Good day all
I have a house on a farm that consists of 4 shipping containers that needs a COC.
The power supply is from a PV system and the neutral and earth is bonded on the inverter side. There is no Escom feed to the house. The four containers are earthed to each other and the DB with 16mm sq bare copper. The house have no earth to the ground at the moment, we plan on connecting two earth mats to the building, on opposite corners of the house

My problem is the earth leakage that only trips on 30mA when testing the electricity. :-(
Any suggestions on how to fix it or do I COC it like that?