Marius Fourie

Hi @randomwalsh
I've already posted the marking on the exterior box where the municipal breaker is. 
Here are the main DB and the AC sub DB for the PV system. 
For the sub DB there is one red label (point of generator connection) right under the 3 way switch  (1 = PV, 2 = off, 3 = bypass to grid). 
For the main DB there is the warning sign to the right, the red label under the main DB (point of of utility connection), and, shown separately, a third that has similar wording to the exterior marking. 
 

Hi All. I made this video.
Pierre, I take exception to your insinuation that I am punting Victron. Let me state for the record that I am in no way affiliated with Victron and I hardly know the local Victron guys. I only met one and I don't like him. I simply use it and I believe it is an excellent product.
The point is not if the King can find out what the state of charge is by asking the BMS, it is what it can do with the information, and the answer is nothing.
You need to watch the video a few times more, because you missed the point completely. Let's be clear, the Axpert cannot blend power linear between PV and Grid. It does not convert the grid to DC, convert the PV to a suitable DC level, add the two and invert the sum of the DC power to AC. That is expensive circuitry, and that is why the Axpert is so cheap, it simply switches via a relay. The point of the grid tied inverter is to blend the grid and PV power before it is fed to the Axpert. The disadvantage is that the PV switches off under islanding conditions.
Note that Voltronics, do not claim the Axpert to be a Hybrid Inverter. It's Hybrid inverters are the Infini series. They blend the power from the PV and grid.
If you don't get the difference in the Victron and Axpert functionality offered, its sad. There are so much that the Victron offers the user if you understand it. And yes, King will catch up but by that time Victron has gone much further ahead.

A very belated answer. BUT. The standard do not state that. Para 7.12 has many sub paragraphs and none of them state what the guys above says. I hate it if someone pretends to quote a paragraph and he obviously has not even read it. (YellowTapemeasure, where in 7.12 ???) I have just done an intensive study of 10142 specifically with this in mind. The deciding factor is that panels are double isolated devices, which means there are sufficient separation and makes that a useless exercise.