Pastor

Hi everyone, I have installed a Mecer 5kw inverter and 6PV panels. Sytem perform perfectly until I grounded the pv panels. I then got a fault code "12" leakage current exceeds the allowable range. I have a 10mm² copper earth cable from rails and panels 8m long. There was no shock or fault with this cable on, but because of the risk of theft I decided to install the 4 earth rods at the back of the yard and had to extend the cable. I only had DC (to use for the interim 750km away from nearest hardware shop)cable and noticed as soon as I joined this cable to the copper I got a shock and the fault. My thought is this, because of the different metals in the two cables and the existence of leakage current on the Axpert brand inverters, this might cause an amplification in the leakage current range? As soon as I removed the DC cable, all was back to normal. In 2days time I will have the copper cable to extend and will post the result of that.