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Connecting up Sockets in either office or home

Former Community Member
Former Community Member
Hi All,

Was wondering best way to connect power to new set of 6 13A Double Sockets would it be best to use 63A RCD and 32A MCB with 2.5mm2 cable coming from MCB to the sockets I guess would you need 2 32A MCB's to have 3 sockets connected at any one time?.Then connect 16mm2 cable from the Main Power Source to the 63A RCD.The Power source consisting of 2x 4KVa Transformers and industrial sockets 110v,230v & 400v so Welders can work on the different floor levels (ie 2 Floors & Office on Ground).Also for lighting I assume its the same set up but with 6A MCB and 1.5mm2 Cable coming from the MCB.Jimmy
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    Normally we assume that 13A sockets  are not all fully loaded at once, and base the sums on floor area for general  use or known maximum demand if there are specific figures available.

    Office or home is not normally that heavily loaded, as you cannot cool a large area indoors that fast - say 32A for as many sockets as you like in 100 square metres. 4mm if radially wired 2.5mmsq if a ring.

    It is not clear where the welders and transformers fit in - are these normal 13 Amp sockets, or are they transformer isolated ? If the sockets are supplied by the transformers, then the upper limit is 4KVA for the whole lot then you can wire it all in 2.5mm and fuse at 16A.


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  • 0
    Normally we assume that 13A sockets  are not all fully loaded at once, and base the sums on floor area for general  use or known maximum demand if there are specific figures available.

    Office or home is not normally that heavily loaded, as you cannot cool a large area indoors that fast - say 32A for as many sockets as you like in 100 square metres. 4mm if radially wired 2.5mmsq if a ring.

    It is not clear where the welders and transformers fit in - are these normal 13 Amp sockets, or are they transformer isolated ? If the sockets are supplied by the transformers, then the upper limit is 4KVA for the whole lot then you can wire it all in 2.5mm and fuse at 16A.


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