Before someone asks why so much current to earth: blue N wires are connected to it too, so it’s the PEN pole of the mostly obsolete but still very common TN-C system. Such current to PE would instantly trip GFCI/RCD in a modern TN-C-S system, now it’s just overcurrent through some appliance or wiring gone short circuit and non-compliant breaker/fuse that failed to trip.
Before someone asks why so much current to earth: blue N wires are connected to it too, so it’s the PEN pole of the mostly obsolete but still very common TN-C system. Such current to PE would instantly trip GFCI/RCD in a modern TN-C-S system, now it’s just overcurrent through some appliance or wiring gone short circuit and non-compliant breaker/fuse that failed to trip.