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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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    gkenyon:






    So "it would be reasonable to interpret" is in my opinion an assumption at best.


     




     




    Which is the point I was making.. ie WITHOUT FURTHER INFORMATION it is quite likely that the data sheet could be interpreted that way. Hence adding to the confusion, as I said.


    I do hope you didn't assume I was disagreeing with anything you said ?


     




    There are some truths that need to be considered though, as people are saying:


    (a) Most double socket-outlets would be unlikely to experience 2 x full 13 A loads.


    (b) Most users would be unlikely to know or care that the double socket-outlet was only rated 13 A total.


    (c) An electrician fitting a double socket-outlet can clearly see the marked rating, so they should not install double socket-outlets where two heavy current-using appliances might be plugged into the same double socket-outlet - specifically, I'm talking about laundry, dishwashing, and cooking appliances like ovens that might be used for extended periods, supplied with a plug, rated around or over 2 kW.

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  • 0

    -2400-:




    gkenyon:






    So "it would be reasonable to interpret" is in my opinion an assumption at best.


     




     




    Which is the point I was making.. ie WITHOUT FURTHER INFORMATION it is quite likely that the data sheet could be interpreted that way. Hence adding to the confusion, as I said.


    I do hope you didn't assume I was disagreeing with anything you said ?


     




    There are some truths that need to be considered though, as people are saying:


    (a) Most double socket-outlets would be unlikely to experience 2 x full 13 A loads.


    (b) Most users would be unlikely to know or care that the double socket-outlet was only rated 13 A total.


    (c) An electrician fitting a double socket-outlet can clearly see the marked rating, so they should not install double socket-outlets where two heavy current-using appliances might be plugged into the same double socket-outlet - specifically, I'm talking about laundry, dishwashing, and cooking appliances like ovens that might be used for extended periods, supplied with a plug, rated around or over 2 kW.

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