Fault Finding Solar PV System - Electrician Life
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- čas přidán 11. 12. 2020
- Fault Finding Solar PV System - Electrician Life.
Join us as we do some fault finding on a Solar PV System
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If the inverter has galvanic isolation (a transformer) you don't need a type B rcd as it can't put dc onto the circuit. That one looks like it may not have one, so you should check the spec. Is the dc isolator built into the inverter? Good idea to start with resistance test prior to applying high voltage for an IR test as it can pick up electronics on the circuit before you blow it up...The main switch in the DB can be considered as the double pole isolator at the supply end, so the other one is redundant...Greta is a poor manipulated child, not someone to take advice about geophysics from....
Solar tech adding two cents to the live work conversation. As long as the sun is out, you're going to have DC potential at some point.
As for those Knipex pliers, they're quite useful for battery and PV panel string connections where the potential chance of an arc exists.
@DIY Projects Assuming the panels are equipped with optimizers.
99% of the projects I've seen either predate that technology, or the client didn't install due to the additional cost.
They're nice to have, but ultimately another layer of complexity.
WOW I was just thinking of how neat and tidy that board was "expect for the air supports" Would you like an inside and an outside photo of my Solar system in New Zealand? How do I sent them - there could be 4 images?
Client reports circuit breaker tripping.
Cory: immediately identifies circuit breaker is shagged.
Jordan: Becomes preoccupied with the idea that the heavy duty 4mm cable has somehow developed an intermittent dead short without the RCD noticing.
I know which one I’d rather pay £100 an hour for.
😂👍🏻
Got to justify the extortion sum of money to charge somewhere... does appear that Jordan has little knowledge and no training of solar PV and is going with what he has heard along the way... how would you fit DC isolators if it was a Micro inverter system with one behind each panel?
That is exactly what I was thinking if your getting that low reading and the rcd has not tripped it must be something inline that you are trying to read through yet again another reason when doing insulation resistance is to test first at 250v removing the chance of damaging sensitive equipment
@@cms4467 They're not micro inverters, they're micro MPPT units. The inverter is still doing the inverting. You can still fit DC isolators to a SolarEdge system.
I was not saying that this installation had micro inverters installed. I was asking the question as to how you would you fit DC isolators to micro inverters.
Mon-Fri and Sunday: working about 60 hours...
Sat night: sitting with a beer watching work related videos on CZcams😑
Can’t deny I love the videos though, keep up the good work!
Amazed watching this. My solar was put in about 10 years ago and the installation quality is in a totally different league to this!
the more i watch your videos, the more i become interested in the EV side of electrics and i am now considering doing an electricians course (full course not a 1 week course) to become a qualified electrician and specialise in the green energy side of things. keep up what you are doing and hope you inspire others to go in the same direction. credit to all electricians out there
Did you dobthe course?
I have been in the game 30 years+ and you are always learning as will all know and Artisan you are far ahead of me in the Testing side of things and more. What surprised me was a little bit of contempt re-inserting the DNO fuse . No Mask Goggles , No Gloves i used to do the same as you so i do not wish to tell you how to suck eggs lol. It was only through looking at this video's recently where a Guy explained how much damage can be done by even a simple arc .I also have noted DNO sparks NEVER re-insert these without a FULL face mask. Always enjoy your vids and think your professionalism is reflected in your subs. I would be interested in your views and understand the installation was not under load conditions when fuse was re-inserted Having worked a lot on large sites where H&E have killed the Trade we are always walking on a tight line .
Remarkable honesty in these videos, really great example of working electricians 👏👏
Super Job Cory! You found a solution that fixed it. Wow Great team work! THUMB UP!!!!!!!!!!!!! Cheer!
Great dynamics between yourself and Cory - excellent additional to the channel.
What I like about your videos is that you do things like all tradesmen. You even admit - 'What do we do' but of course you come up with the solution. II used to do electrics in my earlier day of house renovations but could never tackle what you guys have to do (and show on paper!) these days.
From a recently qualified a grade electrician from Australia , I am loving your educational and informative videos .. love your content and very interesting /beneficial for
Me to watch. Keep up the good work boys love it 👌
Thanks!
I wouldn't remember anything you see in this video he is good on EV but watching him have no clue about what he had here screamed incompetents. Nothing but false information and a clear lack of knowledge.
This new person brings a completely different and interesting dynamic.
I enjoy Cory being around✌🏼
Awesome
Cory seems like a cool dude. I feel his pain with the errm hand issues. I can recommend O'Keefe's working hands cream. Works like a dream when I remember to use it.
Genuine Top Guys! 👌 Quality as always
Rouge traders when it comes to solar. Incompetence is all I have seen in this video
Great fault finding and resolution. Good improvements to a shoddy slapdash install too. Top marks.
I Love nerding out with these Electric guys..great video!!
I agree with him about the gloves. I got used to it doing large commercial jobs, so much that you feel bare and vulnerable without them 😂
Beats getting electrocuted.
I love solar edge for the fact that you can just log in to the web portal and it will tell you each panels production etc good systems if installed correctly
I have been retired for a while now. I love the site banter. Watching this reminded me what it was like. Keep it up. Would love to see the gloves when the are printed haha.
You are correct in that all TV is rubbish in the USA also ! Love your content !
“Feeding electricity to the sun” its nice that the sun gets some energy in return !
That Cory chap sounds very professional and has he tried the vegan steak bake from Greggs, very nice
Nothing compared to the Vegan pasty you can get from The National Trust. I am no Vegan but love a good pasty. :)
Love your videos Jordan ,very interesting and informative :)
I like the tool of the day! I see it earlier in the video and thought that is a bit of me!! Will definitely be purchasing!
Awesome
so cool this EV stuff, super nice content and neat work as allways
A New title for the video, "Polishing a turd" :) Love watching and listening to your troubleshooting!
Thanks
Please don't stop making vids, very informative and beats the BBC.
That meter box was just lovely, it's just been thrown in! great job considering what you had to work with.🙂
Cory is a great balance to the team. Glad he’s on board
Thnks!
Cody’s tool of the day is a great idea!
Very interesting topic. Thank you very much. Good luck.
Was warming up to Cory till he basicly said he liked Greta 🤣🤣 Great team work keep them coming !!
😂👍
Yes, Greta is sadly (like so many) ignorant of the real science and appears to be unable to grasp the many aspects of warming that are faulted and fail the Feyman test that "If an hypothesis isn't confirmed by experiment or by observation then it is WRONG. Not that it can possibly be explained by others. Just remember that NASA has had to apologise recently for its manipulation of historic data to make it look as it the planet is warming - when of course if you start measuring from the 1930s the world is still cooling.
@@corrigenda70 If you start measuring from 1649 we're definitely warming, what's your point?
Nice job, great to watch!
Thanks
Super I always enjoy your videos helpful
Love the 'Allo 'Allo 'pull zee main fuse' impression!
Great work from you two. As questioned, this deffinitely looks like the unfamous Balkans standard install, which tends to work until it doesn`t - 50 minutes to 50 years, no promises made :)
Good job 👍
I’m a meter fitter (I know scum of the earth) but it’s good to see that electricians have to deal with poor solar installers
Very interesting as a solar user.👍👏👏👏👏👏
Nearly everything he said wasn't true he clearly know nothing about solar pv
I like Cory already. You seem well suited together.
👍
Interesting. It’s evidently a long run from the inverter to the main meter cabinet, evidently with the ‘generation’ meter also mounted in it. My own place is much more compact by comparison, but with the gen meter and the relevant RCD and switchgear on the other side of the wall, which happens to be a front porch, with the standard meter box being on the other side of it’s wall. The inverter, which is an SMA “sunny boy” 1600TL product, is also inside the front porch, with the dc isolator next to it, and some ducting up to the roof attic for the panels. Alongside the dc isolator is a warning notice that the ac must be isolated first during daylight if required - not trying to break the dc current. If the inverter is working normally, it then shuts down into a fault mode - fed by dc only, with the relevant fault display. Occasionally that happens if there’s a mains power cut during daylight.
Around 4:50 “a bit of a mess” is an accurate description!
The other thing that’s a bit hairy in your presentation is the installation of private kit inside the meter box; in general, it’s owned by the utility supplier as far as the master fuse, and the DNO beyond. So in my case, the generation meter (which belongs to me) is not in the box - just a pair of cables into it from the inverter. I’ve had to have the utility firms meter replaced after it failed - most likely due to a local thunderstorm/lightning strike. Free power for a little while after that, until I noticed the fault and had to negotiate roughly how much I’d used!
Incidentally, re ‘Smart’ meters (mentioned by others), recently I had a fair bit of correspondence with the utility supplier (SSE at that time) with their compatibility - or lack of - with solar PV. They did not want to install those at such sites then. I don’t think they know what to do about export when they are in use - the new ones should be able to measure output as well as import, but then one’s generation meter isn’t ‘smart’, so they can’t match the two together when handling ‘feed in tariff. At present, I’m on 50% deemed export, and they probably prefer to stick with that until the whole lot expires.
Distinctive and good work......... Follow you from Iraq
I enjoy your video even as a layman it teachs me alot about how electricity works in the uk! keep up the good work.!!Btw where are you based incase us viewers want to hire you for a job???
Thanks! Based in Cambridge
What excellent young chaps you are. Do you cover Leicestershire?
Interesting to watch two eyes working on a job. I wonder if it's a help or too many cooks. Some may 'think' faster but that may confuse the other in the process. I think it works if one eye details the job they will do, and the other eye reviews what they intend to do, as a waterfall.
Great vid once again Jordan. Thanks for sharing. 🐵
Great sir👍
Nice one guys 👍
There are quite a few situations were you do work live, such as industrial commercial, and medical premises. Ford's won't let you shut down a production line , so you can word dead , not will Tesco let you switch of there computers because they need a few extra sockets in there computers room . At the beginning of this year in stalled 5 hot air curtains in a yoga and gym club , that in use 7 days a week . 5 brand new circuits all connected to two live Hagar 3 phase boards . So when you work live make sure you don't work alone and make sure the person you work with know what to do in an emergency . It's on of the joys of being a sparky working on live circuits . You don't have to be mad to be a sparky but it helps
I think BigClive likes disassembling broken MCBs :)
👍
I've got a similar unit in my shed. Had a faulty MCB, totally over sensitive.
Great video. Nightmare of a space issue there especially if customer decides to upgrade to smart. One thing I'm curious about is why go straight in at 500v and not 250v?
I' am watching you video from nepal
Interesting 👍
Super video
Good stuff
I have 6 mcbs maximum on my current Wylex consumer unit. Looking to replace it with a new 18 edition dual RCD etc.
Is it a good idea to install the new one with say 12 mcbs even though I only need to use 6 mcb now but will be doing an extension next year and might need an electric shower etc.
Thank you
shower
Cory is a very good Electrician he should start up on his own
The Guy is good and agree with idea of insulated pliers
Where are the separate dc isolators??? Poking around an invertor without panel covers
giving customers the answers to fix diy = priceless well done lads you "thats entertainment"
Jordan and Cory seem like a good team so there is no need for Cory to start up on his own provided he is satisfied working with Jordan. A good team can achieve more than the individuals within it if it's working well. The challenge for Jordan is to let Cory grow and become more of a partner than an employee. Good work guys!
you can see he has got briliant future, absolutly no limits what he can achive
The subtitles for Greta are awesome! Grub grub thumb bag! 🤣🤣🤣
😂👍
love the youth in your video he is such so so funny but the future well done
Good, I picked up right in the beginning that the CB was faulty because of the sound and when you pushed it up to reset it did lower a bit. Regarding the "lockable enclosure", it would still not be acceptable to me here in SA because that specific enclosure would fall under what would be termed "suppliers" enclosure, therefor no consumer equipment would be allowed according to our regs. That would certainly save you the headache of in situations like these. I hate enclosures that look like a crow's nest with no space or order in them. Much appreciate your videos.
2 guys at £100 an hour, well at least the customer got Laurel and Hardy for their money
Why is the client not getting the installer to sort the issues with the install, they obviously don’t feel it was done right, the mcb fault might be the only fault but with the rest looking like a poor job, the relatively low amount of time checking it is all good and then being able to fix and advise the customer of anything you would recommend is also fixed!
@@russellbosley5988 got his money and run, charged top dollar I bet
Never working on anything that's live? Sometimes you don't have that luxury, for example when working on the installation in a hospital. You can't go there switch circuits off where someones life support could be connected to. And for such a purpose these pliers are made for. The partially insulated which electricians normally use are only to protect ourself. The fully insulated are to prevent a power outage caused by short-circuit. And depending on the area where we use these also to protect ourself against the arc of a short-circuit, for example in a CAT IV area. This is used in addition to an insulated rubber mat where the electrician stands on (these are also rated 1kV, like the insulated tools), insulated gloves and eventually a face shield and arc resistant clothing. And of course only by an experienced electrician.
400V, 5kA arc. Video is slowed down, that happens in 1.2 seconds:
czcams.com/video/8MsiciK-9Ew/video.html
BTW: Voltage testing is also considered as working on a live circuit...at least it is here in Germany.
I like to use dry sticks too
What a mess that was. Sterling work guys. It's always a right headache undoing and redoing what a butcher has slashed in.
The installation inside was bloody awful.
I installed these kinds of inverters quite easy to install and trouble shoot
Great video.
Thanks
@@artisanelectrics my first ❤️
What's the idea behind the two isolators, one at each end? I know you mentioned about been able to work on the CU safely, but surely the isolator would be better on the incoming tails to the CU? The other end will make the PV side safe.
When the sparky says 1.5mm is good for 23 ish amps... You don't want your ring main fitted.
I would assume that the cable run is also out of spec. But you really can't tell how far it is from The video.
That house looks like it's old and had a few refits. And sadly I can say I've seen worse.
Don't you test for DC leaks on the AC?
Do your IR testing at 250V first. Some units don't like 500V and can be costly to repair. More often than not these very low readings are hidden equipments and not cable damage.
At 18.05, yes the system should be off but you don't know if the system has been wired correctly and maybe still live when turned off. A friend of mine was shocked when he checked a large electric motor in a factory, all he did was put his hand on the motor. The company electrician had wired power to earth, yes he did chase the electrician through the factory to tell him what he thought. As for the fully insulated tool, a good idea.
8 have waited for an electrician for 6.months now. Wish there were more around.
Great video and good problem finding Jordan & team, thanks for your videos. I wondered what safety cut off feature there was so if the grid supply fails, the solar doesn’t back feed into the grid whilst the dno could be working in presumed dead equipment?
The Solar edge has that built in, not sure exactly how it works tho.
@@artisanelectrics awesome, that’s better than it being a separate unit that a ‘installer’ could forget to quote and install.
I guess the inverter must be measuring the grid supply and syncing the wave form from the inverter output to do it, so maybe this control mechanism has the supply protection built in.
I’m looking forward to PV and battery bank installations becoming common place.
Keep up the great videos. (I feel connected with the trade again after taking a totally different industry the last 10yrs).
Thanks
It’s pretty standard in most inverters, very few are even capabl of being set up in free-running mode.
Cool two guy from Ireland
Glad you spotted the missing DC isolator... Should be one per string since they are geographically separated... these PV installs were a complete wild west....
I see spider webs, Cory is not a good electricians mate, I think I need to take back what I said on the other video it appears that he is not getting on with you Jordan, he wants those ear spiders to get you he's not protecting your ears, tut tut. - great job lads keep it up the good work, I personally can't wait till I start doing work as an electricians mate on especially PV and EV I love problem solving.
Nice install, nice to see the competent schemes work. As for the gloves, the people who insist on electricians wearing gloves are numpties who don't have a clue and are pen pushers, you try putting an RJ 45 end on wearing gloves, or even getting the end of some insulation tape, you may as well wear boxing gloves.
If an electrician can't work live I don't know who can, we do live testing, again the health and safety fairy's, be like saying to a soldier you can use a gun but don't use live ammunition, the country has gone mad.
At the 15 minute mark, did you do an insulation resistance test from the meter side of the closed isolator to test the feed cable to the inverter on the other side of the isolator?
The total installation needs to be rewired and installed correctly. The customer is lucky you took on such a lash up !
Interesting
Remember working on a customers house who had one of the first solar systems fitted in the UK years ago planning had no idea of what it was . A German firm came over to fit it before all the feed in tariffs . they wired it so the old disc meter went backwards when the solar panels were producing electric. the owners soon learnt not to let the meter go back past the previous meter reading because the billing system assumed the meter had gone all the way around and a huge electric bill would appear
So they would on very sunny days run lots of electric heaters outside to make sure the meter never went too far past the last previous meter reading and if it did they would make sure they had to use a small amount of electric to stop any investigation . Every time they came to change the meter they would runaway . the installation was covered in Achtung stickers and warning stickers of a electrocuted man . free electric was far better than feed in tariffs they had years of being hassled by energy provider but always refused to change the system .
I am sure The inverter shuts down if it cannot detect a grid voltage. As the voltage from the inverter needs to be higher than the grid supply. Pleas e correct me if I’m wrong. The shut down is there to protect linesmen from shock if they are working on the lines down the road.
Yes you are correct, its called "Island protection" mandatory for grid tie inverters
Great vid guys, I haven’t seen much about solar and haven’t ever worked on that yet. Very interesting indeed. You guys seem to work really well together and bounce ideas off each other. Great team your forming there Jordan
I'm a PV installer unlearn everything he has said. Incompetence caught on video
@@gotohell6814 I’m sure Jordan knows what he is talking about…. He is forming an amazing brand
@@gmeadowcroft84 OK let me explain. A grid tied inverter in the UK must disconnect and stop producing once the AC is lost or disconnected so when he said even if you pull the main fuse you can get a shock from it he was completely wrong and shows zero knowledgeof solar this is rule number 1 we learn. The system that was installed was Solaredge an amazing system when the power is off or is put into safe mode the DC is reduced to 1v per panel and next to no current so a DC isolator is not required to work safe (it uses optimisers on each panel to 1. make it safe and 2. maximise production) he then runs a 500v insulation resistance test through the kWh meter. This could have damaged it with out killing it and would always give a low reading. He then removes the RCD and replaces it with a main switch and RCBO leaving the 6amp feed to the grid monitoring device unprotected by an RCD (this was the part with single insulation and most likely to be touched by something living hence a need for rcd) and the solar which is wired in Swa and doesn't require RCD protection if basic separation of the DC and AC which Solaregde achieves was put on the rcbo. He was correct about the type A though. I have been installing PV since 2010 trust me unlearn everything he said this was a 20min job for one guy to replace the MCB. All he has done is over charge the customer and show he is not competent to work on Solar PV safely. Unlearn what he has taught you and let him stick to EV chargers. Can I just add the original installers need stringing up.
@@gotohell6814 great knowledge…. I’m just a humble domestic spark, I don’t claim to know the in’s and out’s of solar PV. At the end of the day I think people need to remember the context of CZcams. Jordans videos are not for teaching people to install there own solar system. He is simply showing snippets of a day or two of a job he is working on. So with this in mind it’s hard to see what has been done wrong or right. I believe that Jordan and the team try to do there work to the best of there ability, what more could you ask for. Added to this if he has done something that might not be quiet right he would be more than happy to listen to them constructive views and learn from them. Let’s be fair hear we are all learning and practice the discipline of electrics…. No one is perfect ☺️
@@gmeadowcroft84 We charge the big bucks because of our knowledge. How much do you think this customer had to pay out for this incompetence. All that was needed was to change the MCB 20mins for one guy. You have chosen a good path mate I wish you all the success and remember you are not a lesser man to say I don't know I will find out.
It looked to me that when you were doing the insulation test for the feed from the inverter and you realised the meter was still connected that after you disconnected the meter and did the test the isolator was still switched off. So you were testing about 3" of cable. Or did you switch the isolator back on off camera?
If I want to future proof my house for possible future solar install, what size/core NYY-J(?) cable should I run thru the house (From the consumer unit area to the attic).
Currently doing major renovation and would like to put the cable in now to avoid decorating/trunking issues if we ever decide to add solar PV.
What size system you planning? What is the length of run? When working out cable size remember you are only allowed 1% volt drop on solar
I'm on the market for a clamp on tester that does EVERYTHING! LO-Z, HZ, Temp, AC/DC Amps and volts. Is there one that can do Amp testing with the clamp and the leads? also, I've heard that Klein really only works well in the 0-40 celsius range. And Fluke is like really $$$$
Caddy van tour please!!
Wrong electrician I think 😂
Oh how I wish you where in Bristol !
Didn't you need to change the MCB 6A with an RCBO 6A (or an Combination of one RCCB and one MCB)? The Original Installation was through the RCCB to both of the MCB. Now you have one RCBO and one MCB without RCCB protection. Please let me know whether that is correct. Thanks. BTW: I like your channel. Greetings from Austria (The Country without the kangaroo's).
Hi been following your channel for a while I've checked your website and it says you can travel around an hour from Cambridge. We've relocated to Leicestershire and would like to have you fit a Zappi in the new year. Maybe we can do a video each on our channels of it emphasising the great PV feature? Well have 16 panels to use. Cheers George
Looking at the number of panels it doesn’t want to be on a 32amp mcb or rcbo... 4kw setup 16/20 max
Does it actually need to be rcd protected? Certainly if it was an armoured cable Then it wouldn’t have to be
U assuming the panels are 250w or less looking at the age of the inverter you maybe correct but an assumption non the less
Cory when I was a lad I was told to pizz on me hands to toughen them up 🤔😳 but I do wood not sparks
did you do it is what im asking?
“ Gabriel” nope but some times now but that’s only because I’m old lol
What would be amazing for Solar fault finding panel side would be a DC volt stick/pen wish it was a thing! I’m a solar PV installer and it would save so much time lifting each panel and looking for un connected panels
Great video. Random question - What make are the jackets you are wearing? Interested in them for my business 👍
You need more to worry about.... lol
If you pull the main fuse then the solar inverter will shuts off. One of the basic safety features of all grid-tied and hybrid inverters need to be approved for connecting to the power grid.
You are right, it's more entertaining than the rubbish that is on T.V. even here in New Zealand.
Haha thanks
Hahaha what great people - Happy days! :D
It takes a minimum of 3 mins for the inverter to kick in after supply has been switch on check out G98/G99 standards, and MCS, if you want a bit of advice on solar drop me a PM, sometimes the DC disconnect isolators are built in to inverter, what size is the system if it’s more than 16 amp it requires DNO approval so should only be on a 16 amp mcb unless there’s DNO approval (G99) ( what is max out put of inverter )
Just FYI you don’t need 2 CTs the Eddi will kick in based on the CT which measure the incoming supply, but you get more detail on the Eddi with solar CT
Physically that looks like a 4kw inverter and there aren't many available until you get over 12kw
It's solaredge dc isolation happens under the panels with the optimisers
You walked by the DC isolator lads, on the inverter box look at the lower left sticker, HUmmm! Makes me wonder.
send the faulty switch to bigclivedotcom for autopsy
Meter fitter is going to have fun fitting a smart meter in with all that crap
What a great excuse to delay the smart meter install, I think I will go and clutter my box so it won’t fit
@@electricery smart meter installation is optional or just ignore your supplier like I am with eon
@@haldo691 i do ignore them, unforturately one day some dick in government will force it to be compulsory because the Smart Grid needs them everywhere so they can control the useage
not best practice to fit any equipment in meter cupboard but us sparkies sometimes have had to do it.