Bert sa

Hi Steve, thanks for the feedback. In hindsight I should have started a new topic about this. I had a look at this generator already before but what worried me is their own statement: This generator is not suitable for use as a backup to a solar inverter due to harmonic feedback. Learn More https://mzansipower.co.za/product/6-5kva-1-phase-diesel-generator-bp6500s/ If you go to the "learn more" you get an article from Bundupower explaining the problematic harmonics between the inverter and generator, especially Voltronic and clones thereof inverters, also a list of inverters known to work and not to work. But as you experienced the Kodak OG7.2 to work well my, Kodak OG10kw might/should also work? I send them an email to check this. We are still connected to the grid and used this grid for only 7kw in total the last 5 months but obviously this will increase during the rainy season, the grid is still by far the cheapest and convenient backup at the moment as we currently don't pay a connection fee , but if they come with a ridiculous connection fee of R900 a month as rumored for the couple of kw's we use then I want to go off grid and need a generator for back-up.

Hi Steve. I don't have a challenge yet because I didn't buy a generator yet, but it seems as if it is a challenge to get a Voltronic to accept the charge from a generator. So what generator did you connect and what inverter is used?

During your wife's cooking the usage (including 2kw of the pool pump) is about 11-13kw non-stop for over 2 hours, that is a hell of a lot of cooking. Does this sound right or is EVERITHING maybe somehow measured double?

Hi Kenneth. And this inverter generator is accepted? But your previous generator also worked, or did it give problems later on?

Hi Steve, really very neat indeed, my compliments. This might be off-topic but is any of your installations completely of grid without a grid connection at all, and if so, did you connect a generator for backup to a Kodak/axpert inverter?

Thanks Coulomb, the existing panels (north but slightly east facing) do have their own earth spike, end the additional panels (at the western facing side of the house) also get their own additional earth spike. somebody told me you can't earth to much.

Thanks Coulomb, I will be using Mono panels 9x540w so I am staying well below the 450v max of the inverter. And this earth from the panels I connect to these surge arrestors?

Hi Guys I want to upgrade from a MKSII with 1 PV array( that only had a DC isolator in the string, running now for 3 years beautifully) to a Kodak 10kw inverter with 2 PV arrays and I want to make sure that I connect the PV strings the right, legal and safe way. It is an off grid system and each PV panel/array is grounded with it's own spike as are the inverter/off grid DB box and Pylontechs. The Picture shows the connections of fuses and DC breaker and surge arrestor very clearly, to connect this 'box' the string connects to the fuses and the MPPT's connects to the DC breaker, but do I connect the Panels earth to this surge arrestor or one of the other earths? What confuses me is that the Inverters manual states very clearly that: To avoid any malfunction do not connect any PV modules with possible current leakage to the inverter. for example grounded PV modules will cause current leakage to the inverter, please be sure NO grounding (NO in capitals nogal).

Thanks Suly. By splitting my loads you mean: keeping two sepparate solar systems with each their own load? This would not very practical with the one DBboard we got, should split this also in two then.

We have an axpert MKSII inverter with 3xUS3000 batteries. We want to go completely off grid and upgrade to 2x7.2 kodak inverters with an extra 3x US3000C or 3x UP5000 batteries. To exclude the mentioned battery mixing problems is it possible to connect our 3x US3000 to the slave inverter and the new 3x UP5000 to the master inverter???

Hi 87 Dream I want to ask you something off this topic. We have a off grid solar system, 12x360 panels, 3x3.6 pilontech, mecer MKS2 5kw inverter with ICC monitorring, running very well for 2.5 years. We want to upgrade the inverter to a 8kw axpert max, for the extra peak and second MPPT You seem to me like a installer and maybe dealer, I am in Centurion, would it be possible to come and see you and discuss our options?

Thanks guys, so it would not be a problem adding those panels.

I have a Mecer 5kva MKSII inverter with 4.260kw Solar panels and 3x US3000 Pylontech batteries. My Panels are slightly east of North facing so it starts charging very well in the mornings but tapers of about 2 hours before sunset. I would like to put another 1.2kw of panels on our west facing roof to extend the useful day and also to help with the cloudy days. The Max solar input for this inverter is 4.5kw, what will happen if on a sunny day at noon the combined panels deliver more than this 4.5kw? does the inverter trip or does it just take 4.5kw and the rest is lost?

Thanks Coulomb.

I have a Mecer MKS II 5KVA inverter with 12x355w pv panels facing north connected in 2 strings to a combiner. The pv input limit for the inverter is 4.5kw witch if fine for us on sunny days, on cloudy days we can use a bit more than this so I think about a couple of extra string pv panels on a west facing 30deg roof so it also lengthens the day a bit. My question is: what does the inverter do when the pv input exeeds the 4.5kw, will it just take 4.5kw and the rest is wasted, or will it disconnect the pv panels, or will it trip/switch off?