Surprising Method for AFDD Testing During Consumer Unit Change

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When should you consider replacing an existing consumer unit? The circuit protection requirements to meet wiring regulations have evolved over the past decade. Let's delve into why an upgrade was necessary for this fuse board.
During the upgrade, we tried out the new dual-row consumer unit from Lewden and discovered a foolproof way to test an AFDD.
Learn more about the Lewden dual stack range 👉 hub.efixx.co.uk/lewden-dual-stack
Check out the Lewden connector blocks 👉 hub.efixx.co.uk/lewden-blocks
Free Circuit Protection Myth-Busting training module 👉 training.efixx.co.uk/course/c...
Best Practice for Consumer Unit Replacement 👉 www.efixx.co.uk/Know%20How/co...
Check out the Epson LW-Z710 Label printer 👉 hub.efixx.co.uk/epson-lwz710
See how it works 👉 • Epson LW-Z710: Avoid T...
=================
Time Stamps ⏱
00:00 Today we'll be installing a Lewden Double Stack Consumer Unit
00:32 Five reasons to upgrade a consumer unit
00:47 Reason 1 - Regulation changes
01:20 Reason 2 - Surge protection
01:44 Reason 3 - Leakage Current
02:18 Reason 4 - DC Leakage Current
02:50 Reason 5 - Renewables
04:05 Some great installer features
04:45 We've been trying out a new label printer
05:04 A new range of connector (Henley) blocks
05:25 A hot topic - how do you arrange your protective devices?
07:57 Here's how we arranged them in this situation
08:36 Why we've installed AFDDs on this job
09:16 Gordon has found an AFDD tester
10:28 Solar is coming soon on this property
=================
#electricalinstallation #electricians #electricalindustry

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18 май 2024

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Комментарии : 100

@dsesuk 2 месяца назад

I've put hours and hours into building Arc Chamber Mk III this past weekend... and now you're telling me I just need my mother's old Kenwood Chef and a pop-up counter socket??! Pah!

@efixx 2 месяца назад

Some say there is a carbon rod in every pop up socket 😉

@_Steven_S 2 месяца назад

Just think of the patents Dave 😁

@dsesuk 2 месяца назад

@@efixx There's certainly one in Mk III... whether it works remains to be seen...

@tresslerj1985 2 месяца назад

All hail the drunken one!

@jonathanp4128 2 месяца назад

Does it trip a Haeger Single Mod though, that's the real question. Pro Tools might help them narrow it down, and provide that invaluable insight 😂 @@dsesuk

@andyburns 2 месяца назад

Send it to DSES ...

@Dog-whisperer7494 2 месяца назад

Great video Gordon , the reasons for upgrade of the CU I can agree with , in my opinion CU should never of been allowed to be installed in under stairs cupboards in the first place. But what gets my back up is when some electrician’s lie to their customers by telling them that the existing CU is illegal and dangerous and doesn’t comply with the regulations. Then insist that it has to be replaced. I refer you to the onsite guide page 99 . Just because it’s old doesn’t mean it’s dangerous or needs replacing or upgrading. Great video as always Gordon 👍

@TheMatsushitaMan 2 месяца назад

never have* been, not "never of been"

@JimWhitaker 2 месяца назад

5:34 Like that clock. 🙂

@tombickerton5909 2 месяца назад

It’s a neat job and he’s a good electrician too . Great video and equipment too. Learned something today regarding AFDD

@efixx 2 месяца назад

Thanks for watching!

@retrozmachine1189 2 месяца назад

The old Chef, I have one of them in the cupboard. Quite a beast of a machine with more attachments than can be imagined, and I think it has a brushed motor but no AFDD should trip from the arcing on brushed motors and glad to see this wasn't the case here either.

@efixx 2 месяца назад

A classic of British Engineering lives on forever!

@r.h.8754 2 месяца назад

Most of the sparking comes from the centrifugal speed controller switch - when the motor reaches the desired speed the switch opens thus cutting the power so the motor is actually running at the speed controller switching speed - the switch is continuously opening and closing to keep the motor running at a constant speed.

@ellisgarbutt1925 2 месяца назад

@@efixx Unfortunately not the case these recently scraped a 10 yr old washing machine because he motor failed

@sergiofernandez3725 2 месяца назад

The CU does not have to be Instagram ready but is should be Square, straight and Plumb it should be suitably Selected & Erected

@therealdojj 2 месяца назад

I really wanted to have a pop up socket installed But I'm glad we're didn't But if be really interested to find out what is faulty with it 👍

@TimmyBoja Месяц назад

3:19 - NB. "...the power can flow in the reverse direction." Great to see eFixx getting it right! Too many sparks talk of reverse current. 👍

@andyhodchild8 2 месяца назад

I have just replaced my 12 year old wylex 11 way RCBO board for exactly the same reason and because I needed more ways with going all electric. I used a 25 way Hager board with all what you're fitting and fitted a bidirectional RCBO on my existing solar. I live in a small but very well insulated bungalow with solar PV (SE) and solar thermal (SW). I have an Eddi doing the morning shift and thermal doing the afternoon. I dread to think how many ways you need in very large property going forward.

@efixx 2 месяца назад

can’t see them getting smaller

@T_Perkins 2 месяца назад

No solar, no car charging. Eco 7 1 bed flat. 15 on peak + 2 for surge 4 off peak + 2 for surge 21+8 way fitted Chap who fitted the boards was just giggling because he thought I was over speccing at first... It did dawn eventually being an electric only - so many places have gas heating and require much less circuitry!

@thattoolguy9432 2 месяца назад

A fellow QLOCKTWO owner , neat install

@barryhodgetts5918 Месяц назад

I suppose I am showing my age saying we had one of those mixers. (it got damaged a few years ago while extending the kitchen) Having repaired it in the past the speed control was by two contacts breaking the supply to the motor. One contact moved due to the centrifugal force from a couple of weights spinning around while the other contact was spring loaded from memory with more pressure the faster you wanted the mixer to go. The system finding a happy medium with the centrifugal force balancing the spring pressure. I suppose it worked but produced a lot of sparks so really surprised you got ot to work at all on the AFDD circuit. Maybe a good buy from a second hand shop as a cheap tester for AFDD😂

@efixx Месяц назад

Great insight thanks - might have to take a closer look at the motor control.

@Stueyb22 2 месяца назад

Tripping AFDD/RCBO - Does your pop-up socket contain a type 2, 2+3, 3 SPD? I've found quite a few instances of surge protected extension leads/multi-gang leads causing nuisance tripping with the SPD threshold voltage decreasing with age/being naturally low, mixed with reactive loads it can be quite an issue.

@TimmyBoja Месяц назад

10:51 - I love that word clock. They seem to vary in price wildly! 😱

@ladams5356 Месяц назад

Great video . Experienced spark know how specifically knowing to create an air gap where possible around mcb’s with sustained high load 👍👍👍👌

@efixx Месяц назад

Great to hear!

@simoncroft9792 2 месяца назад

Tidy network installation too.

@AndyK.1 2 месяца назад

What an AFDD cliffhanger.

@eliotmansfield 2 месяца назад

shitty clickbait more like 😠

@professionalineverything Месяц назад

Will AFDDs trip if I am using CMH-TT, SON-T lamps. If so I am moving to electronic ballasts for them.

@imark7777777 2 месяца назад

Interesting my suspicion is there's something that's weird in the pop-up socket which is compounded by maybe the additional fix to the cord and motor characteristic?

@CountBOBOinDAhouse 2 месяца назад

Could you explain your point from 3:10 a little more please. Why would the power be travelling in the reverse direction?

@chrisswindell7517 2 месяца назад

Does the pop-up socket have a filter? It could be a mixture of the noisy triac based speed controller and a filter doing its best to dump all the noise to earth.

@efixx 2 месяца назад

Don’t think so but we’ll investigate

@r.h.8754 2 месяца назад

The Kenwood A701 (the model shown) has a centrifugal speed governor the setting of which is controlled by the speed control knob - when the motor reaches the desired speed the governor opens a switch thus cutting the power to the motor. Although there is some capacitor-based suppression a considerable amount of sparking still occurs which is probably why the AFDD trips - it can also mess up radio reception. The mixer is class II insulated and doesn't have an earth connection. PS I've just had to say goodbye to my A701 - they were made to last!

@andrewjames3908 2 месяца назад

I dont get the trend for fitting dual stack units, wouldnt a vertical 3 phase one with a single phase conversion kit fitted be easier to work with?

@T_Perkins 2 месяца назад

Familiarity is a word that comes to mind, especially on the consumer end. The double stack units take up less space per way than a 3 phase, however marginal. Also, if by vertical you mean the ways centrally going top to bottom, cable length may have been an issue. Trend it may be, but familiarity I reckon is the key to most of it. Up and down. Rather than left and right being the same depending on which bank... I can just imagine trying to have the conversation with me ol ma with a 3 phase board... Left and right... No. I'd rather rip tarmac off the road in 0 degree weather thanks...

@pramodgavit7666 Месяц назад

Sir How much leakage current is permissible in domestic circuit.and how to measure?

@simoncollas2383 2 месяца назад

any chance of link to the Epson DB label printer please.... like the look of that !

@efixx 2 месяца назад

Here it is 👉www.docs-store.co.uk/product-page/epson-labelworks-lw-z710

@simoncollas2383 Месяц назад

thanks Guys @@efixx

@markpotter8280 2 месяца назад

Just a question I thought the outer sheaving on the tails are meant to butt up to the main switch in the DB, am I wrong in thinking this?

@efixx Месяц назад

You need to remove a small section of the protective sheath to indicate the polarity of the conductors

@markpotter8280 Месяц назад

@@efixx Thankyou for letting me know I get the point

@eddiereed5025 Месяц назад

Not best practice I believe plastic indicator sleeves used by DNO better .@@efixx

@TurboBaldur Месяц назад

When it comes to RCBOs, they exist in both single pole and dual pole versions, with the dual pole also interrupting the neutral wire on a fault. In what type of earthing system or use case is the single pole deemed insufficient and a dual pole is required?

@efixx Месяц назад

TT must be double pole. TNCS can be single unless supplying a defined special location such as an EV charger.

@raychambers3646 Месяц назад

Was the italianin stallation based around a lot of plastic casings ?

@efixx Месяц назад

Most properties in Italy are based on concrete construction so fire risk is less of an issue.

@MartinE63 2 месяца назад

3:09 Are there any markings to determine which manufacturers RCBO’s are unidirectional and which ones aren’t?

@T_Perkins 2 месяца назад

Double pole perhaps? Where by both the live and neutral are being monitored?

@ladams5356 Месяц назад

It’s a good point and hope a standard is agreed and manufactures apply

@ladams5356 Месяц назад

@@T_Perkins I believe his question is , is there a symbol on the device indicating if it is capable of correct operation with current flowing in either direction. I don’t believe there is a symbol as yet that a standard specifies . @Efixx ?

@T_Perkins Месяц назад

@@ladams5356 now you mention it, I haven't heard of a standard. However, if the schematic is drawn on the device itself, one should be able to determine its operation or reading a technical diagram for it. (I do get the point being made a bit more however) Unfortunately, mobile phone do mean there is a penny pinch in companies to say 'info is available online' rather than trying to describe anything in packaging or on the product that isn't required by law. But yes, I see the point that is being mentioned - I'm not clued up on solar or battery installs as of yet so I assumed that perhaps double pole rcbos would monitor both live and neutral as AC is alternating back and forwards... By that definition double pole rcbos should be able to monitor both incoming and outgoing changes on both live and neutral. That's my forth pence of an assumption! :)

@ladams5356 Месяц назад

@@T_Perkins while AC ‘will’ flow in and out of the mcb portion some manufacturers leakage architecture uses CT’s which are flow direction consensus and hence detection is inoperable in reverse. If you note AC CT’s are directional 👍

@deang5622 2 месяца назад

Get a digital storage oscilloscope on to the line driving the pop up socket. Get one that does FFTs, just in case that is useful.

@efixx 2 месяца назад

We’ve got one at the unit - perhaps a weekend job.

@deang5622 2 месяца назад

@@efixxWould love to see a video of the waveforms you encounter which trigger the AFDD. That would be really useful for everyone Lightening - not dissimilar to lower voltage arcing! - causes I believe wideband RF interference; I don't what waveform aspects these AFDD's trigger on, it could be a waveform shape in the time domain, or a particular spectrum in the frequency domain.

@bigjd2k 2 месяца назад

The mains filter caps regularly fail in those old mixers!

@mfx1 2 месяца назад

Does it trip Hager AFDDs ?

@freddiewithers9617 2 месяца назад

The magnetron in old microwaves causes havoc with these devices. This is compounded by the fact that many in HMOs where they are mandatory have rubbish old devices running in their rooms causing nuisance tripping. Total nightmare tbh

@efixx 2 месяца назад

Some would say that’s the real driver for moving to AFDDs

@freddiewithers9617 2 месяца назад

Yes, filters out old junk. However leads to some heated conversations with landlords/Tennant's and often involves several call-outs before the issue is resolved. Kinda awkward to charge for after charging a fortune for board change with afdd's.

@AndrewLumsden 2 месяца назад

I would still replace the cable on the Kenwood!!

@jonathanrose456 2 дня назад

Did he get written permission from Lewden to alter the designed usage of the CU prior to installation & cutting out the rear?

@justbreakingballs 2 дня назад

Yes

@TimmyBoja Месяц назад

5:14 - why are these all still rated at 100A? If the main fuse is 100A and you are adding 16A or more, these need to be rated higher - especially when there are multiple DBs running off them

@mw0358mw Месяц назад

Need a link for the clock on the wall!

@efixx Месяц назад

It's called a Qlocktwo - sit down when you google it.

@_Steven_S 2 месяца назад

But will it trip a Hager AFDD?

@paulmatthews5470 2 месяца назад

Will it shite. I have 15 of them (trying them for myself) and never tripped with a dodgy heater arcing away and melting the plug top! Won’t be installing the Hagers for customers.

@TheJoeyDeacon 2 месяца назад

Type 2 SPD? On overhead power lines??? Am I the only person splashing out for Type 1s?

@charleslockerbie4027 2 месяца назад

I agree, overhead lines should be type 1. Perhaps tho the overhead lines /transformer are just random B roll and not actually the supply for this property

@efixx 2 месяца назад

The overhead lines are to an 11kV transformer which converts to 230 /400 network which is underground and TNCS .

@craigharvey17 2 месяца назад

Was that a type 1 or 2 spd?

@efixx 2 месяца назад

Type 2 as the supply is TNCS

@AndyK.1 2 месяца назад

8:37 AFDD

@DH-tv2yw 2 месяца назад

Probably a switching power supply on the same circuit. Or something WiFi related. It will be something that you dont expect.

@efixx 2 месяца назад

Oh no not the dreaded EMI

@DH-tv2yw 2 месяца назад

We have the same issues in our home. Some appliances trip the AFDD, but you move it to a different circuit and they are fine. You switch other items off and you can use it on the original circuit. Seems to be electronic devices mixed with electrical devices that causes the tripping. Can use the TV or the hairdryer, but not both together.

@redcar2011 2 месяца назад

How come you're eating the cake And Poor Ross is in the cupboard like Harry Potter. I don't see any cake and tea of him FREE ROSS✊️😂 P.S nice work ross👍🏻

@efixx 2 месяца назад

Ross loves a cupboard he’s graduated from under the floor in an earlier video!