ConduDisc and Conducrete Installation
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- Опубліковано 4 лип 2024
- Installing the ConduDisc permanently with conducrete and testing it immediately and a week later.
This is the same ConduDisc as shown in the previous video, with two bags of conductive concrete added. The hole is about 900mm / 3 feet deep.
UK: earthingservices.com/condudisc/
North America: www.saeinc.com/
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You are the man John!
You can definitely sleep good knowing your electrical system had John's stamp of approval on it!💡🆗✅👍
Hi John,
Great and informative video!
Excellent resistance readings too! Looking forward to your next upload!
Great informative video John.
Well done mate.
Indeed the product is great one and provides options beyond electrodes. Particularly valuable in the UK I suspect where space limitations are an important limitation. Well done to SAE and to you both on E5 in discussing this.
Love from Scotland 🇬🇧
I’ve got one to install for a garden office. Hoping for around 40 ohms. From what I was told you can extend the tail and choose to encase it in concrete and then attach a 16mm earth from the disc to the installation.
The master electrician A’s spoken
Better to dig a big hole (where possible) that will give a decent reading than drive a stake into the ground not knowing what it might plough through.
I find the low resistance you measure to be quite amazing - earth is very conductive by that reading.
I'm guessing here, but as it's a vineyard in the south of England it'll probably be on chalk.
I'm watching this on ConduDisc... And was very impressed by JW and the quality of the discs.... ConduCRETE however will break your video player... Don't use that
ConduDisc? Surely that's one for Techmoan?
Why not? It’s great. I’ve just put a 8 disc farm in with it and got a fab reading.
@@e5Group You'll have to send it to Big Clive for the circuit diagram, and FranLab to see what tune she can get out of it.
Or should that be the other way round...?
Interesting. I knew concrete was conductive to the point that you could put an antistatic mat (the type you walk on) on a concrete floor and you wouldn't have to connect the earth conductor. I did not expect it to be this low in resistance. I guess with the large surface area and short distance to (potentially wet) soil it checks out.
The concrete used in the video is manufactured to be far more conductive than normal concrete.
Very interesting. Thank you. Presumably the 13mm2 csa was sufficient for the fault level in this case, but do you know what options are available in cases where fault levels or disconnection times etc require larger csa earthing conductors?
The Condudisc is available with a bolted lug connection, so larger conductors can be attached.
I'm sure I saw some earth bonding to rebar in strip foundations on a new build site near me. Is this acceptable if the readings are within the specs?
Bonding or as an earth electrode? Concrete is conductive enough that the rebar might count as an extraneous part, I would certainly not want to stand barefoot on a concrete floor while holding s live wire.
That looks like a lot better to install and the readings obtained a lot better
These look a much improved alternative for the Rod. Are you able to tell us the rough cost of one and the Concrete?
@@lotecque even just a rough idea, so we can start to seriously think about recommending and installing them would be good.
Just looking on Earth services website - not too helpful, JW can you let us know how much the disc cost, I`d be interested in fitting one but can`t find any actual costs online - cheers (Tesla coil builders need great earth connections)
If you can't find it for sale, you can recreate your own "Ufer ground". I thought this was a pretty authoritative reference: www.cityofsacramento.org/-/media/Corporate/Files/CDD/Building/Forms/CDD-0237_UFER-Ground-Installation_1-01-2020.pdf?la=en
It it possible to measure the Ze at the consumer unit rather than using an earth electrode test with temporary rods?
Yes, that is an option, although it's measuring the whole earth loop back to the transformer, not just the electrode.
Where do I buy one of these and the accompanying conductive concrete John? I can’t find an obvious outlet.
earthingservices.com/condudisc/
Is this the installation of an earth?
An earthing conductor, yeah.
Getting one of these like trying to buy Rocking Horse Muck
is the reading good initially because it is still wet? A rod in the same location would have been a good comparison. Only problem being a big hole needs to be dug rather than driving a rod in.
It's mostly due to surface area. The second test at the end of the video was a week later, by which time most of the water added would have soaked away into the soil.
What the heck? That looks like a vineyard. I didn't think you had those in Britain.
Yes there are more than a few www.winecellardoor.co.uk/directory/map/
And the wine wins prizes.
Hmm, learn something every day. Good to know!
is this in the UK?
Yes
@@lightbulbgonewild3205 vineyards in the UK?
@@mrxmry3264 yep
Is this your vineyard JW? Do you sell Flameport wine? 🍷
Or port :)
Yes
Looks good. Any UK suppliers and cost? (I can't find any)
Earthing services. They are UK distribution for these. We had them on our podcast a while ago running through the discs
@@e5Group I watched EP82 Earthing without rods but no UK supplier for SAE given.
earthingservices.com/condudisc/
if id got those readings id have thought my meter was broken 😂😂 Very impressive!
I daresay the resistance values you're getting are possibly more to do with how well your red & yellow test leads are earthed than the disc under test.
Out of curiosity, if you had a TN-C-S system with one of these electrodes (20 ohms!), and the combined neutral broke, would that limit voltages on metalwork to a sensible level (i.e. a "probably not fatal" level)?
Or if you had a TT system without a GFCI (for whatever reason). Though an earth-fault wouldn't pass enough current to trip the breaker, would that good of an electrode ground substantially reduce the risk of a fatal shock?
Yes, and all TN-C-S services should have electrodes at each property for that reason. It's already required in many countries and has been for decades. Unfortunately it's not required in the UK..
It would have a similar effect on a TT system, lower electrode resistance = lower voltage on exposed parts.
@@jwflame John, all of the incoming supplies in the US are TN-C-S, and every house (and even every power pole!) has a ground (earth) electrode installed in addition to the bonding to water and gas in case the combined neutral and ground breaks.
Not a true test. The original test location could have increased in resistance.........and probably did.