Pumba

If one has a solar system then this is no problem at all🤣

Rainy overcast days are a killer for solar generation. In Cape Town during winter months I can be using 50% from the grid, in the summer then there are many months with zero grid off take and that is with a 5kW inverter, 10 kW batteries and 6400 watts of east west panels. Two geysers have solar panels which work well except when overcast and rainy. What load shedding🤣 Edit: Forgot to mention, also have a 5kW diesel generator - just in case

In Cape Town (municipality) if you have PV panels on your roof then you need to be registered, simple as that; this rule has been in place for many years. If you want to be "Off Grid" then they certainly will come and disconnect your incoming grid line🤣 Get registered with the correct solar equipment in place then no problems.

Resistive load so when voltage drops the amps increase therefore better to have higher voltages in the order of 230 to 240 to keep the wires cooler at lower amps on high consumption appliances.

Just do not allow the batteries to reach the shut down stage. Monitor the battery SOC during load shedding to prevent potential permanent damage to those expensive batteries.

No sun no pv power; there is nothing one can do about that. The only disadvantage of living in Cape Time during winter😜

Think of all the additional income the ANC government is making from taxes on solar equipment and installations, diesel and petrol for generators etc etc - this whole thing is one massive scam🤣

If your solar system is not registered with your local power supplier they have every right to disconnect you if you are not using grid pre or post paid electricity.

That 8 kw Sunsynk needs 9 of those panel on one MPPT to give reasonable PV power. I have 8 of those panels on a 5 kW Sunsynk on one MPPT (east facing)

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I blame the end user, that's what you get when you look for the cheapest fly by night quote. And the OP paid R750 000 - just wow. I would agree with the City of Cape Town Rules and Regs - they are excellent.

A"bend" cable is actually a "burnt" cable🤣

You need to report the grid high voltage to your utility, 275V is far too high.

My 5 kW Sunsynk is set for Zero feed in and one can see it it take a few watts in and feeds a few watts out every now and then. This is the Cape Town meter which the City installed free of charge for zero grid feed in. During summer I am using about 6 units a month.

Installed 6 what?

In CT over a year you have to be a net user of the municipal kWhrs so I see no point in exporting to the grid.

Using a Sunsynk you don't have to worry about all these other overloading and mixing parameters etc 😀

You need more panels in series to increase your dc voltage. With a normal sunny day the voltage should not bounce around unless there are clouds overhead.

Instruction manual comes with the battery or you can down load it from the internet

As a side comment I note you have not ground your batteries and there is no coms cable to your inverter (no mention which type you have)

If using a CAN cable, that is

My 5kW Sunsynk is set to zero export and zero grid feed but the prepaid meter still shows 0.22 kwh usage a day. Looking at the Solarman graph I can see the odd export and import over a 24 hour period. Still I shouldn't complain with 6 units a month currently being used😃

Geysers are the biggest consumers of electrical power - just install solar panels (water type) for them

Wow, quite some damage there - hope no one was injured

I would go for the 3000C's - more redundancy. They are excellent batteries.