Mark M

Thanks for the response. See attached for exact setting. I have now set to 222Ah. Inverter is 8kw Sunsynk.

Hi everyone. Hope you can help? I'm having a bit of an argument with my installer on a setting and would appreciate it If someone can settle it. Am installing 3 Pylontech US3000C batteries. Installer has inserted battery capacity as 111Ah and I am saying it should be 222Ah? He says any higher than 111 could damage the battery Not even sure if it makes any difference as the battery can communicate with the inverter? Thanks for the help! Mark

Hi All. Have encountered a strange situation lately and hoping someone can assist me. Lately I have noticed that when my battery is depleted and there is no grid, once the grid is restored, the battery is automatically charged to 100% from the grid despite the fact that there is no tick in any of the grid charge boxes under system mode. Is this expected behavior? Would assume not? Thanks for your help Mark

Hi All This forum has been so useful to me in the passed, I thought I'll seek some profession advise again I live in road that is secured by a security gate that is currently being powered by one of the residents. Would it be viable and possible to have this powered exclusively by Solar/Battery? The idea would be to free the resident from having to use his electricity and then have the other residents reimburse him. I guess we would be able to keep that option open in emergency or when there's no sun for a few days. PS. if there are any installers here that can do this, would be happy to chat Thanks Mark

Hi All I have 2 solar geysers being heated by an evacuated tube system. The system seems to be working pretty well and don't have any complaints. Its about 7 years old. Is it worth serving the system, and could this make it a bit more efficient? Thanks Mark

I think the trip only seems to happen with the Deye inverters? Noticed on a friends Deye aswell. I have a sunsynk 8kw inverter and have managed to get to over 10kw, with no trip or issue.

Hi All I've now had my solar set-up for about a month, and thought I would share my initial thoughts and have some questions. My set-up consists of: 12 x 460w solar panels - 6 on each MPPT, 1 string facing NE and 1 facing NW. 2 x 3.5 Pylontech batteries 1 x 8kw Sunsynk Inverter Photos of the set up attached. Very happy with the work. Neat and unobtrusive. I have everything (except underfloor heating) running through the UPS side of the Inverter, and also have 2 solar geysers. Now that its winter, and need to use the element to top up the geysers, I have set the timers to come on in the middle of the day when the sun is shining, and the geysers remain hot enough for night time showers. My batteries are currently getting me though the night, until the geysers kick in at 05:00, which then quickly depletes the battery and Eskom takes over. Had originally thought I may purchase an additional battery, but seem to be fine for now with 2. Ofcourse I want to preserve the system to last as long as possible and therefore have a few questions, which I am hoping some of the forum's experts can answer? Will these batteries still last the expected 10 years even though am cycling them currently from 100% to 20% every night? Even though these batteries have a DoD% of 95%, I have set the SOC% not to go below 20%. Am I being too cautious or can I cycle the batteries down to about 10% SOC every night. What should I do if I am away from home for about 4 weeks? Is it fine to keep the system connected? My concern is the batteries sitting at such a high SOC% for so long as will have almost nothing depleting the battery at night. Must also just say how amazing this forum has been. Would never have been able to make such an informed decision about my set-up without this forum. You guys are great! Thanks All Mark

I completed my install about a month ago and installer also didnt use the CT coil. Almost everything is on the UPS side, which works fine as I have the 8kw inverter and load rarely exceeds this. As the Limit to load only is ticked, it works perfectly. Is there any risk running it this way without the CT coil installed?

I'm liking what I'm reading about the sunsynk... So don't want to do away with that.

Thanks @Tariqand @Leshen

I'm facing a similar scenario for my installation tomorrow. Also have a 3 phase, from city power and wondering what the best set up would be. My thinking is to have the following : 1 phase for my underfloor heating which will be completely seperate from the inverter (never use it) 1 phase for essential 1 phase for non essential. I am installing an 8kw sunsynk with 2 x 3.5kw pylontech batteries. Would this setup be possible or is there a better solution.

R 30 000 Inc Vat Included all labour, wires, mounting etc.

System has been ordered...So excited!! 12 x Jinko 460W panels Sunsynk 8kw Inverter 2 x Pylontech 3000C Batteries Thanks all for your help, not sure what I would have done without this forum!

Sorry, have one last question.. I've just been told that the below pv panel's current is too high for the 5kw inverter: I know the max input current is 11A per MPPT. Do look at Isc or Imp? Tiger 460W Mono-Facial Electrical Data | STC* Nominal Max. Power (Pmax): 460W Opt. Operating Voltage (Vmp): 43.08V Opt. Operating Current (Imp): 10.68A Open Circuit Voltage (Voc): 51.70V Short Circuit Current (Isc): 11.50A Module Efficiency up to: 20.49%

Thanks all for your responses, been a great help. Now, 1 last question before I sign the quote and go ahead. Deye or SunSynk. Installer says better support with Deye, but from reading this forum, I tend to think think SunSynk is the better option?

I want the element on non essential and pump and controller on essesntial. Thinking is to have the element on non essential so that It doesnt drain all the battery and possibly cause a trip if loadshedding hits.

I'm planning a similar set up to @Craigm, except I have a solar geyser. Was also planning on setting up on the non essential side, but then have a problem if no grid. What would be ideal is if I could have the pump and geyserwise controller on essential, and the element on non essential. This way atleast I will have hot water at night if no power in the day. Not sure if thats possible though? Would still have an issue in the morning though.

This could be the reason the installers I spoke to said that it cant be done. They were referring to Deye inverters, which perhaps the software (different from SunSynk's software) doesnt allow for this?

Great. Good to know, thank you

And the system was fine? No trip or anything?

Hi Bob Yes, you are correct, but my thinking is that the excess power needed will just be pulled from the grid, assuming night time and Eskom available?

Thanks very much Tariq That confirms it then, the 5kw will be perfect for me. I hope to be up and running in the next few weeks.

Hi All I'm trying to get an answer on the passthrough functionality on the SunSynk Inverters before I purchase. All the installers I have spoken to seem to give a different answer (not sure if its just because they want me to buy a bigger system?) My understanding is as follows: Lets assume its the 5Kw Inverter Grid on I can pull more power than the 5kw safely for an extended period of time. The excess power would just be pulled from the grid, and this will not damage the inverter. Grid Off/Loadshedding I am restricted to the 5kw, and anything above this will trip the inverter. If the above is true, I will be fine with the 5kw inverter as I very seldom go over 5kw. However there could be an instance, for example, when I put the kettle on, and already have the washing machine and tumble dryer on, and wouldn't want the inverter to trip. Thanks alot!

Thanks all the response. Had the installer here on Friday to have a look. He reckons I could get away with 12 panels. My roof however faces north east. Will this be a problem? I would assume it would just mean that the panels aren't quite as efficient and will also start producing power a little earlier In the morning? Installer reckons to only have the dishwasher /washing machine on non essential. Says doesn't make sense to rewire the plugs just for the heaters. Also, what he says which I don't understand is that if I have say A 5kw inverter, then the max power I can use at a time is 5kw. My understand is that while the grid is up, it would just pull the additional from the grid without tripping the system. This is my understanding from some of the other threads on the forum, so now really confused.

Thanks for the reply @Craigm yes, My heaters do pull quote a bit in winter. House is pretty cold. My thinking is I will install the plugs for the heaters on the non-essential side, so if the grid fails then those heathers will be off, which is fine. Will also have the other high power devices (dishwasher and washing machine) on non essential so I wont run into that problem.