RCD FAULT FINDING! | HOW DID I DO THAT!? 🔎

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DETECTIVE FINNEY IS ON THE CASE! This week we're RCD fault finding at a domestic property. There were so many elements to check! Watch the full vid to see me demonstrate my elite electrical detective skills.
Edited by Josh Banks -- joshuabanks338@gmail.com
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WARNING: This video is for entertainment only. Only qualified electricians should be carrying out any of the showcased work. You assume complete responsibility for the results.
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29 сен 2024

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Комментарии : 78

@tavislucaso 6 месяцев назад

Good findings but take away the annoying music and speak slower 😂

@finneyelectrical 6 месяцев назад

Ahh about the chill vibes 😂 do I need elocution lessons?

@no_short_circuit Год назад

Thanks for the video. Anything on fault finding is good for me.

@finneyelectrical Год назад

No worries! I’ll film some other fault finding vids. Always find it within the hour!

@nt08aaw 7 месяцев назад

Hey dude Resistors in parallel explains the low “cumulative” IR 1/RT=1/R1+1/R2…. Nicely done

@finneyelectrical 7 месяцев назад

Like it lad 👌 slightly different to fault finding using a clamp meter. Never get when people say the last electrician couldn’t find it as it wasn’t tripping at the time they came 😂

@shiamjad 2 месяца назад

remove the annoying music please, otherwise great video

@finneyelectrical 2 месяца назад

Cheers dude

@tzm1843 Месяц назад

Why would two RCDs in series trip together, after around 24 hours powered? But when there was only one RCD it did not trip! I didn't find a large current imbalance nor any ground currents. Any tips?

@finneyelectrical Месяц назад

@@tzm1843 so basics is rcds trip at the rating, so they trip when something causes more than 30mA leakage or trip if they are faulty. If they test out ok then it must be something intermittent in this case. If you do an insulation resistance test with the rcds off from line to earth and neutral to earth then if there’s an issue you generally get a reading less than 1Mohm. Disconnect the neutral and turn off the mcbs to find which circuit, then dive into that circuit to find the fault, is generally how it goes

@jbl2270 4 месяца назад

Sir i appreciate your video but could you please articulate a little more? Sorry no disresprct

@finneyelectrical 4 месяца назад

I am so sorry my friend, this is the Yorkshire way 🫡

@Dog-whisperer7494 15 дней назад

Why not do an earth leakage test first. To see what appliance is leaking the most current. ?

@finneyelectrical 15 дней назад

It might not be an appliance, this check is usually 5 min and identifies where to look. Could have easily been the boiler, outside lights etc

@Dog-whisperer7494 15 дней назад

⁠@@finneyelectricalyes but an earth leakage test would give you an idea of what appliance is leaking the most current which would be pushing the total amount over maximum 9ma aloud

@three-phase562 Год назад

Nice logical fault finding sequence. Good to see you testing all the circuits out and going into the appliance for a deeper investigation of the fault.

@finneyelectrical Год назад

Yeah might aswell, was there like 40min so way under the hour slot I allow! Most would just turn it on and leave 😂

@azizahmedmuhammad4124 3 дня назад

Do you mean parallel resistance between three elements?

@pavlokllogjri796 Год назад

Very interesting video and I subscribed, the background music though spoils it. Please consider omitting it in the future.

@finneyelectrical Год назад

Yo man cheers!

@YoungBobby98 3 месяца назад

As someone that’s studying for the BS 7671 exams along with other exams, i find this helpful af👌🏻along with the funny edits here and there makes the video’s class😂keep up the good work mate! Helping me out a shit ton!

@merlin5476 Год назад

Ive had a couple of times a suspect rcd that wouldn't trip even with the test button. It turned out to be a neutral to earth fault on the 6mm feeding the hob. Unusual because as we all know, that that kind of fault WOULD trip the rcd !!!

@finneyelectrical Год назад

Great name 😂

@finneyelectrical Год назад

Yes mate, I’ve been black to a few where previous electrician changed over the RCD but it didn’t resolve the issue. You need to disconnect the neutral and line of the outgoing and then do an RCD test. Defiantly had that before with the test button not working with a neutral to earth fault. Was a socket screw, screwed into the neutral.

@finneyelectrical Год назад

What happened to rin tin tin the turd? Haha 😂

@merlin5476 Год назад

@@finneyelectrical You tube changes it as far as I'm aware to 2 differnt old accounts!! Not sure why !!

@merlin5476 Год назад

@@finneyelectrical i can only assume that the earth was at the same potential as the neutral!! I.e. a very poor earth. !!

@MS-Patriot2 6 месяцев назад

How would 0.8M Ohm I.R. trip an RCD ? 230/800,000 = 0.0003mA. Watching to end, you advise that expansion during oven heating may lower the IR, plus good point about parallel paths 1/R1 + 1/Rn = 1/ Rtotal.

@finneyelectrical 6 месяцев назад

Basically that, there may not be an isdue currently but that less than one Meg points towards that as being the issue

@WillmannElectrical Год назад

Perfect example of the process of RCD fault finding fluke MFT bro 🤘

@finneyelectrical Год назад

Yes my guy! Haha great testers 😀 don’t think there’s any other ways, please let me know if you know!

@stanbest3743 4 месяца назад

We had a new oven that kept tripping the RCD. I found about 7 out of 9 elements had poor insulation I rang the importer direct. To my surprise they were very relaxed about it and sent me complete set. I fitted them and it gave about 15 years service

@AngelaPeters-fy1tc 2 месяца назад

That was absolutely brill. very educational,really good to see the sequence involved in fault finding. IM only a novice in my electrical journey but i found you to be a blend of extremely likeable, with a dash of humour and super explanations. what you did also that no other youtubers do is give a good summary at the end. I found this to be the extra mile that others dont do. sometimes I might not pick up what your saying during the actual job so a recap I was very impressed with.keep up the excellent work. These videos are such a valuable resource. Well done.

@finneyelectrical 2 месяца назад

Thank you so much for this nice comment! Most comments are RU-vid experts putting in their bit of how it’s wrong and how they would do this haha 😂 I’m glad I could help you out!

@jamesdodger5588 9 месяцев назад

Most useful, thanks. I have EXACTLY the same problem (cooker tripping the RCD when in use). I am going to get the cooker checked by an approved appliance engineer. You have done a (middleman) electrician out of a job somewhere...😃

@finneyelectrical 9 месяцев назад

Haha 😂 well I always give free advice over the phone for fault finding if it’s user end fault finding. Always do my self out of work or a £160+vat emergency call out. Always good to help. ❤️

@michaellack5139 6 месяцев назад

The resistance changes on the element when heated

@finneyelectrical 6 месяцев назад

So true so if your getting bad readings cold it’s going to get worse!!

@samuel9105 Год назад

Hey mate in this situation, before taking the oven apart, would it be worthwhile testing earth leakage on each circuit protected by the rcd? Possibly other circuits could have too many milli amps of earth leakage combined from appliances to cause intermittent tripping? great vid!

@finneyelectrical Год назад

Heya Samuel! Cheers for the watch, what videos would you like to see? So we tested everything and it was all clear but the oven. We knew the oven was the problem but then gave the customer a bit more bang for bucking pulling the oven apart.

@alvina69 7 месяцев назад

Within the first minute, my money was on either the cooker or boiler.

@finneyelectrical 6 месяцев назад

Yeah or outside light 💡

@enochabban8086 Год назад

Hi ,man am Enoch from Ghana I really watch your videos. Am Electrician too

@finneyelectrical Год назад

Biblical name, like it. Thank you for commenting and liking the vids. Really helps grow the channel. What videos would you like to see Enoch?

@sergiofernandez3725 Год назад

Nice diagnostic, very logical

@finneyelectrical Год назад

Cheers matey!

@fattoamanowoodwork3638 11 месяцев назад

Great video, thank you. Really helpful is also the summary at the end. Neat

@finneyelectrical 11 месяцев назад

Yeah fault finding is definitely out he box thinking at first! You do much of it?

@adamali2886 3 месяца назад

what a headache

@finneyelectrical 3 месяца назад

You will get it if you keep at it!

@adamali2886 3 месяца назад

@@finneyelectrical you have to do all of that just to get the power working again. The best solution would be to throw the whole rcd in the bin. Humans have gone backwards big time. Whose going to keep calling the electrician again and a again everytime this thing trips. What a disaster these switchboards are. The old switchboards were way better. These new switchboards are making electricians millions

@finneyelectrical 3 месяца назад

@@adamali2886 nah your wrong, rcd’s stop people getting electrocuted, the death rate for electric shock has reduced massively since they came out. There’s some funny old folk which still have the mind set of if it works it will be reet, meanwhile their kids stick their fingers in the sockets and are no more. Times change my dude, get with it 😉

@adamali2886 3 месяца назад

@@finneyelectrical if you can't look after your kids you shouldn't have kids

@mathewvaghesevarghese9936 Год назад

👍❤👌

@finneyelectrical Год назад

Heya man! Cheers for liking and commenting, can’t wait to see the channel grow! Loads coming, watch this space. What stuff do you want to see on the channel?

@Jim804 6 месяцев назад

How do you take the neutral out. Do you mean the main neutral lead to the isolator or each circuit individually

@finneyelectrical 6 месяцев назад

RCD off disconnects the neutral, main switch disconnects the neutral and taking each circuits neutral removes that link between neutral to earth, meaning disconnects the TN of a tncs or tns or a link between neaitral to earth in a TT

@Jim804 6 месяцев назад

It’s at the 3 minute mark I don’t get as I don’t think I see you actually take the neutral out for each one. So I’m not sure what was going on mate.

@finneyelectrical 6 месяцев назад

@Jim804 yeah took the neutral for testing that circuit so when you test you should get >200Mohm or at least over 1Mohm. Anything under that shows there’s an issue in that circuit. Then do line to cpc and check that. Obviously just turning off the mcb disconnects any links to other circuits.

@rowles13 6 месяцев назад

Great video pal🎉 Forgot to ramp test RCD..

@finneyelectrical 5 месяцев назад

Cheers lad, can’t film it all 😂 trying to keep track of the job, the RU-vid time line and a Tik tok timeline is hard to manage 😂

@brianhewitt8618 Год назад

👌

@finneyelectrical Год назад

Would you do anything different?

@VTACTechnical 10 месяцев назад

Poxy ovens...👺👺. The usual suspect..good Vid bud. 💥💥

@finneyelectrical 10 месяцев назад

Yes! That and outside lights! You a sparky yourself?

@VTACTechnical 10 месяцев назад

Guilty as charged...#Electrical/Telecom Engineer

@finneyelectrical 9 месяцев назад

Ha like it, hope your not one that strings his telecom on an angle across a grid ceiling in 2 min flat 😂

@ryanmilne1987 6 месяцев назад

Good video! Interesting watch

@finneyelectrical 5 месяцев назад

Cheers lad

@aidanmulvaney9789 8 месяцев назад

Dont thik you know what you at man

@finneyelectrical 8 месяцев назад

Speak English???

@ashfaqjuna 6 месяцев назад

Great video. Thanks 😊

@finneyelectrical 6 месяцев назад

Cheers ash! Love to help people ❤️

@ashfaqjuna 6 месяцев назад

I also have an intermittent fault that trips the RCD..I suspect it's the shower ( doesn't heat the water, just mixes). I will wait to get a basic insulation tester, I only have ordinary DMM.. Would that also give me an indication? Thinking ahead, would a consumer unit with RCBOs be better? Btw what area do you cover in the UK? I am in Reading area.

@finneyelectrical 6 месяцев назад

Yeah that a good 3 hours for us, could charge you a good £500 to cover but best to get a local firm in for like £150-200. Basically do what I did in the video, if it’s the shower, get the same make and mode and replace it. Check the out of the isolator with it off to check it’s the shower not the cabling