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Hi, yeah I haven't finished editing them yet. Part 2 is almost done, sorry for the delay ;-)

Yeah thanks, just been busy with work. Everything's going really well and have a lot of editing to do!. Next video is coming out soon :-)

Correct: Only for units in parallel: Both the DC and AC wiring needs to be symmetrical PER PHASE

Yeah, that makes a lot of sense, actually. I have quoted the Victron Wiring Handbook several times as it's a safe bet with these things bit you're right, having seen the system running now, all 3 phases operate on different loads all the time. I'm sure there's a good reason why they recommend it, but I agree with what you're saying totally.

victron training vid guy says in 3 phase not super important the dc cables need to be same length to each inverter

@@TheKilowattChallenge well as long there is shunt and cerbo and/or there is "single source of Voltage and Current" then DC cabling doesn't matter for simple (1 inverter charger per phase) setup. Cable lenght must be same (for same polarity i.e. same lengths of all positive and same lengths of negatives) in these cases: - parallel connection of batteries: for example connecting 4 units of pylontechs to Lynx - parallel connection of inverters: for example having 2 Multiplus per one phase - then the two multipluses has to have "identical wiring resistance".

I only have good cells left which I'm going to sell I'm afraid

@@TheKilowattChallenge so how much are you willing to sale.. I hope you will bring the price down for me due to shipping cost 😀.

Once they're all tested, they'll be around 1euro each depending on capacity

@@TheKilowattChallenge wow 😔, about #1,430 to 1 euro.. no way for me then 😞

Sounds good, let's hope for lots of sunshine :-)

@@TheKilowattChallenge no wish it was a 10000 multiplus 2 instead of the 5000 would have given better tolerance with the high demand stuff, but another solar inverter I think should be better than upgrading the multi

Thanks

I am thanks

Yeah my 75mm cable starts getting a little warm at around d 150 amps!

Let hope we never have to test it :-)

It's certainly the minimum for my setup :-) I've been running them for a while and they're working great, each cable is less than a meter long so the resistance is as low as it could ever be for that cable etc. You're right to highlight it though, but it's stated in the manual as being the correct diameter for this equipment.

Darren what’s happening?? So on my front my multiplus 2 48/5000 has gone issues with the AC solar and how well it balances so made way for a multi 2 48/10000 and another array of 1.5kW wish I had the multiplus first as I could have increased the array to the multi 1to1 rule oh well I’ve got room for expansion now

Interesting, well in that case, I'd go with your sensor theory because they're reading slightly out even under no load 👍

Haha yeah well spotted. They've designed it so its really easy to install in either direction - thank goodness! DC Cabling cutting and crimping video coming out next ;-)

Yep, that's what happens :-)

Nice! Every watt counts! :-)

Already a member. Tack! :-)

I know right, thank god I read the manual! A did a lot of youtubing! :-) Actually, Victron has published a whitewater called Wiring Unlimited, which applies to all installations. It is well worth a read!

With zero load the voltage difference will be zero, regardless of the cable size, but under load the voltage drop will of course increase. Unfortunately, cable length is the least of your worries because crimp quality can make more of a difference. So be sure to actually measure the resistance of each cable assembly using a suitable measuring device.

Oh I didn't do that. I'd better do a temperature check when the chargers and inverters are running a full pelt. Thanks for the tip!!! :-)

Hey, it's your fault there hasn't been any videos for the last 16 weeks! #itsjohnsfault

@@TheKilowattChallenge Nope not my fault just ask your boss lol. When is the next video being released, looking forward to seeing the next stage

Sounds good. DVCC is excellent, works really well. How many chargers do you have?

@@TheKilowattChallenge I only have the one, it’s taken me since January just to get that stuff as had to get the mains moved as well as new fusebox inorder for it to all go through the inverter, my house is only single phase but Victron kit isn’t cheap as you well know.

Make sure your house is wired to TNS standard, that means a separate neutral and earth all the way through.

@@TheKilowattChallenge I’ve changed my wiring to TT that’s what costed a lot to do it with a double CU, but I did go OTT with the stake and earth cable 25mm and 4 and a half rods they got 2.15ohms from the setup and it was continuing to drop as the backfill compressed the rods

Lol sorry if you got catfished on the title. Yeah the crimping video is next and it's up close and in detail. It'll be up in a few days :-)

Ja, du måste ha din egen jordtag ansluten i trädgården, vid huset, så nära säkringarna som möjligt. Om din el-kabel blir avskuren och du inte har en Jordan, kommer det inte finnas någon väg till jord. Om det händer och du har en felaktig enhet, kommer du vara den enklaste vägen till jord om du rör vid den, vilket kan ge dig en mycket dålig hårdag!

Haha!

Yeah, 32 cells are a lot easier to maintain than 3200! :-)

Actually, it's funny you should say that, they are really loud! List to the last 10 seconds of my last video and you'll hear it!

Yep I'm up and running with a few small things to finish off. If you jump onto the discord server, I'll explain more and give you some pointers

@@TheKilowattChallenge Thanks Darren

Hi Darren, I don't know if it's me but the discord server appears to be empty 😒

Are you sure you're in the right place? This is the link to the lounge: discord.gg/TPmRztpv

Yes, i'm in 😀just as an f.y.i. this url is not the same as the one above but all good now ☝

Hi Mark, yeah I spent weeks thinking about this as well. In the end I went for the bigger chargers because I was warned about over volting the strings by a couple of victron users. Your 130% over spec worries me, I to have sub optimal conditions but on several occasions my chargers have been able to charger at over 1kw of the rated panels because they were cold. The cold weather increases the voltage quite a lot, its worth googling and may cause your chargers to shut down periodically. Have you looked at the victron PV array calculator? It's bang on correct and well worth putting your faith into it.

@@TheKilowattChallenge I ran all of my calculations via the Victron calculator and these were the recommended options. The largest of my roof arrays 32 x 470W as with my other arrays can be wired in different ways depening what you want to achieve. If I run 4S4P the voltage is lower and each array fits with an MPPT 250/100 (800€ each). If I arranged the panels in 4 strings each with 8 panels in series, obviously much higher voltage / string so a smidge lower loss (but as I only have 7 - 8 meter of 6mm MC4 its negligible) and Victron calculator suggested RS450/200TP costing €2100. Similar situation for other arrays, and in total with MPPTs its saving 1400€ and in my mind I have to answer the question of benefit vs cost. Obviously a lot more cables with 4 x MPPTs but equally 1400€ is a lot to pay for improved communication ... so I was looking for other reasons to go with the RS units. Its a hefty premium to reduce reduce installation footprint but obviously this is a major consideration for some. As you obviously thought a lot about this I was wondering what finally swung the decision!

Have you spoke to your local Victron dealer? If not, give them a call, they helped me a lot. My local Victron rep spent some time with me and we worked on both the chargers and the inverters. It's such a massive investment, get all the expert help you can! Join our discord server and there's other victron users in there as well who can help. You're doing the right thing by asking but remember this is a 10 year investment, don't cut corners, buy the best you can because after it's installed, you won't want to be worrying about it. Jump onto Discord, I'm sure a few of the others will chip in ;-)

Very soon!

@@TheKilowattChallenge That’s great news because in September I’ll be installing a similar system 🙂

Cool, how many kW solar and kWh battery?

@@TheKilowattChallenge 11Kw of Solar and 28.6kWh of batteries. 2 x VICTRON ENERGY MULTIPLUS-II 48/5000/70-50 and 1 x VICTRON ENERGY MPPT RS 450/200. Looking forward to watching your install / configuration. To be honest without CZcams I would not have taken on this project, but now I’m so up for this...

Lot's more to come, just going through a busy patch at work, will be back with my next video in a few weeks. Which chemistry of battery are you going for?

@@TheKilowattChallenge going for LFP batteries what about yourself? Can’t wait for the next video, hardest thing I think is the programming so many options lots not fully explained either.

Yep, takes a while to get your head around everything but the manuals tell you everything you need to know. I've gone LFP as well

Good question, I would give your local Victron supplier a call and check your local rules will permit how the Victron daisy chaining works. Yes you can configure them in different ways but I'm not 100% sure they'll do what you're looking for.

@AvocaSingleTrack - He does not live in the USA.

Yeah I i did but I settled on the more popular II's

I still have a couple of thousand cells in the garage, we'll see what happens ;-)

We don't mention the hole :-)

#Ireallyneedtocatchuponvideoediting :-)

Vi prata inte om hålet :-)

Hiya Brian, nice to hear from you again, hope you and the wife are well :-) Well, I can tell you mate, I'm not missing anything today, my brand new 365 watt solar panels are under a foot of snow LOL! Take care mate, look after yourselves and as always, thanks for contributing to the channel, I'm happy to be able to give a little back. If you join the discord channel, I'd love to have a video call with you both and give you a behind the scenes video call to show you where I'm up to in real time. Follow the discord link in the video description. Cheers Brian :-)

@@TheKilowattChallenge Very nice of you to offer Darren, however, I don't presently have a web cam and my Camera on my phone's very poor quality. But if things change, I will take you up on that. You mentioned in the video that you were a coder, I'm just learning to code an Arduino. For someone who hasn't coded since 1984 using BASIC, I'm finding it challenging.

Ahh I just found your reply Brian, the new CZcams Studio app isn't very good with follow up comments unfortunately. How's the coding coming along?

@@TheKilowattChallenge I'm getting there with the coding. But it's a lot to learn and I keep having to take breaks; just to let it sink in. Is the solar system giving you what you were looking for?

Yeah I'm the same with learning Swedish, just 1 bite at a time :-) It is Brian, it's fantastic, almost everything is installed now but I'm along way behind with my videos unfortunately but hey, I have some holiday time coming up. Speak soon! Cjeers

Yeah nobody told me about the 2 holes inside the cover lol! Actually, they're really handy because they're your last change at final adjustments and levelling. Damn those things are heavy!

Yeah it's coming along nicely thanks

Lol they do not!! Haha

The templates I made weren't perfect actually, they were close enough for what I needed anyway. Let's just hope someone from Victron one day sees how long it took to measure and hang the kit. The last 2 videos are around 1 hour long, just to get to this point and that's edited and cut a lot... haha! Like I said in the previous video, if they just took a closer look at the gaps in their dimension drawings or gave us a template, it would be soooo much easier :-)

Haha its about 90% edited, I'll release it this weekend. In real time, i.e. today, all the kit is in, the cells are here, and the electricians are coming again tomorrow to test everything and connect it all to the network. I have about 20 videos in the queue so there's loads of content on the way. It's been a crazy few weeks :-)

​@@TheKilowattChallenge I was thinking the videos would be a little behind... but 20 😮 I will order my 48/5000 next week. whether it's on the list or not hope yours all connects up ok

What a great time to be a Victron sales rep evening commission in the UK lol!

​@@TheKilowattChallenge I just looked the Multiplus II 48/3000 is UK Compliant as of the 14 Mar 2023 still waiting for the 5000's I want two 5000s, but it's time to order mine. the sparky is coming tomorrow, to see what work needs doing

Where you up to then?? Is it all in yet? :-)

Thanks, I really should write a script but its soooo not my style :-)

Ahh that's interesting. I heard on the grapevine that they resubmitted last week, keep a sharp eye ;-)

​@@TheKilowattChallenge yes, on friday it changed to ""Awaiting assessment". but the 48/3000 did the same last week and it's now back to "Further information required" So fingers crossed they sort it soon.

@IamMotorHomeless I'm sure it won't be long, it's a fantastic inverter, probably the best on the market at the moment so it'll be really popular when it gets on that list!

Back on the list.

​@@Fester_ yes, got mine running and approve middle of last year :)

Thankfully after I filmed this, the Government here in Sweden began to pay out refunds to help people with their very high bills. We should get our first payment at the end of this month.

I almost did. They're all installed now, I just need to edit the video and upload it :-)

When I connected everything at the end of the video, I was struggling to hold it up, it's massive and dead heavy. Yeah it's expensive, really expensive mind. Actually when everything's in, I should do a "how much did it all cost" video. Good idea, thanks Russel.

Great idea, I wish I'd thought of that lol!

Cool, yeah I'm doing the same at the moment. Just takes so much more time to film everything :-)

Yeah I think the VE Can/Bus network is fantastic as well. I'll already hung the inverters on the wall now, hopefully I never have to lift those again LOL

So you don't need the terminators... Interesting :-)

It’s discussed here -> czcams.com/video/ZntrN-J2xkQ/video.html

Yeah I just watched that part of the video... Very interesting!

I believe the 2 ve.bus ports on the MultiplusII are used to daisy chain several of them together. You then hook-up either an MK3, smart dongle or GX device to one of the free ve.bus ports in order to control all devices on the chain.