to the conduit/armour.

@spookyboo3164 Год назад

it can be quite a laborious job if i remember correctly tenants think you got a trycorder scanner you wave over it to find the fault but as he shows you its much more complicated

@Skelton1996 Год назад

Do you not have to test between LN - E when loads are connected? Or is it okay to test from L -E or N-E

@howardkey1639 Год назад

That looks to me like the cables have fallen victim to the dreaded Glis Glis, an invasive form of dormouse that is tricky to get rid that is becoming a problem in the south of the country.

@MartinThoward Год назад

Great video very well explained, couldn’t believe the state of the cable at the end, that’s one hungry rodent lol

@barrieshepherd7694 Год назад

Surprised the householder did not hear the little devils scurrying around as they feasted on their electric dinner. I did when a darling got in my loft - fortunately I got rid very quickly and only found some nibbles on the outer insulation nothing had gone through to copper and IR was good. Now I'm paranoid about any noise from my ceilings (bungalow). That dropping on the ladder looked like rats to me too big for mouse methinks.

@alanweir37 Год назад

Well done Sherlock, I’m not a sparks, just interested bystander. Well deduced

@nodwaa9227 Год назад

very interesting

@skfalpink123 Год назад

Time to give those squirrels some tough love. A 12 bore springs to mind.

@richardhutt9672 Год назад

Standard fault finding, it's called binary search. Good job as always

@andrewrowbotham2347 Год назад

Hello Team, Interesting as ever, a test method know as 'The half split method'.

@Jay369 Год назад

04:30 Pro move 👌 Very respectful

@shiamjad Год назад

John is the Man

@g.williamswilliams8442 6 месяцев назад

Excellent video.. I wish I could afford to employ John. Shit hot fault finding 😊

@madeinjapan3485 5 месяцев назад

When wiring up a downstairs light both upstairs and downstairs breakers blew (nylex mcb push in type 6amp). Replaced both breakers but now only upstairs lights are working, downstairs no lights work, what can I check or test to restore power. Both breakers are working as I've swapped them around to check, could I have shorted something out?

@chrisardern4594 Год назад

Run galv conduit on the surface tell the customer its all the rage for lofts rooms.other wise you will be back. Very well demonstrated but it does bring into the fray EICR testing as you say it would be a satisfactory and when you sign the cert i hope you put on a disclaimer.

@ElectricYeti Год назад

In UK do you have armored twin and earth ? In NA we have AC90 cable in various sizes, conductors are covered with a metal flex exterior

@SamButlerUK Год назад

I think SY is the closest, but it’s a steel braid under a clear sheath. You can get flexible metal conduit a bit like the aluminium armour on AC90 but it’s expensive. Steel wire armoured cable (SWA) is what we typically use outdoors or where mechanical protection is needed, but it would be unusual to see that in a domestic ceiling void

@bchdsailor 4 месяца назад

Running cables in conduits would solve a lot of your challenges, do as Cory recommend /as we do in Norway) 😏

@waynebond1939 Год назад

I see there was no tie wrap on making free box... great vid. Has anyone caught the squirrel..

@moccaloto Год назад

Finding the fault via a binary search algorithm. Nice!

@TevjaWeston Год назад

Thats MOUSE damage not squirrels. Bromley Pest Control

@eleanorjones7131 Год назад

Rat I believe the droppings are large

@peewee3ie Год назад

I was thinking I recognised the bedroom and I was thinking it was another maybe it was CJR or Nick Bundy that had it. Got a surprise when you replayed a bit of the video to see it was Jordan that worked on it. Looks like what ever rodent lives in that building is going to keep you busy

@arjanvanraaij8440 Год назад

As a electrician I hate 12 volt halogen spotlights there the lamps are always out or the fitting are making dodgy connection and the transformers can't hold 2.5mm2 wire. In the Dutch code was is a rule that wireing at all times could be replaced without structual demaging the building. So domestic all wires is in pvc piping by size 16 and 19mm. max 4 90 degree bends and bend diameter minimum 4 times diameter.

@JamesScholesUK Год назад

Exposed wiring is on trend at the moment - just clip a bit of T&E along outside the plasterboard and call it good

@alexp296 Год назад

any follow-up ??? to see how all the cables wore ?

@redsnappa7837 Год назад

Had this happen in a flat I lived in that was on the top floor of a Victorian house, squirrels came in off a tall tree into the eaves under the slates and chewed through the ring main twin and earth. Made a hell of a mess

@brickers911 Год назад

Flexible armoured?

@nua1234 Год назад

Need to use metal conduit or armoured cable, connected to an electric fence energiser.

@JohnDundee-el2ro 5 месяцев назад

When you are doing an IR on the new cable Jordan put in and it is showing 20 m ohms clear do you think Jordan stripped it when he was pulling it in between the lights if it showed 20 it would have worked when he done the job what was the IR when Jordan done the IR of his new cable

@Christopher_S Год назад

I think Artisan Electrics are doing a great job making electricians great again. Every job is MEGA. At least now, members of the public know what can and should be done when employing an electrician to do work for them.

@adamfrisby931 Год назад

Lee in the back at the end 😂

@marcelpieterse1 3 месяца назад

You can use flex pvc pipe and put your cable in……..😀

@wolfkayak9 Год назад

Was that Lee hiding in the background at the end?

@dublinsnob3989 18 дней назад

I don't think it's squirrels more and likely probably Rat's feasting on a the light cable meal.

@eliotpalfreman1232 Год назад

Out of interest is there a reason not to use swa or some kind of armoured cable inside a house with pests?

@samjburns07 Год назад

There's nothing wrong with it but it's just a faff. I guess h07 would work well tho

@eliotpalfreman1232 Год назад

Thanks for the reply 👍

@n3ilvincent870 Год назад

Did he turn off the rcd at fulll load

@ThePostalbiker Год назад

you should get a wallabot to find where the wires are being run

@kennylavay8492 2 месяца назад

Rodent damage should be covered under home owners insurance.

@benjaminvivar7855 Год назад

a trace toner to follow cable route Could save time no continuity testing needed .

@johnpro2847 9 месяцев назад

we have possums here in Australia

@yasswak Год назад

How would you price a job like this with the customer? im guessing an hourly rate

@n3ilvincent870 Год назад

Stupid question I know but why isnt the consumer unit not in the house

@user-od8ki6tt1j Год назад

John has gone MEGA... dude lol

@cunning-stunt 10 месяцев назад

Rats pee as they walk, that is what causes the moisture. Once worked in an old factory and they used to run around the tops of the walls, you could see the piss that had run down the walls over the many decades. It stunk of it up there too.