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Grid switch ratings enquiry

Farmboy
Had an interesting chat with a tech dept this afternoon after coming across some grid switches in a domestic kitchen.


Four grid switches (sharing a common backbox) are each fed via their own 16A cb's, and each feeds 1G sockets (for a cooker hood, fridge freezer, etc). Ignoring the cable sizes (the focus being on the grid switches), given the 13A plug fuses limits the loads in each cct, would you have the current rating of the grid switches equal to or higher than the 16A cb's (e.g. 20A), or lower (but equal to or higher than the socket rating e.g. 13A/14A)?


F
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    perspicacious:
    Historically such as in the 15th edition of 1987 a non fused spur could only supply one single or one twin (double) socket outlet from a ring.


    My history goes back further as A.40 in the 14th (1966 through to 1976) states: "Not more than two socket-outlets, or one twin socket-outlet, or one stationary appliance, shall be fed from each non-fused spur."


     

    Whilst the wording of the 13th 114 (B) (ii) is similar, it doesn't define socket-outlets as being single or twin though


    Regards


    BOD




    Reply>>>>>>>>>>>>>>>>>

    14th Edition Reg. A.31.


    "Each socket-outlet of a twin or multiple socket-outlet shall be counted as one socket-outlet for purposes of Reg. A.30 and Table A.3M." A.40 refers to socket outlets, so 2 single sockets are 2, and one twin socket outlet is 2 sockets also.


    Z.

Reply
  • 0

    perspicacious:
    Historically such as in the 15th edition of 1987 a non fused spur could only supply one single or one twin (double) socket outlet from a ring.


    My history goes back further as A.40 in the 14th (1966 through to 1976) states: "Not more than two socket-outlets, or one twin socket-outlet, or one stationary appliance, shall be fed from each non-fused spur."


     

    Whilst the wording of the 13th 114 (B) (ii) is similar, it doesn't define socket-outlets as being single or twin though


    Regards


    BOD




    Reply>>>>>>>>>>>>>>>>>

    14th Edition Reg. A.31.


    "Each socket-outlet of a twin or multiple socket-outlet shall be counted as one socket-outlet for purposes of Reg. A.30 and Table A.3M." A.40 refers to socket outlets, so 2 single sockets are 2, and one twin socket outlet is 2 sockets also.


    Z.

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