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Ring Main addition- 20 or 30 amp junction boxes?

Discussion in 'Electrical Engineering' started by Blair, Dec 1, 2005.

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  1. Blair

    Blair Guest

    I am adding two extra double sockets to my kitchen ring main and I was
    proposing to fit two 20 amp junction boxes to enable me to add the extra
    A friend said I should fit 30 amp junction boxes instead of 20 amp
    Is this essential?
    So far I have not seen any 30amp boxes in B&Q or Wickes
  2. Blair pretended :
    20amp is not adequate, nor would they be well designed to accept the
    heavier cable. The 30amp ones have three terminals which are large
    enough for 2.5mm plus proper space to route the cables. If not
    available from B&Q etc., then try an electrical wholesaler - CEF, N&E
    or similar.
  3. Blair

    Blair Guest

    Thanks for your help. On my second visit to B & Q I found the 30amp boxes
    after a long search. They were partly hidden on the floor
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