‘I’m feeling so American, I should probably check my cholesterol’ 😂😂😂😂

@Taaazu

Жыл бұрын

Lol haha

As an apprentice I appreciate videos like this, not only do you show the theory to it but then you show us a real world situation which is something I don't get in the classroom

@corymac

Жыл бұрын

Glad it helped mate!

You're a born trainer Cory, seriously. If you ever give up being on the job, take up a position to train others at a Tech or equivalent in the UK. Loved this! Oh, and Timmy _(Timmaaaa!)_ is eternally grateful 😂😂

@Matt-td9wx

Жыл бұрын

“Timaaaaa” 😂😂😂

@corymac

Жыл бұрын

You’re too kind

This video is full of little gems. The labelling at 16:15. "interwebs" and "vacum", love it.

Gerat video Cory, just finished my domestic installer course, and struggling to get my head round several concepts, you've made things a lot easier with these videos. And no-ones asked your peloton tag!

great video. whilst you were talking through the testing, i couldn't help but notice the labelling on the sockets - vacum and interwebs were my personal favourite 🤣

Really informative video! I'm no electrician but the way you've demoed this is 10/10

@corymac

Жыл бұрын

Glad you liked it!

brilliant, im currently on my level 2 training to be a spark and this helps me so much its one thing learning these things but its another to see it being done in real situations. your passion for the job really shines through aswell, i hope one day i will be as knowledgeable as you!

@corymac

Жыл бұрын

Glad to help!

And this right here is how you do a video for the Trades. Brings back both the pride and respect so often forgotten ✊👊 Very well executed, and much appreciated. And I'm confident in your success, no Doubt!!!!

@corymac

Жыл бұрын

💯 thanks mate

Always great to watch a Corey video drop...been a while since your last upload...Great work mate🙂

@corymac

Жыл бұрын

Thanks Dude 👍 , more to come

From watching your first video on artisan, following your music and watching oy channel. You’re are the master of all and learnt so much from you being an apprentice.

Fantastic Cory! Theory and practice. And cool real world "stuff". I look forward to the next episode. Cheers

Another great video Corey! Fun to watch and learning at the same time 👍

@corymac

Жыл бұрын

Glad to hear it!

You say you're not a teacher Cory but you certainly have a talent for it. I'm not an electrician but find your videos fascinating. Unlike my old dad who, I swear, was immune to electricity the amount of times I saw him go: "oops, that one's live!" and walk away unscathed, I would not DIY but it's really handy to gain enough understanding to recognize a good electrician from a not so good. So thanks for the lessons, I am enlightened. 😄👍

@corymac

Жыл бұрын

Thanks Jude!

Your uploads make my day, thanks for your work 👏🏼

@corymac

Жыл бұрын

Happy to hear that!! It’s absolutely my pleasure

Great video!❤ We install alot of off grid systems Adding a genny gets intreasting.most victron inverters ypu can select eartth netrual relay as the bonding point. Confusingly cory... the battery regs say to keep the pme earth in island mode!😅 Lesson number 4: if an inverter/charger is powered by both a battery bank AND the grid (or a generator), this whole ground safety connection scenario is a lot more complicated, and is highly dependent of the specs of the components. Such as: • does the inverter have a neutral/ground connection inside? • does the generator have a neutral/ground connection inside? • are you installing the right ground connections without creating ground loops? But all of this would not change what happens for the ground connections for the AC output side of the system

Timmy should be internally grateful

Great video. Was wondering how “off grid” systems treat grid connections when there is a power outage. I’m in the thinking about it stage re and off grid/ ups style so will be interested in how you plan this out. If I decide to press the button then I’ll be giving you a shout.

Love your vlogs they are always something different and educational, Thank you.

Very interesting, this explenation helped a lot with validating every step I took in my solar installation, looking forward to the next video :0!

@corymac

Жыл бұрын

Glad it was helpful!

In Oregon US, two earth rods are required now. I got away without doing that when replacing the mains (consumer panel?) since I re-terminated the original wire. I am not licensed, but allowed to do the work as a homeowner if I do permits and inspections. Passed on replacing main panel.

Brilliant - I have a smaller Multiplus II here and was wondering about the earthing if I chose to not use it on grid/ess mode. Masterclass.

Absolutely brilliant explanation! Videos are getting better and better. Please keep this kind of content coming.

@corymac

8 ай бұрын

More to come!

Working for a DNO we install these earth rods regularly, unfortunately if you cut one of those rods you will find they are copper coated steel rods😅 but love the way you explain the theory behind the earthing and bonding. Brilliant video.

Great video. Thanks for fully breaking it down .

I think "To Live and Die in LA" was your best song. But "Dance Hall Days" was great, too.

Fantastic work and a great explanation. Keep it up.

An electrician that actually draws semi-decent circuit diagrams and actually sounds confident when writing equations up on the board; I am impressed. I truly am.

Love this channel, learning and having a bit of fun, I like Timmy he needs to stick around 😀😀

@corymac

Жыл бұрын

Glad you enjoyed it!

Nice one as always Cory love watching your content 👏😎🇮🇪

@corymac

Жыл бұрын

Awesome thank you!

Great video and explanation on why we do what we do .Thanks Cory

@corymac

Жыл бұрын

Thanks for watching!

@Matt-td9wx

Жыл бұрын

@@corymac always 👌

Great video Corey! Followed you from the start at artisan. You really excel in explaining things and would be a great trainer in future! Keep it up.

@corymac

7 ай бұрын

Thanks a lot Danny 😁👍

Good man, i can thank you enough for your video(s). This was one of the clearest explanations on earth fault loop impedance. Thanks mate.

@corymac

8 ай бұрын

Glad it helped!

You're very intresting and precise in how you convey yourself! Im a Refrigeration engineer and want to become a Electrician! Your videos are so entertaining :D

Great content as always keep it up !

watchin in progress ... loving the whiteboard explanation. i'm a layman and it helped me a bunch. thanks :)

Amazing content,do keep it up Cory.

@corymac

Жыл бұрын

Appreciate it!

Lunch break videos are sorted for a while, thanks keep up the good work 👍

@corymac

Жыл бұрын

I hope it’s a decent lunch 🥙

you killed timmy! you b... loody did a good job of saving him! 😂😂 tbh, im not a sparkie but after this i now get the zs ze readings useage and the diff connection types (pme etc) bril cory! your a damn good teacher ! (and darn good sparkie too!)

@corymac

Жыл бұрын

Thanks Geoff!!!

Really interesting video Cory. As others have said, you would make a great trainer.

Great episode. As others point out, you’ve got a good teaching manner, not going to have students falling off the backs of their chairs because they’ve stopped following. Can you print a ‘vacuum’ sticker next time you are there? OCD etc.

@corymac

Жыл бұрын

Thanks Ian! 😂

8:42 😂😂 Brilliant video!! Cory love your content!!

not much classroom stuff really hits home with me straight away but your teachings do . bigup thanks and i look forward to the next vid . on a side note , what van did you get ? any good?

@corymac

Жыл бұрын

So glad to hear it! I ended up keeping the caddy, budget with moving houses and areas ( you’ll see soon 😉 ) restricted me.

Awesome bro! Learn a lot from your vids, soon starting my own small Electric business in Belgium :)

@corymac

Жыл бұрын

Go for it! You won’t regret it

Well done Cory nice episode , please give more details of work, because someone follow u mate

Absolutely excellent video!

@corymac

Жыл бұрын

Thank you very much!

Excellent content and explanation. More please.

@corymac

8 ай бұрын

More to come!

Great video again Cory 👍👍👍

Excellent Cory

Excellent video my friend! Great training techers 😉👊🏼

@corymac

Жыл бұрын

😉 Thanks mate!

Ah that’s the video I wanted, I’m just doing the same thing for mine. What size earth cable did you use? I ran 25mm dam that’s a cable and a half In conduit. I want to see if I can go six rods deep just waiting for the adapter for my drill and hopping it can go that deep lol

As someone who is about to start electrical in college your videos are so helpful

@corymac

Жыл бұрын

Glad to hear it!!

My inverter has an island mode function which requires me to install a new cable between my house and garage so im going to install an earth nest whin i dig the trench then convert the house to TT hopefully get below 20 ohm

Big thanks for a Epic video Cory., it really great to learn more from you , and adding theory method is brilliant , there no video like this for us apprentices sparky , Nice one ⚡️👊 ps which MILWAUKEE Drill do you use on the M12 , thanks ,

Brilliant…lovely and clear

@corymac

Жыл бұрын

Thanks Martin!

Great video Cory.

Love it! ❤

@corymac

Жыл бұрын

Thank you! 😊

In Belgium it's standard to have a TT-net, but the resistance should be less than 30 Ohms. (When taking the correct extra precautions, it can be between 30 and 100 Ohms.)

Thank you for the explanation very interesting

@corymac

Жыл бұрын

You’re welcome Dave!

Another cracking video Cory. Educational and interesting. I bet Jordan misses you at Artisan. 😂

@corymac

Жыл бұрын

Hope so! 😉

I see you haven't lost your angle drilling skills, Jordan must be proud. Another interesting learn with Cory. I've always thought sparks were the cleverest trades.

@corymac

Жыл бұрын

Absolutely, as a spark I agree entirely 😁🤓😉

Awesome video, wish I had you as my teacher at college! When doing your ze test for the rod you mentioned you’re looking for a value below 100ohms. I always thought the TT highest value was 200ohms? Has something changed I’m not sure about?

Brilliant video Cory

@corymac

Жыл бұрын

Thanks!

Poor Timmy.I thought he had fallen down the well!! Now you telling us he is touching the frames of ungrounded electrical equipment. Where is Lassie when you need her?. Great tutorial Cory!! I always like your cardboard classroom. Groundrods are common here in the states with only one common path to ground at each site location. It felt like we came to the duscussion without a prelim. of why you are doing the change. When you say mains .do you mean electrical utility supplyer?. Your vlogs always require a second viewing. Seperate and apart from the two moons over Myhammi what kind of Van did you get?. Happy Easter,!!!!!

Cory, if you ever want to change career and become a trainer, you’d smash it. A proper natural at explaining things well.

Hiya mate, I'm sure you were on another channel before this. Its great what you are teaching so I can learn it all from you ;) I'm a plumbing and heating engineer and just installed solar thermal. The customer has solar pv but they asked me about batteries. What batteries should they choose? I said there are a few KZread channels out there hut only a few like yours include the safety aspect and explain why we have to do it that way in England. So I want to share your channel with them. Do you have any recommendations please?

Amazing learning from you yeah

Cory Milwaukee Man Mac’s wipe board is out again shame you didn’t have a full set of colours. Maybe if you had the yellow one you could of been Timmy’s saving angel. 😂 Mockery is my only option because the Math went over my head 😊

Would be interesting to see the earth tested with an earth clamp meter to see how the result compares to the Ze test value. Presumably there isn't the area to carry out an FoP on the earth rod.

If it's the same I've used @ 14:12 it's actually a copperplated steel rod. Had to do a temporary earthing and didn't get the rod all the way in so had to cut it off and noticed

Great video, thank you

@corymac

Жыл бұрын

Glad you liked it!

Great vid Cory. 👍

@corymac

7 ай бұрын

Thanks! 😄

Brilliant

Great stuff 👍🏻

@corymac

7 ай бұрын

Thank you Mike 👍🙂

On the other hand, with an off-grid system where the inverter is contained within the building, there is no potential between you and the generating equipment until you install the earth rod. So would an IT arrangement more practicable for off-grid generation?

Love this guy 🙂🇮🇪🍀

@corymac

Жыл бұрын

We love you too!

@jk-8761

Жыл бұрын

I learn more from these videos than my useless lecturers ever taught

Another great video. You and that whiteboard is like being back a college, just not as boring. How is Timmy? hope he recovered.

@corymac

Жыл бұрын

He’s a little shaken up, but doing well overall

@gcewing

Жыл бұрын

Fortunately he only touched 49.999 volts.

Nice video. You should get a van lock on your car. Every electrician in Sweden uses them because of the break ins.

The saving for a rainy day joke got me 😂😂😂😂 ☔️

@corymac

Жыл бұрын

Glad someone got it!

@4:02 Pauline in „The League Of Gentlemen“ has pens, too... 🤣🤣

Great Video Cory love your approach to teaching stuff. But I do find the 'Generator room' a bit of a laughing nightmare i.e. the Victron is mounted on combustable chipboard, below which are a stack of Battery Packs, all sitting next to an oil tank! and you're worry about getting an electric shock. I would either have the owner move the solar system to the otherside of the room, or build a fire wall between the solar system and the oil tank.

@corymac

Жыл бұрын

There are alot of fail safes and changes still to be made. This is more of a proof of concept phase at the minute, there are ALOT more batteries, and at least 2 more Inverters to come. Also, it’s in the remotest remote part of Dorset, and a good 70 metres from the house or nearest building, so at least if it goes pop, it’ll be a good distance from anything 🤣👍🏼

@corymac

Жыл бұрын

But fair points

thank you

To answer your question. In addition to extraneous conductive parts being bonded to the main earth then the other two are: The requirements of ADS are met for the circuits All circuits within or passing through the location are protected by 30mA RCD (or RCBO/AFDD these days).

That's really interesting. Im looking at a hybrid system (without grid-tie) so imagine I'll need a local earth. I've got a load of 6mm wire for the panels' earth but is that thick enough for the external earth?

great video, timmy lives another day

Great video mate love your content! One quick query though where does it state 100ohms or less for the zs of tt system as the maximum permitted zs for a tt is 200ohms?

@deang5622

Жыл бұрын

The limit of 200 ohms is NOT the value of Zs. You are mixing up the total earth loop fault impedance with the impedance of the earth rod connection. The 200 ohm limit is on the impedance of the earth rod itself. Table 41.5 in the regs says the resistance should be as low as practical. There is no hard limit of 100 but obviously 100 is better than 150. And the key value is the Zs value for a 30mA RCD if the circuit is protected by RCD is 1667 ohms and that is Table 41.5 too.

How are you finding the Tech XL I’m thinking of getting one as my Pro PAC is a little too heavy.

A potential upgrade might be an earthing mat - a big ol copper plate that gets buried. Understandably not as convenient but worth leaving as a note for the homeowner if they have earthworks planned. That rod is a good length!

@corymac

Жыл бұрын

Check out a Condudisc!

@deang5622

Жыл бұрын

Given that the impedance is down to less than 5 Ω in this case, no upgrade is worth it. The impedance is more than low enough to trip a breaker or RCD. But as an earthing solution where the resistance is coming out too high, yes, it is a good approach.

@deang5622

Жыл бұрын

A potential upgrade would be increasing the supply voltage from 230 to 400 😭🤩🤩🤩

@L81ker

Жыл бұрын

@@deang5622 I was thinking in terms of how many years of use rather than the immediate state electrically when it's still quite new. Degradation over time.

What made you go for the kewtech kt66dl? I was considering it myself but wasn't sure.

Hi Cory, many systems installed are in island/backup mode and as long as they are G99 compliant, do not require a separate earthing rod and can use the tncs earth. Here is the extract fyi : In island mode, an installation with EESS must comply with Regulation 21 of the ESQCR, and the PCE operates as a switched alternative to the grid. All live conductors, that is line(s) and neutral, that are to be powered in island mode must be disconnected from the grid. The installation may remain connected to the distributor’s means of earthing (where this is provided). Earthing arrangements for island mode operation In connected mode, an installation with a TN earthing arrangement (TN-C-S or TN-S) may use the distributor’s means of earthing. In a TT system, the consumer’s earth electrode is used - but care needs to be taken to ensure that this provides an earth of sufficient quality. However, when the installation moves to island mode, it is important to make special earthing provisions. Regulation 551.4.3.2.1 of BS 7671 states that, in TN systems, generators operating as a switched alternative to the public supply cannot continue to rely on the distributor’s means of earthing.

@mymyohmygod

7 ай бұрын

hi Bill, im curious on this one too. My system ( not installed yet) can go island mode everyday during a set period of time ( say 10:00 am - 15:00) . How can i have a separate earthing for only this period? ( does this mean i should not connect my battery / inverter to the main MET? or can i have 2 earth connections simultaneously ?

Interesting topic! Have a question if you don't mind, are you changing from tncs to tt system?

@corymac

Жыл бұрын

In this video I am indeed!

Do you think there is a need for a 100mA Time delayed RCD before the CU as would be normal on a TT earthed system or is that protection not required here?

Hi from down under, its interesting watching how the UK system are completed

@corymac

Жыл бұрын

I’ll have to come down and see how you do things 😁🏄🏻‍♂️

@aussiegruber86

Жыл бұрын

@@corymac sounds good

Great video Cory... I'm all Earthed Out now🤯 One thing though about Gas/Water bonding... you forgot about MDPE incomers 🤫 Oh, and by the way, that kewtech is anything but basic... recently helped my nephew get one which like you he loves and at a 'bag of sand plus the dreded' ain't cheap given his lack of income at the moment. Anyway great video and keep doing what your doing. Respect 👊

@corymac

Жыл бұрын

Great point!

@corymac

Жыл бұрын

The incomers here didn’t apply, they were all plastic

Tremendous

These setups are so strange to me being in Canada, the supply connection here doesn't bring in a ground at all just hot and neutral, we always have to install ground rods or a grounding plate on every job , and then bond that to the supply neutral only at the first means of disconnect (main breaker, main disconnect) and we're done that's the only arrangement....

@deang5622

Жыл бұрын

Having the earth connected to the neutral of the incoming feed, or having a separate earth wire coming in on the incoming feed is a better strategy for earthing than using an earth rod. It is safer. Using am earth rod is the worst way to provide earthing. Firstly the earth rod gives much higher resistance/impedance than an earth wire, and secondly it is very much dependent on the moisture content of the soil, and that varies through out the year. So the Zs value is going to vary throughout the year through the seasons and hopefully it doesn't get too high.

Interesting work. Is there a requirement for measuring the earth rod resistance, and a minimum ohm value for it to be effective? Many farms are on TT network and I remember the gravel round the rod was not good at all.

@deang5622

Жыл бұрын

Yes there is. IET says no more than 200 ohms. IET says this: Table 41.5 of BS 7671:2018+A1:2020 states that 1667 ohms is the maximum earth fault loop impedance value where an RCD with a rated residual operating current of 30 mA is used. However, it is important to take into account the ‘*’ referring to note 2, which states the resistance of the installation earth electrode should be as low as practicable and a value exceeding 200 ohms may not be stable. But what does not be stable actually mean? Note 2 of Table 41.5 refers to Regulation 542.2.4 of BS 7671:2018+A1:2020, which states ‘The type and embedded depth of an earth electrode shall be such that soil drying and freezing will not increase its resistance above the required value.’ The main factor affecting resistance to Earth of an earth rod is the depth of installation. It is appreciated that this information is difficult to obtain, but to mitigate the effects of the soil drying out, the earth electrode should be installed at a depth sufficient to reach the water table of the soil to remain effective. What effect does temperature have on soil resistivity? Temperature plays a big part in soil resistivity, when the ground freezes, the resistivity increases substantially. An earth electrode which is installed during moderate weather may become ineffective during winter. Table 1 indicates typical resistance values per metre for various temperatures for assumed conditions of 15.2% moisture content sandy loam. If the soil temperature varies from 20c to -5c, the resistivity increases 10 times, from 72 Ω/m to 790 Ω/m. This is why the note referring to 200 Ω may ‘not be stable’ is so important.

Great stuff. Does Timmy have a manager ? He's probably going to need a stunt double.

You're a legend.

@corymac

Жыл бұрын

👊🏽👊🏽

Top video Cory who said you can’t teach an old dog new tricks 😊