dave_jones
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i have just installed a split load consumer unit with rcd i have put all the lighting and smoke alarm on the non RCD side and the ring main's and shower on the RCD side of the board , i have not yet put in the ceiling roses and shower unit , though all the cable is there ready to do so , every time i power up the consumer unit (with no cicuits on) the RCD trips immediatley, i do not understand why as im sure all the wiring is correct , i also do not understand why it is tripping with nothing powered up, i know i have a protective mutiple earth (PME) can this cause this to happen or could it just be a faulty RCD
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