Scubadude

Powerline adapters are a waste of money.  Use that money to buy a networking toolkit and a roll of cable and make your own cable.  May work out cheaper than powerline and guaranteed to work much better.

^^^ What he said

Easy ... install it any way around - if it shows nagative grid power invert the leads om the inverter. Job done.

I never played around with the AUX out on my 8kW Deye, but from what I read here and elsewhere it is a real b!tch to get to work properly.  My standard advise these days would be to put just about everything on essential, then manange actual use with discipline or timers, and keeping the AUX available for when we all inevitably wire in generators in future.
Another option is to wire the geyser as non-essential but after the CT coil - this way you get the same result as using the AUX port, i.e. use solar to power the geyser when sunshine and battery SOC allows.

Family of 6 .. we are about 75% down since we went solar. About half the savings came from a 300L EVT geyser, the rest from a 6.37kWp/10kWh/8kVA system. This could be better if:
We had less loadshedding - at higher stages I go conservative and run down my batteries to 60% overnight (20% when there is no loadshedding) I had a higher panel pitch - 12 degrees not enough, especially in winter My family adjusted their lifestyle and habits (as they said they would but didn't)  

^^^ What he said

Family of 6 .. we are about 75% down since we went solar. About half the savings came from a 300L EVT geyser, the rest from a 6.37kWp/10kWh/8kVA system. This could be better if:
We had less loadshedding - at higher stages I go conservative and run down my batteries to 60% overnight (20% when there is no loadshedding) I had a higher panel pitch - 12 degrees not enough, especially in winter My family adjusted their lifestyle and habits (as they said they would but didn't)  

I have a contrarian viewpoint ... It would be a terrible waste to have 8kW available from the roof on a sweltering Paarl summer's day (I know - I grew up there!) but the batteries are fully charged so output is choked to zero. What would it be worth to be able to run your a/c for free then? I say put everything on essential but be aware of what you use when, and automate some things (geysers) with timers.  My brother-in-law in Courtrai did an install in January and from what I heard they are happy (they also put everything on essential on my suggestion). I can ask who they used.

I'm also of the opinion that for most ZA houses 8kw is the right size inverter. With that put everything on essential. Larger items like geysers can be timed. Aircons are not THAT bad if they are inverter tech

Family of 6 .. we are about 75% down since we went solar. About half the savings came from a 300L EVT geyser, the rest from a 6.37kWp/10kWh/8kVA system. This could be better if:
We had less loadshedding - at higher stages I go conservative and run down my batteries to 60% overnight (20% when there is no loadshedding) I had a higher panel pitch - 12 degrees not enough, especially in winter My family adjusted their lifestyle and habits (as they said they would but didn't)  

I had this on my Deye ... whenever the power came back it tripped. It was supposedly a bad (read badly installed) changeover switch which made voltage spike to 500V. In the end, the switchover *and* inverter were replaced. This and multiple other stuff ups put the man out of business.  

I had this on my Deye ... whenever the power came back it tripped. It was supposedly a bad (read badly installed) changeover switch which made voltage spike to 500V. In the end, the switchover *and* inverter were replaced. This and multiple other stuff ups put the man out of business.  

For your use case as just a water backup system, a standard DOL pump may work. You will have to carefully manage your loads during loadshedding to be sure not to trip the inverter though.
I went with the bigger Esybox VSD and I'm very glad I did for my offgrid water solution. You would not believe how many times the pump turns on per day, it must be hundreds. So its useful that its just 150W-500W at a time in most cases. Only if a few taps go on at a time will it get closer to full power.
So you would need to consider that there will be a full spike in power every single time someone fills a glass of water or washes their hands when getting the DOL pump. 

On my 11KW Inverter with 3 x 5.5 AM2 which is slightly bigger than your system I can run 2 well point pumps at around 0.8KW each and one Booster Pump @ 1.5KW and everything else in the house. Bascially, all excluding the Geyser, Stove, Tumble Dryer and Jacuzzi., Pumps are for the extended garden. 
No solar as yet.

This arrangement can run for 2 hours easily, if it's a 4-hour load shed, then I try not to use any of the pumps, just the house, plugs, kettle, washing machine and lights etc, otherwise it flattens the batteries to 20% and below. 

I'm using a 0.37kW pump for backup, but flow rate after filters and pipe friction isn't great. Wouldn't recommend for it multi-storey homes, larger homes, or for running more than one or maybe two taps at a time.
Looking at the VSD type, if it's really just for home and for backup, the performance difference between the 0.75kW VSD and the 1.5kW VSD I don't think is worth the difference in price. It jumps from R7000 to R12000 for maybe a 10% improvement in performance in terms of flow rate and pressure.
Otherwise maybe consider if a combination of DOL pump and pressure tank will resolve the issue of constant switching on and off, at maybe half the price of the 1.5kW VSD.

I'm no home automation fundi but I got fed-up of my failing pool timer running down my batteries when not expected, so I replaced it with a CBI Astute ASC. Installation was quick and easy even for my non-electrical brain and setup surprisingly straight forward. In addition to the ability to set up timed operating slots, I also like the manual override for when I do the weekly filter service, and the count down timer for the same reason. That and the ability to remotely turning off when we have 8/8ths cloud cover and loadshedding between the 1 and 2 pm running time. BW price is R 459 until Monday 20 March. Well worth it I think.  

I'm no home automation fundi but I got fed-up of my failing pool timer running down my batteries when not expected, so I replaced it with a CBI Astute ASC. Installation was quick and easy even for my non-electrical brain and setup surprisingly straight forward. In addition to the ability to set up timed operating slots, I also like the manual override for when I do the weekly filter service, and the count down timer for the same reason. That and the ability to remotely turning off when we have 8/8ths cloud cover and loadshedding between the 1 and 2 pm running time. BW price is R 459 until Monday 20 March. Well worth it I think.  

I'm no home automation fundi but I got fed-up of my failing pool timer running down my batteries when not expected, so I replaced it with a CBI Astute ASC. Installation was quick and easy even for my non-electrical brain and setup surprisingly straight forward. In addition to the ability to set up timed operating slots, I also like the manual override for when I do the weekly filter service, and the count down timer for the same reason. That and the ability to remotely turning off when we have 8/8ths cloud cover and loadshedding between the 1 and 2 pm running time. BW price is R 459 until Monday 20 March. Well worth it I think.  

Just a general observation: Get the sacrificial anodes in the geysers changed every couple of years, or least check them annually. You can significantly prolong the life of your geyser this way. 

Had the exact same problem last year. With mine I had the earth leakage tripping all of a sudden and when testing each circuit on the DB board I found the culprit. The water was dripping onto the 230V connection.
Replaced the gasket and the element as well as the old element was pretty corroded already. This geyser was installed in 2013 and I am thankful it was only the gasket. I had this geyser retrofitted with a solar flat panel conversion 5 years ago before I even considered full solar PV. Served me well except the 12V circulation pump that I had to replace 2 weeks ago. They aren't cheap.
But your thinking is correct. I myself am considering a EVT geyser that would then feed this geyser. Financially I haven't been able to justify it though as my PV suffices to run the 3kW element and I always have hot water. The only reason I would want to do it is to have more volume of hot water as the 150l is rather limited for a household with 4. 

I think the government is trying to get all of those who have solar in their data base, then it will be easy for them to do whatever they want.
Think careful before you involve your system with the government, just my 2cent thought 😃

Not much of an incentive. Saving income tax portion of 25% on panel purchase price only. The government is even more broke(-n) than I thought.

Section 12B has been in force for years. Full depreciation in year 1. Not a subsidy but there is some cash flow advantage from the expedited depreciation.
Edit: I see the deduction for businesses is now 125% for renewable projects from 1 Mar 2023 to 28 Feb 2025. And not just panels  OK that is something.

Not much of an incentive. Saving income tax portion of 25% on panel purchase price only. The government is even more broke(-n) than I thought.

Not much of an incentive. Saving income tax portion of 25% on panel purchase price only. The government is even more broke(-n) than I thought.