Hi Robert. To be honest, I’m probably getting the terminology wrong!
The system was installed last year, and I’m just getting to a stage were I’m trying to monitor it using the EmonTX. I attached the CT clamp of the EmonTX (and owl monitor) to the cable coming out of the inverter, and it just reads zero no matter what is being generated. It sounds like putting the wiring through a box and removing the protection layer, and clamping just the one of the wires may be required. I’m not sure there is room in the consumer unit, I’m not an electrician so i’m either gonna need help or make sure it’s very easy!