Hi Guys
Eskom has converted my house to a split prepaid meter recently with the actual meter being installed in a kiosk in the street and me receiving a keypad. It is one of the newer prepaid meters that use the power lines (PLC = Power Line Communication) to communicate between the keypad and the meter (Shenzhen Star Instruments G3-PLC). My problem is that my Sunsynk grid-tie inverter causes issues with the communication between the keypad and the meter. Turning off the MCB that connects the inverter to the DB board fixes the issue and then the keypad works from any socket. With the MCB on, none of the sockets allow the keypad to work. I even tried hooking up the keypad to the geyser and even to the live and neutral of the incoming mains. Nothing works with the inverter powered and connected. From what I understand, the EMI filtering in the inverter also filters out the communication of the G3-PLC protocol (15khz to 100khz signal)

What did work, was when I hooked up the keypad to a electrical kiosk about 50m away containing a breaker from my house using the common neutral and the Live feeding into the breaker for my house. So distance away from the inverter definitely plays a role.

So my question is now, if I were to add another plug socket tapped from the junction box on my garage wall where the mains enter the house just so that the keypad can communicate.... what would be the SANS compliant way to do it? A small DB with a 16A MCB and a dedicated (red) socket and a sticker saying "No Earth Leakage Protection"?. My issue is that this violates the rule that there should be one mains breaker that disconnects the entire installation.