The spooky Xmas video where we don't find the fault

[@purpleheadedwombbroo]

Have you tried changing out the mcb?

[@dsesuk]

Yes, the original config was RCBOs in DB_Cellar, but as part of a wider upgrade we moved the RCBO upfront to DB1 nearly a year ago. Two re-homed MCBs from DB1 then went into DB_Cellar for lights and sockets. Whether RCBO or MCB, the sockets would always trip off in the cellar DB given time, although we could never catch it in the act. That's one reason why the RCBO protection got moved - to see if the fault would fall back to DB1 or remain on-circuit.

[@carlrobson5745]

I did think for a second that might have been your dungeon.

[@davewood4604]

Gosh another video with dynamic Dave and Lovely Linda. And, Linda has got shackled, congrats Linda. And you didn't find the fault so there should be another part too. Gosh what excitement for 2025. I can't contain myself

[@dsesuk]

There was nothing dynamic or lovely here I assure you.

[@electrician247]

Happy new year to you and Linda. Top video

[@dsesuk]

All the best to you and yours for 2025 Marky. I hope you had a good boozing season?

[@dsesuk]

Don't over-sharpen your tip!

[@snzero]

Another David Savery video? That's 3 in the space of a month. Keep this up and you might be able to monetise this KZbin malarkey. Looking forward to a content filled 2025 from you sir

[@dsesuk]

Just blowing off a backlog. There'll probably be nothing until the summer now.

[@anthonybragg]

Happy new year & pass on my congratulations to Linda. My conclusion on that fault assuming both RCBO and MCB are ok is either part of the circuit is wired in twin and earth and something has penetrated across the cable catching the live and neutral and the dampness is tracking between or when it rains water is tracking in maybe if a D.P. switched socket tracking between switch contacts. Your face was priceless for a split second down there.

[@dsesuk]

It's something like that, and intermittent enough to be too troublesome when in an area that new wiring can be pulled into without worrying about final finishes.

[@mattJsy1]

Saturday sofa time and Savery video! Fantastic timing 👍🏽

[@dsesuk]

I could see you were looking bored, so I quickly wanged this one out there...

[@mattJsy1]

@@dsesukHow did Bundy lure you into his basement? 🤔

[@dsesuk]

@@mattJsy1 He said there would be puppies.... and Carlsberg

[@davefrizelle3882]

Happy New Year to both you and Linda, and congrats to Linda on the marriage. For the fault, a few thoughts - it looks like the majority of the sockets are not even needed now given what the basement is being used for, so you could try disconnecting a lot of them and seeing if that helps. The other thing, not very important really, you seemed to only consider a magnetic trip of the MCB thinking of 48 A going through it. But even 20 A through it for a prolonged period could trip it, you just don't know unless maybe you put a current clamp on the circuit with max hold to see if you could catch something, but even then the clamps average over a period of time so they won't always show a spike in current that causes the magnetic trip. Like you said though, probably best to just start over, or maybe just disconnect the majority of the sockets and see if that fixes it, if the client can accept that solution.

[@dsesuk]

I agree that monitoring it in some way is the best way to show an overvoltage, but without evidence of where it is, and with a not-too-logical layout of conduit and wiring, it seems best to start again for the most part than throw any more time at it. I don't think any of the existing outlets are in use for any purpose at present so it's not a high priority to re-do or to get to the bottom of.

[@TheChipmunk2008]

yes indeed congrats to Linda :)

[@adriandale3213]

Just a thought … perhaps dodgy 16A type B breaker? Had this recently on new 20A BG RCBO radials on new circuit. Plugged in 2kw vacuum cleaner - in rush current = trip. Tried 2kW heater = no trip. Plugged in chop saw = trip. IR off scale so can’t be that. Assumed earth leakage on vacuum cleaner but nothing when measured. Swapped to C type breakers no issues since.

[@dsesuk]

The MCB has been changed. I should have made that clear in the vid. It was originally an RCBO which got relocated upstream months ago, but the fault remains at the cellar.

[@PatriciaSawyer-ot4us]

Take it that was an old basement you were in. Suspect IR fault on old cables in steel conduit. Sharp edges on JB's, moisture, damp, mouse piss, rodents chewing through etc. Would be interested to know!

[@AGRElectrics]

Had one of these in student accommodation 6 months to find out it was one of students parents shitty rice cooker, got a call at 6 pm and flew on site to find them in the act! was fuming!

[@sergiofernandez3725]

Not sure about that basement Swingers Club. Was it a recommendation from Nige? Lol

[@dsesuk]

I threw my Transit keys into the bowl but there were no takers.

[@jamescarver6275]

@@dsesuk That's because there are now plenty of trannies out there to choose from.. :)

[@M0LHA]

The spark who works on my house told me about a customer he visited who had door like, behind it was a (supposed legitimate) room full of Katanas! Wonder why they have that in a residential property?

[@TheChipmunk2008]

What model volt stick is the lovely lady using, my TIS one is pants, never buy them, it's intermittent, second one i've had like that.... absolutely unreliable Hope you and all your victims...i mean friends, family and colleagues had a good christmas and happy new year..... Those luceco head torches are brilliant

[@dsesuk]

Linda's using a Kewstick Duo. They're alright, but too easily knocked on in my experience. They should have recessed the power button or something. Happy New Year!

[@TheChipmunk2008]

@@dsesuk Cheers dave, i use holster pockes so shouldn't be an issue, price doesn;t look too awful. It seemed quite sensitive, i like that feature....

[@TestGearJunkie.]

I've got the Fluke ones, they're pretty good. Don't get on with head torches, they hurt my brain after a while.

[@MS-Patriot2]

@@TheChipmunk2008I’ve had one for years, also has a reduced sensitivity button to help pinpoint a live in a rats nest. Battery change is a fiddle but otherwise happy with it. Fluke predecessor was binned in a week, awful.

[@TheChipmunk2008]

@@TestGearJunkie. I tend to sweat a lot with head torches but handy for short term jobs

[@ManxAndy]

Ahh….the dynamic duo, darkening our screens on a proper winters night, the sleet has just started hitting the windows, , ps that must have been a hell of a long fault finding….Halloween till Xmas, was it all at standard rate…? 👍😜🇮🇲😂

[@dsesuk]

We got the snow here too Andy - hopefully not for long, the van doesn't like it!

[@remog38]

Interesting is that the most unusual place you have worked ? Congrats Linda

[@dsesuk]

That's gotta be one of the oddest spots we've found ourselves in.

[@remog38]

@@dsesuk from you i guess thats not an understatement 😁

[@Dog-whisperer7494]

Chances are the cables are starting to deteriorate from the damp. Or moisture in those dam JBs again from the damp . But I have to say with all that freak shit you wouldn’t get me down there. Even though it not real . Interesting video though David what was the final outcome? Did you find the fault or just renew part of or all of it .? Happy new year mate and congratulations to Linda and happy new year to hear as well.

[@dsesuk]

No Sean, we bugged out and moved on. No point throwing more time at it. It's not even a logical conduit run as the sockets and lights are all lumped in together, so it's not easy to break down and trace what's going where. Better to start anew for much of it.

[@Dog-whisperer7494]

Yeah I have to agree. I hate jobs like that. Moore trouble than it worth . In my opinion.

[@Mark.R_]

If you have a thermal camera handy it may help locate the issue, now that it is cold.

[@dead.format]

Only time id expect to see riff-raff lile you in offchurch would be in the bar at the stag 😂

[@dsesuk]

Haven't been there for a few years, but wasn't a bad joint as I recall.

[@DTELEC]

Happy new year Dave ⚡️⚡️⚡️

[@dsesuk]

All the best for '25 sport!

[@ericthekingthekingtheking4842]

Dave you should share your immense knowledge more often you are very clued up, when you stay off the special brew long enough

[@dsesuk]

I'm only half clued up, and even then only in the narrow field of domestic electrickery.

[@andrewcadby]

0.07M ohms, I'd have been tempted to break the circuit down to try to pinpoint the cause of that.

[@dsesuk]

Remember, that reading is L-N, not to earth, so it's not actually a problem in of itself. It has to drop down to a single digit to trouble the MCB.

[@Charlie-hz3tk]

this was still entertaining, despite not finding the fault. I had one of these types a long while back….turned out to one of the sockets at fault….had damp across the connections. Still took a while to find it……nice one Dave

[@andrewcadby]

@@dsesuk I have come across a fault of a similar resistance that was responsible for causing intermittent tripping of the MCB, where no RCD was present. As you note, the maths suggests it shouldn't, but it did, and replacing the faulty section of cable fixed it permanently. It's worth investigating IMO.

[@JACKATTACKED]

Happy New Year 🍺🍻🍺🥃🍾🥂🥳

[@dsesuk]

All the best for the New Year old fuit!

[@ChristmasCrustacean1]

did Nige moonlight as the voice actor for those basement recordings

[@dsesuk]

Kind of. I used a hidden mic and caught audio of him having it off.

[@TestGearJunkie.]

Where the [insert expletive of choice] was that place..?! 🥴😵😵‍💫😮😱

[@dsesuk]

One of my regulars, although I hadn't seen the cellar dressed like that. Sorry for the missed call - was serving dinner! I'll be up for a chat later (drunkenness allowing), or tomorrow if the green tin gets me.

[@TestGearJunkie.]

@@dsesuk No probs, we'll be here.

[@garygriffithsTEMLTD]

You find all the best places !!!!!!

[@dsesuk]

Poke around for long enough and you too can find yourself in a creepy dungeon armed with just an insulation resistance tester and a mad woman.

[@steveng5503]

I’m away to re-thread my pencil.

[@dsesuk]

Don't over-sharpen your tip!

[@jamiej779]

Great Vlog for the start of 2015 Congratulations to Mrs Linda and love the Fook Elon at the end 😎on your platforms

[@steveosshenanigans]

2015 ……🤔

[@Chris-hy6jy]

You had 70k across L and N at 250v so what did you have at 500v? If something was breaking down, a 500v test would have shown it. Then it's just a case of splitting the radial until you find it.

[@dsesuk]

500VDC from a battery powered instrument would indicate little difference and wouldn't lead us to anything obvious. We could break the circuit down, but the point here was that the circuit was shonky and not logically laid out with conduit serving both lighting & sockets while splitting out at improper junctions. It wasn't one you could just follow and map, it had suffered from damp and iffy modifications over the years, and there wasn't even a trip event to see while we were present. That's why we only threw a short time at it before figuring it was best to have the client tell us what they wanted where and to run in new known wiring to suit. We'd perhaps put in more effort where new wiring would disturb final finishes, but down here where it's all surface mounted and pretty cack, it isn't worth spending much time and money trying to figure out what's good.

[@Chris-hy6jy]

@dsesuk not sure why you think a 500vdc test wouldn't have shown anything. If it was intermittently tripping a 16A breaker at 360v peak, 500v should have caused it to flash over and show a very low IR reading. The fault could have been L-E too of course. Doesn't matter if you're just going to replace it all anyway.

[@dsesuk]

@@Chris-hy6jy It can't be a L-E fault as there's an RCBO upfront that isn't tripping, but even if we got a cack result at 500V, it wouldn't give us an indication of where that fault was without breaking things down, and it wasn't worth the time and effort considering the age, improper mods and evidence of prior moisture ingress.

[@Chris-hy6jy]

@dsesuk ah ok, didn't realise that board had an RCD. Fare enough.

[@devonfuse]

You do realise that an MCB will trip on an earth fault as well as an overload, don't you?

[@londontrada]

Possible, but do you not think it would have tripped the RCD at some point? If the RCDs never tripped it's unlikely.

[@devonfuse]

@@londontrada sorry, didn't see any RCD in the CU.

[@londontrada]

@@devonfuse He says at the beginning it's RCD protected at source meaning the submain is RCD protected.

[@devonfuse]

@@londontrada then I must have missed that bit

[@dsesuk]

@@devonfuse Yeah, it's mentioned a couple of times and is in the pinned comment. It's an easy one to nod off in front of though.

[@fairplay-e1w]

thought it was lindas tights

[@dsesuk]

No undergarments were torn in the making of this video.

[@colinblythe3710]

Wasted all that money on scarey bollocks and NOWT on what matters - general public are idiots

[@dsesuk]

To be fair, this is an inherited problem. The iffy wiring dates back to long before the current owners took charge and they're paying me to figure out the good from the bad.

[@AndyK.1]

It’s difficult to know what’s real and what’s SFX

[@dsesuk]

Turns out it was all real and now Linda and I are stuck assisting DS Fascist and her colleague Sargent Koontz with their inquiries...

[@JLGadgetguy26]

Was this a Conservative MP's home by any chance 🤔😉

[@londontrada]

There's a property I go to regularly and the 2 girls there live like witches. The house is like the Adams family with massive cobwebs everywhere (real ones) it's like a movie set. One of the bedrooms just has like 30 pigeons living in it 😂