JasonPrince

And I would think that is exactly why we had the loose connection in the beginning and this is where the intial burnt cable took place on the live side of the DC

They have used that for my genset connection into the 2nd AC input, as far as I can tell.

This is what I was quoted on and paid for. Somehow now that I have scrutinised it somewhat after all this and the comments made above, it just does not seem to add up. Queries already would be the fuse 250amp vs installed 100amp. Solar combiner for 5kva not sure where that is. 5kva DC protection box - I would think is the box I have highlighted in previous images.

There is a breaker inside that particular box as well. I will take an image of it and post it tomorrow. I will also post the quote they sent me and ask you gentleman to have a look through that and see if everything that has been quoted on, paid for, has actually been installed.

Hi Visn I get as much and appreciate the earnest response I get from everyone here. I am trying to get in touch with an electrician who I use here at home, and trust. Having him on site will put me far more at ease with this situation, but still comes down to the fact that you trust reputable companies to install correctly and not leave you in the predicament I am currently in. Pretty disappointed to be honest. Makes me wonder (not being as informed as the rest of you here are) if this is the only fault I will find in this installation. One can only hope.

Hi Jaco. Just saw this now after our telephonic conversation - what is the combiner box? I know there is a box that houses fuses in it but those as far as I understand are the battery fuses and there is only one set - in other words all the strings are combined if I understand you correctly? See the image attached where I have circled the unit - is that the combiner box? If so that only has the one fuse in it, and if I pull that out it eliminates use of the batterys. Easiest option here for me is to just turn off the PV array isolator till I can get this sorted out it seems.

Hi Jaco. Thanks for the reply and information. Initially there was a loose connection on the live and it burnt out the bottom of the isolator. Luckily we smelt it and turned the PV array isolator off. They then came to correct the loose connection and replaced cables and burnt isolator but have run the same cables again. It was only after this that I started paying attention to the heat being generated in the cable and reported this to them. They came once to inspect after I told them about the heat generating in the cables and they said that maybe there was too much congestion in the trunking and that's why the cables were generating heat. When I called and said that that's impossible, the installer mentioned contacting someone from Victron to confirm cable sizing - then we locked down. Am I in present danger running this system as it is currently - in other words can it start fires? Sorry for the noob questions but I am no electrician. @Jaco de Jongh is 10mm/16mm adequate for the PV array? They do get warm to the touch but nowhere near in comparison to the battery cables. Also is it normal for your MPPT to get quite warm during high production times?

If I am not mistaken that is 25mm that is running into the MPPT battery connector? See attached image where wiring connects to isolator - see how the neutral has heated and melted the housing.

That's coming out of the MPPT

Thanks @Gerlach on my way home now from work. Will post images shortly.

Hi Everyone I have had a Victron System installed in my home and while everything works as supposed, for some or other reason the DC cabling that runs from my MPPT to the Batt is getting extrmemly hot - as in it will burn your fingers if you touch it? I asked my installer if this is normal as I was seeing marks where the cable was touching the trunking and it was starting to melt the trunking where it resided on it - his reply was no, but that he cant work it out as the cable is rated to carry so many amps and that the input on that cable in amps from the MPPT gets nowhere near that. I am based in Port Alfred and they are based in Port Elizabeth, and now with the lockdown they cant come out to see to this problem - if it is a problem? But surely a cable only gets that hot when its carrying above its rated capacity? We live in a predominantly wooden home - 60/40 split (wood/concrete,brick) but still I am concerned that this is a fire risk? This system has run for over 40 days now and no fire yet, so while I might be a little paranoid, Id rather just get some information from the likes of the folks here who know these setups really well. The heat is also only felt on the live wire coming from the MPPT (red wire) - but you can also feel the heat coming out of the junction box that houses the 100amp fuses and isolator switches for the batteries. I can provide photos and more information if needed. Total System consists of following: Quattro 8000kva, MPPT 250/100, Colour Control, 7kwh Pylontech (2 x US3000), 16 * 340w Peimar panels Would appreciate any feedback so that I can take it up with the installers.