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    17th edition Certs Compilation

    Can anyone please tell me what the tick box ("For one item of current using equipment" under the heading of "Electrical Separation" on the SCHEDULE OF ITEMS INSPECTED on the new 17th ed DEI Certificate) means? or where I could find out without having to buy a book!
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    RCD on a TT System

    Can anyone tell me the in regs wether or not a on a TT system with a 10mm main Earth (not buried) to the rod and consumer unit with a split load, if you need or when you need an overall protection of an RCD, or is the 30mA RCD on the sockets enough. I dont know, but could find out the Ze if...
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    Maximum earth fault loop impedance for a BS1362 fuse

    Could someone please tell me the maximum earth fault loop impedance for a BS1362 3A fuse or where I can find the info. I need both 5sec and 0.4 sec disconnection times. The 13A spec is in the regs but not the 3A.
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