Good day, I've been at a new PV installation. I had to do the electrical side and coc it.
I have questions, from an electrical point of view and my limited knowledge of solar systems, raised a red flag or two.
The system is a 12kw 3phase system with 15kw batteries and 12 panels east and 12 panels west.
The batteries don't have a fuse or a breaker and it don't need one since the batteries have built in breakers, according to the installer.
There is two strings coming in and only one string is connected to the spd in the combiner box.
There is no dc isolator or dc breaker in the combiner box only 2 fuses for the red strings, the black strings go to a neutral bar and can't be isolated.
Orange enclosures, with no inner door, had been used for the PV combiner box and the AC combiner box.
The AC combiner box have two 4 pole mains, I insisted on them, for Eskom incoming and Inverter Incoming and a 3phase change over.
It would have been nice to have a third 4 pole mains so that one can split Eskom incoming and the Inverter Outgoing but since nothing other than the Inverter is using Eskom it doesn't really matter.
Oops on the picture the bridges to the spd is not in but they had been done, just not on the picture
Any feedback would be welcome
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