This discussion is locked.
You cannot post a reply to this discussion. If you have a question start a new discussion

Grid switch ratings enquiry

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
Parents

  • perspicacious:

    Historically when spurring off a ring final circuit, were you only allowed one double or if in different rooms, a single in each of those?


    Regards


    BOD




    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. 


    EDIT. P.S. The number of non fused spurs was limited to not be greater in number than the total number of sockets and items of stationary equipment on the ring.  The number of fused spurs was unlimited.


    Z.

Reply

  • perspicacious:

    Historically when spurring off a ring final circuit, were you only allowed one double or if in different rooms, a single in each of those?


    Regards


    BOD




    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. 


    EDIT. P.S. The number of non fused spurs was limited to not be greater in number than the total number of sockets and items of stationary equipment on the ring.  The number of fused spurs was unlimited.


    Z.

Children
No Data