Electrician: "This is a weird fault" | Electrical Fault Finding
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- Опубликовано: 11 дек 2023
- In this video I'm investigating a weird electrical fault in a loft extension. Enjoy!
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Customer: so is it unsafe?
Delroy: no no no, um, yeah
end of video
Nice hole with no gromit in the bottom of the board with the tails coming through 🤔
Forget grommet lol ...needs a tails gland really for support and also no Discrimination (or selectivity) i think on the rcd`s but i didnt look close
I was about to make the same comment. I would prefer the main earth to go through the same hole as the tails in a tail gland
You should change that second RCD in that small board in the loft conversion for a main switch , you don't have two 30 ma RCD one upstream to the other , plus you should change that wylex MCB for a mk one , at you should have notified the customer that work needs to be carried out ,
Great detective work Delroy....
Exactly what I thought. I've started looking at jobs from the perspective of what wouldn't I do first ....most of the times I find the issue quickly.
11:18 what a ridiculous place to position a sub board
Good start with Bottom entry Man Tails with no gromet and I'm not even a Spark to notice that..
probs why you said grommet and not tails gland ?
You know what I mean, cables should be in a 'gromet / gland etc.' I just mentioned the mistake which should be enough said... and I am not a Spark...
No you know tails glands are a thing. You're welcome....@@davidpenn2518
That’s it then- you’ve sorted it! Not bad for a non-spark
Well done del
2 RCD will fight each other
Ditch the RCD in sub-board in loft 👍
or move the 50A breaker off the RCD in the second board
Front end RCD no main switch so not possible, also the feed from main consumer unit to sub-board was in T+E and the installation method would require supplementary protection so would therefore need to be clipped surface or otherwise suitably protected from damage I.e. armoured cable or trunking. So only viable option is remove RCD and sub-board therefore achieving “discrimination” and eliminating possibility of 2 RCDs tripping👍👍
Sorry edit that 🤦♂️ the consumer unit is spilt load not front end as I first thought (look better 😅)
no gland on the tails too
Nice job 🎉🎉🎉🎉🎉
2:44 no gromet on the incomer tails!!!
Two RCDs in the circuit is just asking for issues - suggestive of a DIY bodge job or an incompetent spark. That needs to be corrected and the loft circuit(s) fully tested as there may well be an underlying fault - I don't think that would be wasting the customer's time and money. I'd also question the positioning of the loft circuit board. It is too concealed like that and needs to be more accessible.
builders special, thats a BG garage board hanging off a different model breaker than the board its sitting in
No gland either on those main tails mate oops
I would reconfigure the board downstairs so that the loft feed is non rcd protected. Two rcd's on that loft feed is asking for trouble
but that would require that the 6mm cable feeding it be protected mechanically which probably isn't possible now that it is installed. Easier just to remove the RCD in the sub-board since it isn't adding anything and since it has same rating as the one on the main board it can be a bit random as to which one will trip out first.
this needs consolidation into one board
Is there a borrowed neutral on the stairs lighting to the loft? Lights in original part look to be on the right RCD, loft on the left.
Could be a timer or strapper wire circuit and poor run borrowed neutral running back through the wrong RCD when a two way switch is operated
Didn't you hear that macerator motor cycling when he turned on the RCD? That starting and stopping will generate tripping spikes that will have undoubtedly caused the problem. A crossed wired neutral will trip every time a load exceeding the rated ma of the RCD is applied, so definitely not that.
If you fancy swapping testers you can have my 1741+ and I’ll take your X1! 😂
the pump may be faulty from short cycling.
First fuse board needs tail gland plus same type tested type A RCD & mcbs . The whole Job screams of dangerous diyer or builder.
Screwfix special BG consumer unit. That macerator would be the likely candidate for nuisance tripping.
Ooo dibs on the macerator causing an issue. Random trip from a thinking of needing a good ol' mash up to 'oh, no, wait, no one's done doo doo, my bad,' RCD be like - kids be playing switch the power off.
That's my only street talk way of saying without getting technical. Lol!
Recommend more dietary fibre for the lady and get out of there.@@T_Perkins
poor install, is that a 30ma main switch too? no discrimination?
the pump going on and off all the time could have did it maybe it got hot
Why don’t you like the MFT x1 was looking at getting one. Curios to know why you don’t like it
if you could pull 2 wires down to the main consumer unit then all the rcds could be down there.
I kneoow…nope nope nope 😂
Well traced dell😊😊
Bet something got stuck in the sanilflow and stopped the pump from spinning .
For work permit electrical work
I dislike my X1 as well. I’m going to return mine.
Hi Michael, what do you not like about the X1- I’m on the lookout for a new MFT. I have the Megger 1730
@@abdulseaforth6930 it’s missing a lot of the functions the the 1741, like stake-less earth testing, the (pure) auto test for Ze/s and RCD.
It keeps showing neutral errors when doing the fake auto test, even when the leads are pre connected and the load is then switched on.
When choosing different RCD testing modes it keeps changing the testing mA which is frustrating when the tester is a long way from the board and you don’t realise until halfway through / after the test.
The battery is pants and will / can die without warning.
When conducting 3-phase testing the switching of the leads around to different ports is a nightmare and can catch you out if you get complacent.
The link to the CertSuite software it’s just gimmicky and as the tester can be nightmare for testing, it can take twice as long to get the relevant results sent across to the software, also if you haven’t got the tester, or the software set up correctly, the results just disappear.
I found the 1741 was its own tester with its own user-friendly quirks however the X1 is very similar to a Kewtech in the way it operates.
Megger might have done a software update but their website is still showing the original firmware and no updates.
Currently, my X1 is sitting in a bag doing nothing and I’ve gone back to my 1741
wait till it happens again..... you know she made the kitchen light switching up.
Ashley get a life!!
A tad harsh- probably was confused
Outgoing circuit not connected correctly into the mcb. My guess before watching.
Bad guess
Was worth a try@@BULLEAD
What a crock of shit that installation is. Unsupported meter tails, no entry gland to a steel board, no labelling, incorrect MCB's, blah de blah de blah. AND they have the cheek to put an NICEIC label on it!!!!!
Builder installed it, or a wannabe. They’ve probably got a load of NICEIC stickers amongst their trowels.
Hey Delroy i sometimes hear your breathing louder than the voice of the client. You’ve been to the doktors with that ? Just worried thats all .
I noticed too. Hope you ok delroy.
He's confused
Lineman from in 10 years experience HT 11kv 33kv LT line transformer housewiring from India
Too much power consumption Too many devices at the same time
or just a dodge device, hence it was the RCD not an overload......
Don't think so as she said it tripped whilst she was out, so hardly any load on the circuits most likely. Sounded like a pump firing up when he turned the loft RCD on. That would be my first port of call, and obviously informing them that an RCD downstream of an RCD is asking for issues. Then the wylex breaker needs sorting in the MK Board, just my 2p!
Spot on. Tuppence well spent. @@grannywaffle
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