NeilJ

May I ask how you figured out it was the inverter? I may be sitting with a similar issue, but with Hubble AM5's

We need to install the maximum number of panels on a Sunsynk 12kw 3P Inverter asap. We are using the JA545w solar panels, and urgently need to know how to best connect these for optimal PV production. Have searched around, it would seem the inverter can handle about 28 or so of these size panels, BUT, they also say the optimal / sweet spot for this, based on the voltage, is around 22 panels. Can anyone please confirm? I know this inverter has 2 MPPT's and an AUX that can act as a 3rd MPPT, but apparently there are some draw backs on using the AUX as a MPPT. See attached solar panel documentation. JA-Solar-525W-550W.pdf

Ok, so to keep things "simple" and in a safe range, the Canadian 605w will do the trick for this little inverter?

My apologies, that could have been me getting it the wrong way round. Either way, could he be right?

Thanks all, very interesting. If you go ahead, please send pics here. I was told by another electrician, not really a solar installer, that we could do 4 x 300w panels? 2 in series and another 2 in parallel? The ones in parallel will increase the voltage, and the ones in series will increase the amperage?

Hi all. Need help with panel sizing please. I have a 3kw / 3kva 24V Mecer inverter running with 2 x 100ah Gels. I know I can't add much, but would just like to cover the afternoons as much as possible, with general load at around 300 - 400w. See attached pics for inverter MPPT specs. Thank you.

I'm not sure if it works from the APP, but if you have an installer code via the website, then use the image below to set the fan speeds. It is found under the main heading of MAINTAIN. I think the first fan speed is the general speed of the fan for cooling / standard inverting, whilst the 2nd one is the speed under higher loads / inverting. Hope this helps!

Daisy chaining / Parallel of Shoto batteries. An electrician did an install of 4 x Shoto SD048100 Lithiums (as shown in the 2 pics, labelled with Master & Slaves). I am not a qualified electrician, but don't all parallel batteries groups work the same? Power will always take the shortest route possible, and if you look at the pics I've uploaded, he seems to be sending the positive and negative back to the battery disconnect in 2 separate chains (the 2 Shotos on the left (Master & Slave 1) opposed to the 2 Shotos on the right (Slave2 & Slave3). Shouldn't the daisy chain work all the way through? Shoto MASTER - positive port 2 to Shoto Slave 1, positive port 1; Shoto Slave 1 - positive port 2 to Shoto Slave 2, positive port 1; etc And vice versa: Shoto Master - negative port 1 to Shoto Slave 1, negative port 1; and so on. Then, take Master Shoto, Positive Port 1 to the battery disconnect / inverter; and Last Shoto in the group, Negative Port 2 to the battery disconnect / inverter. This will force the movement of energy to move between the entire group of connected batteries (as per last image)? As good link I found was this for Shotos: https://youtu.be/3gU6LR5F1TA Any feedback would be greatly appreciated, as I have found that there seems to be a definite issue with this wiring and does NOT seem to be incorporating all the batteries in the group.

Consolidating anything to do with Shoto batteries under 1 topic, for easy referencing / problem solving.

Here is a screenshot of my install: Parallel Lux's + 4 x Shoto 5.12kwh batteries. At the bottom it shows the batteries as 50ah and they are definately 100ah. Any suggestions?

So no need for SSEG for off-grid inverters?

Very nice install. Here is 1 of my recent, tight fit Lux installs... in a broom cupboard in the scullery. Got the client to knock out all his shelves and stuff to make space. 1 x Lux SNA5000 with Hubble AM-2 May I ask some questions please? 1) For some reason, my Lux installs are showing my 100ah batteries as 50ah (Shoto & Hubbles)... is there a setting or something on the Lux that we're missing? Cable maybe? 2) Did you adjust fan speeds for an inside install? Default is 70%... I turned down to 50%... and is pretty decent. 3) Being a solar installation, how have you gone about doing the SSEG? The Lux SNA5000 is an unregistered inverter, in City of Cape Town anyway, so it won't pass the SSEG application? Your feedback / guidance will help a lot.

That is strange indeed. As far as I know, the only thing that possibly determines that is the order they are switched on in. You're not removing or moving the dongles between inverters by any chance? I don't think that matters, but just asking.

I have exactly the same issue. 4 Shotos with 2 Lux SNA5000's. I actually updated the firmware yesterday from cbaa-121512 to cbaa-12767B in the hopes of fixing it. No such luck unfortunately. Spoke to the Lux rep in Cape Town, Andy... he says it's just an incorrect display issue? And I think he might be correct... I have other sites installed with the Lux SNA5000, but with Hubble AM-2's. Same issue.... 50ah. I have no idea? The common thread seems to be the inverters, not the batteries. I know this doesn't help, but hoping to see a resolution on here.

Hi Megesh. Out of interest, how did you proceed from here? I see no-one responded to your question. From my understanding, if you want a turn key solution, then yes, you would need to do the SSEG upfront and get a qualified person to draw up the plans, etc.