Morning, so just finishing off the install to a shepard hut which is located in a field. The construction is steel chassis, plyboard floor, timber stud clad with corrugated sheets. The corrugated iron sheets which clad the unit are plastic coated and there is no continuity between each sheet when tested, and 4meg to the met. TT at supply and therefore TT at the hut. The chassis is earthed but the 'box' that will be used for accomodation is insulated from the main chassis as it is sat on wood. Im thinking that i should bond diasy chain style each corrugated sheet and connect back to MET. Im worried that someone touching the metalwork could provide the earth path in a fault. Its going to be a ballache to do and potentially look a little ugly. What test would you do to satisfy exactly what is needed / or not. Thanks for taking time to read.