Pat de Klerk

Thanks guys....I have my answer then. Stick with what I've got in terms of PV......or worst case, invest in a completely new, higher rated system, if the stuff really hits the fan in SA !!!

Hi Scorp, Thanks. Currently still using lead acid (4 x 100Ah = 24V @ 200Ah).

Finally deciding to add additional PV panels to my Axpert Inverter, led to the specification that my 3kVa Inverter has a maximum PV input of 600W. I already have two 300W panels, but on a not so clear day, I'm only sucking in around 350W. Can anyone tell me if exceeding the PV input will do any damage ? ....and is anything more than 600W going to be any worth at all ? Would the system accept anything above the rating anyway ? Yes, with the way things are going, maybe investing in later technology, bigger systems would be the proper answer - but let's see what I can can squeeze for now !

Many thanks for the info ! Will certainly explore this route. Just a question regarding the BMS - does the Axpert have communication capability for this. If so, how to connect (I have no documentation for the Axpert inverter I have !)

I wish to install a Lithium battery on my Axpert 3kVA - 24V inverter system. Firstly, can this inverter be configured to charge lithium properly/safely ? Secondly, any recommendations for this Lithium battery - size, make, supplier in SA etc ? The system has been operating very successfully with two 12volt flooded lead acid batteries (100Ah) in series for about 10 years, with battery replacement every 3 years or so. However, with the current load shedding schedules, I'm deep cycling up to three times a day ! The batteries are not going to last long at this rate. May as well look for something more robust !

Thank you all for the advice given. I'll make some measurements and correct what is necessary. However, it seems that I did not need to 'float' the neutral out of the inverter in the first place (trying to be too smart as usual !!!)

I have connected my Axpert Inverter output to a 'floating' neutral in my home wiring. In other words, I've separated all the loads that run off the inverter onto a totally isolated neutral and the live inverter output is wired to those selected loads (through circuit breakers in batches). Three questions: 1. Is this legal wiring practice 2. Should I be connecting this floating neutral to earth at some point 3. Did I need to run a separate (floating) neutral in the first place ? I viewed the inverter as having total electrical isolation between the input ac and the output ac !