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situ is a park homes prefab for sale. i have been tasked with doing an EICR. wylex 3036 board with a later added 30mA up front RCD. Ze = 0.3. Zs readings at cooker outlet 0.32. lights 0.47. RFC sockets all read between 687 and 720 ohms. cpcs are intact and connections checked. tested the Zs on both sides of the RCD to eliminate bogus readings there. 1553 aborted RCD test showing >50V. obvious conclusion is a floating earth, but no visible signs of a fault. going back tomorrow with wander lead to check some R2 readings. just to eliminate test faults, got home and plugged 1553 into a socket. 0.47 ohms on hi current. 0.47 ohms on no trip. any ideas?