Quote Originally Posted by Dave A View Post
One thing you haven't mentioned - Is this main earth point of the generator supply also connected to the earth system of the installation?
Yup. 25mm Single GRN/YEL run with the SWA cable back to the Generator backed up DB. Also Earth spike installed 2 x 2.5 meters(1 x 1 meter and 1 x 1.5 meter coupled together)