Timmyk

Did it! Managed to get a login for SetApp. Half an hour of setup or so and I'm up and running! Only making a measly 150w right now but hopefully that's just because it's 7pm. Thanks again everyone! Very grateful for all the help to get it going.

Exactly. Which sadly I can’t get on without registering as an installer. I can’t fathom why they’d be so obtuse about giving access to the app. It even says in the manual that you can sign up for instant access to SetApp from within the app - a feature they must have subsequently removed

That female MC4 with the red multimeter tip inserted inserts into the +ve labelled connector on the inverter. And seems from the multimeter reading that the polarity is therefore correct. thanks for all your consistent help with this by the way - really very much appreciated!

I believe so yes. I’ve checked it a bunch of times with a multimeter and pretty sure I’ve got it right. difficult to explain in words so hopefully this photo makes sense!

Apologies. By failing pairing I mean it does not want to pair with the optimiser when I try to do it manually using the toggle switch. Additionally whilst I can get connected using my phone, I can’t actually use Solaredge’s setup app ‘SetApp’ because you need an installer login, which I don’t have. Any advice appreciated. Was very much looking forward to getting this running today!

I can yes. But I can’t get into SetApp without an installer login.

Thanks. Seems there is a toggle sequence to try to pair (just hold on ‘P’ for 10 secs) but mine just keeps failing pairing and throws an error light. The optimiser is making 10V as it’s supposed to. Bit lost on this one now.

Okay so FINALLY all plugged in to the consumer unit. But I've hit another barrier. To commission the inverter I need to use SolarEdge's 'SetApp' on my iPhone. All their FAQs say you can instantly register to access settings on the inverter. But there is nowhere to register an account to be able to do this. So without a username and login I can't get into the app to commission the inverter. So incredibly frustrating! Is there anyone here who knows how to get a SetApp login immediately, or who could lend me their login details? Big ask I know but I only need it to be able to set up the inverter. Thanks if you can help T

So I had to get back out there on the roof and re-wire the panels 🙄 But now at least the optimiser is outputting 10V as it's supposed to and all seems to be fine. Haven't quite worked up the courage yet to attach a plug and plug it in to a socket 😬 Got a day off tomorrow so might give it a go but there seems to be pretty mixed feelings about it on here! I have manage to get a (non-solar) electrician to agree to come and attach it to the consumer unit in the near future. Any chance you know what amp MCB I should get for him? Output is max 2kW and 9.5A. 10A or 16A? Thanks!

No. Way. I did not know this was possible! That would be fantastic! There's a socket directly next to the fusebox so can I just plug it in there and get it going temporarily?! It's been driving me nuts waiting for someone to come and get it wired in! One interesting problem has arisen this evening - I got everything wired into the optimiser and measured the voltage it was producing. My setup is total 6 panels with 2 panels per input to the optimiser. As the optimiser does 4-8 panels (4 inputs, max 2 panels per input) I am only using 3 of the available inputs. I kept the final one free for if/when I can add 2 more panels to the flat roof. The manual says that when the optimiser is disconnected from the inverter or the inverter is off, the optimiser will only output 10V total. Any less than that and there is a polarity/some other issue elsewhere. I am getting 7.5V. I tried with just 2 panels connected to a single input and it produced 2.5V. My interpretation of that is that I've 'lost' 2.5V by leaving one of the inputs to the optimiser empty with no PV input. I have no idea if this matters or not and appreciate it's probably quite a niche problem, if it even is a problem. I suppose the only ways of know are 1) emailing SolarEdge tech support or 2) plugging the inverter in as you've suggested and seeing what it produces Any suggestions on that? By the way - I am very very grateful for your help on this. Couldn't have got this far without it! Thank you!

Okay so this now runs: 1. Optimiser(+ve)-> L1 -> T1 -> L2 -> T2 -> inverter +ve 2. Optimiser (-ve) -> N -> N -> L3 -> T3 -> inverter -ve Lots of wiring inside the isolator as you can see but I’ve taken your advice and gone for best practice so hopefully you approve of it! AC I’ve left as it was. Not ideal I appreciate but as you said it’ll work. Now I just need to test the panels and inverter are working and then get someone willing to wire it into the fuse box. Anything I’ve missed/words of warning? thanks again for all the assistance Tim

Thanks again. I can probably wire the DC isolator as you've suggested without much of an issue to be fair. Interesting they've shown it like they have though - everything coming in and out of the T side. There's also pre-fitted connectors between L1 & L2 then L3 & N which I'll have to remove to do it properly. Weird

The terminals to the consumer unit. I’ve currently got T1 going to the consumer unit. So I’m upside down, correct? Interestingly this is the wiring guide for the DC isolator, which shows input from the PV array and output to the inverter all in T1-3. Not the best quality photo but the lower side of this is T1-3.

Thanks. I think I’ve got the AC isolator the right way round. The live coming from the inverter is connected to L1, and T1 outputs to the consumer unit. Technically though I guess both sides of this are live as one is an input from the inverter and the other is an output to and input from the consumer unit. Regarding the DC isolator - understand that the live side (from the panels) goes into the L side. I will put one into L1 and the other into N for the sake of neatness. T side will output to the inverter. Which is annoying as it’s basically upside down! Am I all correct there? thanks again

Ac isolator: