The SY2-D surge protector (SPD) 

Best educational video I have seen for a long time, made me laugh so much as I have just got out of the trade after 35 years. I gave most of my 16th edition test equipment ( probably now non complaint) to a new apprentice going through the 18th edition who is now having nightmares as he now has to do CAD as well. I worked in Thailand in 1999, tried to get connector blocks for some lighting and the wholesaler said "No not have, just twist and tape, not have connector". I wish good luck to all the new guys taking up this industry in the UK, no fun any more! Before you make a comment I was an electrical inspector under the 16th edition in the commercial world, so I new my stuff then, now just DILLIGAF comes to mind. Happy days.

Brilliant Video David . . Good to see you've reached the same conclusion as I did regarding SPD's i.e practically everywhere will need one. Keep up the good work.

Nicely done! Thank you for the video, makes a lot more sense than the regs!

Thanks David.....my brain has just melted listening to that risk assessment , get the brandy bottle out quick.....😳😳😳 Cheers.....👍

This was another great video. Thank you for going to such great detail that we can all follow along.

Your a funny man. Really love your entertaining and educational videos. Whoooo those calculations

Your an absolute legend, really appreciate the videos, please keep up the good work

Just came across your site, loving it fun & informative 👍

Thanks. Both informative, and entertaining!

Fantastic!!! Entertaining & informative video thank you Mr Savoury. May your nibbles always be cheesy. Have a Happy Christmas; wishing you Peace & Prosperity in 2019 and beyond.

This is definately your BEST EVER VIDEO if this has been filmed in a fluid state and not scripted, I would definately say that you are wasted pushing bits of wire into holes, maybe at Part 16.39 you could have slowed your speach down, as it did sound like fast waffle from an auto cue, but 10 out of 10 for covering this obscure product and for covering it so well - excellent work! Mr Spence Eng

Wow I am impressed that the folks at Edmundson, gave you time to shrug their shoulders. Normally when I go in they like to let you patiently wait for what feels like forever before they grace you with a glance. And disappointed at the lack of freebie hats you got for the rest of us, shame on you David 😋. Oh and great video by the way 👍🏻

Hi David, another great channel to help us poor strugling sparkys. I'm afraid I have nothing to add but I think you did spark off one of my pet hates. - If I heard correctly; at some point you said an earth conductor of 6mm squared is required. I asume you meant 6sq mm. As the former is six times the size of the later, the difference is significant. Keep up the good work please.

Love the insert of you with the bottle.....summed up the calculation nicely

Dear sir.l loved your video.the tech was great,and loved your humer.keep up the superb work and bids.Cher's Steve.

Great info and I must admit I had the same reaction to the formula 😄

Low cost,!! I buy these in Spain for 23€ and believe it or not, they are a basic varistor that costs a couple of cents to buy, but they work,! Most quality electronic goods like TVs and Aircon have a varister incorporated on the circuit board near the supply which blows rendering the thing 'broken' and in need of major repair! So by popping in a new 20cent part and charging (sucks in teeth....) 80€ you can clean up quite nicely!😀

Made more sense than regs good video👍👍👍

Excellent video, makes surge protection a little clearer. Would appreciate a video on SPD’s & TT systems. Also a video on the use of types of RCD’s, within a standard installation. I have spoken to the niceic helpline regarding the new regulations concerning RCD types & that didn’t clear anything up either. You also mention that you have used a contactor for the shower & electric vehicle. I would be interested in how you have done this.

Great video, thanks. What a surprise to find an equation in 18th Edition that no one will be able to work out ! Who writes these regs? “Hello Mr DNO, an you please tell me the line lengths to my property from the nearest HV tower?......hello ?” Click. 🤬

very keen to get one, often lightning damage here, i suppose you could be unlucky and get a hit then the device blows and there's still some juice left in the hit to damage other devices, or there could be a second surge on same storm. My main concern is protecting an expensive solar inverter.

We used this system on our wind turbines back in the 90's.

Thanks Dave

Great video... Do you not have a busbar cover for that model CU? 🤔⚠️

very good

Since the varistor module is removable without removing the cu cover, could that allow fingers access to a live busbar? Less a problem if there is a (e.g.) mcb either side. In your setup the spd was the end device and a 2 module gap, a not uncommon scenario. £60++ for a stack of varistors seems a high price. Also the initial high normal-state resistance does drop as they arrest surges, after a number of years they may continuously draw a small amount of current (but this is why there end of life warning lights).

How did we ever get by without them ,or indeed 443.4 I mean were buildings blowing up all over the place cant say I have noticed

Great videos David. I’ve asked this question on another thread but here goes. I’m thinking what’s the point in spds on the neutral?. Neutral is already grounded to earth in tncs and tns back to the supply transformer. so putting a spd on the neutral in a property is unnecessarily doubling up. Double bonding if you like. Mmmmm

Hi David them non priority shower units look like a nice bit of kit how do you go about installing those. Can they be feed of a mcb from main c.u or do they need to come direct from mains with 25mm tails and are they plastic or metal

Interesting video thanks. I rewired a bungalow following a lightning strike about 20 years ago. The end gable and part of the roof were reduced to a pile of hardcore in the garden where it hit direct and the cables had just been vaporised in places. The consumer unit and the dnos equipment were completely fcuked beyond repair. Don't know as a little plug in SPD would have made a big difference.😂

The formula would seem to push most households out of the requirement for surge protection devices but the requirement to protect cultural heritage may be significant. UNESCO considers listed buildings to be part of the cultural and historic heritage of the UK and we are UNESCO signatory. There are about 500,000 listed building and structures in the uk and this looks like it makes surge protection a requirement in these buildings.

i am new to your channel but good on you.

Brilliant video, as always. Surely one could get one of the house staff or better still one of the grounds keepers out to clean the battlements and clear out the moat...Suits you SIR David ELE. CTR. ICI. AN!!! Oh, yes suits you indeed....🤣🤣 Re Lp I'm slightly disappointed that you didn't make a "Wheel of Lp", give it a spin and let the electrical gods decide.... 'course you could just cut out the middle man and make a "Wheel of CRL"

In a-level physics, the calculations where you just make an educated guess for unknown are called "fermi estimates" after someone who was able to calculate the power of a nuclear bomb test by just dropping pieces of ripped paper at the right time.Basically it gives you a result correct to an order of magnitude which may or may not be useful...

I have been looking for that map can you pop a link on thanks

Did you ever up the 16 mcb to a 32amp?

Great video dave 7:52 😂

Hi David just been to a NAPIT “awareness” road show concerning SPDs and you’ve better explained what’s needed in your vid than the microphone wearing “expert” had to say. I’ll recommend them to customers but it’s up to them, simples. I knew that equation was hooky when he said”contact western power for the information” especially the fact they don’t know if a property is PME or not 😄 might as well ring time team and ask Tony Robinson 🙄 I’m going to ask the client to sign a statement if they don’t want a SPD just to cover myself, you know 😉 One last thing, if your fitting it to the board is it a minor works cert that’s required as technically it’s a new circuit? Brilliant video keep swigging the scotch😊

No ones explained to me yet how the device protects the connected equipment? Do the rcds trip, what if you have rcbos ?

Hi, just to make sure i understand this right, It is not forced to install spd in domestic DB.. unless your risk assessment will give you high number?

SPD should be installed next to main switch i believe, than this way it will protect the circuits

These devices are available from China for pocket change with an extremely similar design. Not that I would trust them, but it makes it cheaper to buy the devices for testing purposes. It would be very interesting to see what would happen if one of the cheap ones was connected to the output of your Jacob's ladder. Would it really divert power to earth or would it just blow up?

Is the diagram showing type 2 spd correct? I don’t think this would work?

Why are some SPD's two module and others 1-module?

So as of May 2021 are these still advisory (as opposed to mandatory) on Domestic houses and Rental properties?

I like this guy

How does it actually protect your board/ components it doesn't turn off your main switch or rcd when there's a surge ?

If installing on a TN-C-S / PME supply do you still need a double unit like in the video, Is a single unit (L - E only) ok due to the fact that PE & N are joined together so why do you need a neutral connection? Example of a single unit: www.conrad.com/p/eaton-167593-spct2-2801-surge-arrester-surge-protection-for-switchboards-20-ka-1-pcs-1716860?WT.srch=1&vat=true

cheers .....

This needed in the Philippines I have seen problem with surge. .there they also have no earth. .bad news. .

lmao, Fantastic video David 👍

14:22 im not a sparky, why would you want to put the SPD on the load side of the RCD? woudln't this trip the RCD? or is that the point? To me with my limited understanding, the SPD will create (allow) a large flow of current through only one of the conductors, so thats going to trip the RCD. Dont we want to do that before the RCD? I woudl imagine we want to send surges to ground without creating more nuiscance trips. Please someone explain in basic terminology. cheers all. edit: im askign in the situation where the surge comes from the grid, not from within the building or premises.

I can see the price dropping quickly on these and being included in the consumer units in the near future. Bet there call then 18th edition boards 😂

Are you sure? SPD, which can be disconnected because RCD tripped?

Still don't get how it disconnects? Does it cause red to trip or what as nothing goes through it. It's just at the end isn't it. Or am I missing the obvious

👍👍👍👍👍

please I need help to connect this Siemens - TPS3A1220VX02-1 Phase Surge Protection Device, 120/240VAC can you please help me....

I think you misunderstand the term "cowboy". If a person does not install something that is not legally required, but is recommended or can be disregarded under certain conditions means this person can interpret regs not a "cowboy".

Pls send wirings diagram

But this is HOW I get my insurance company to replace all my electrical goods every few years ;)

SURELY THE OVERHEAD IS FITTED WITH LIGHTNING ARRESTERS YOU CAN SPOT THEM ALL OVER THE PLACE AROUND HERE IN THE FIELDS AND WHEN WE HAVE ANY TROUBLE YOU CAN HEAR THE BANG BECAUSE THEY HAVE A SMALL EXPLOSIVE CHARGE IN THEM IT SEEMS TO ME A LOT OF THE REGULATIONS ARE NOT TO PROTECT PEOPLE BUT TO MAKE THE JOB MORE EXPENSIVE FOR YOU GUYS AND PEOPLE BLAME YOU LADS WHEN YOU QUOTE FOR WORK

Great Video ........I have been doing this Sh*t for 40 years and can't help thinking the people who write this stuff are desperately trying to justify their jobs .....just looking for stuff to change Grrr

Fucking hilarious and informative. Maybe see you on the comedy channel soon. Subscribed. Thanks.

More clarity is needed for when SPD's are required. The CRL formula will almost always dictate an SPD is needed. The word cash cow comes to mind.

Lolol....thanks.

Funny, the Daily Fail ran a piece saying train drivers were earning about £150,000 as well. I can attest that that most certainly isn't true. Take everything in that paper with a pinch of salt.

Thumb up for 7:53! ROLF

8:07 hahahah yeah this days apparently any trade

You make me laugh, I like the bottle and the fart.

So you just take a 6mm earth to your met that right

Just spotted that BigClive did a tear down on a clone here: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-FQXecTM8yuo.html so maybe £5 rather than £64. Only one MOV inside combined with a crude breaker that relies on melting a spring loaded solder joint.

Anybody else seeing the RCD in the wiring diagram shown in middle of the video connected around the wrong way. It's correct on the video still so is this a whiskey joke I'm not getting.

Not a member of the local golfing set? Pish! What rot.

Odd device. Most suspicious. Re LEDs failing due to suspected spikes - clearly these aren't earth spikes - so I'm suggesting wiring this funky device L->L and E->N and not use the N terminal on it. It'll then only function on L-N spikes - which should be the only spikes equipment sees - apart from lightning blowing the gable end out - then who'd give a toss if a LED failed ? The good news - I've found the scope. I'll see what RCD trip times I get - later today, perhaps - after I've been to bed - then maybe leave it monitoring the mains for spikes. I knew you'd like the idea of disconnecting the supply with bolt crops.

Since when has electrical regulations been Law

like i said i am new but you dont take know s... and say how it is

I’m at a loss? Absolute zero device will protect a home if it’s hit by a lightning strike

Hahahaha

Lol

I've haven't received anything free from the NICEIC? and I talk about them quite a bit on my channel.. 🤔 😈😈😈😈

That calculation makes me laugh. Pretty ignorant of real life, unless aimed exclusively at developers and major overhaul work. It reminds me of a soundness testing procedure for domestic gas that's recently been rolled out by a major company, for permissible leaks where the meter volume has been decreased (which would usually involve capping the installation as dangerous even though it probably isn't). It's expected that you know the length and diameter of all the pipework in the installation, ie that which is buried in walls and ceilings. When I asked how this could possibly be done, I was told to "make a best guestimate." My lord. We're guesstimating whether a situation is dangerous! Exactly the same shortsightedness shown in the 18th Edition thinking that retrofitters could possibly work out the HV length. Unless you have a Grid guy on site with you to work out what HV network you're supplied from, how do you have a hope?! Must have been written by a guy who lives on a farm and can walk the full length of his DNO connection by handrailing pole to pole back to the sub.

Sad thing is some sad persons worked out this worthless academic nonsense. May as well fit them and save ageing prematurely.

Utter waste of money, only people benefitting are manufacturers! Lighting strikes where ever it wants, that map is BS!! If you have height end electrical equipment, fit one. Otherwise don’t bother

Get to the point mate!!

😕👎👎👎

Does it matter what size mcb feeds the spd?