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BigWallop
 
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Default Double Pole switches and FCUs for kitchen applicances


"N. Thornton" wrote in message
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"BigWallop" wrote in message

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"N. Thornton" wrote in message
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"BigWallop" wrote in message

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"William Joones" wrote in message
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As part of renovating my kitchen, I intend to have 2 applicances
(washing machine and dishwasher) plugged in to separate single
unswitched sockets under the work surface, with those sockets
controlled by switches on the wall above the work surface.

The switches will be on a 30amp ring circuit with a spur running

to
below the work surface.

Looking at various old posts in google, people have recommended

using
Double Pole Switches or FCUs for this task.



Hi. Why would you need to us either a DP switch or a fuse to connect a
socket to a ring? A double socket would need IIRC a 20A switch, and a
single one... presumably 13A one. (Not certain bout those figures, but
think so)



A 20 amp DP switch is needed because the socket is unswitched and takes

a 13
amp load, but you don't get 13 amp DP switches off the shelf. A double
socket take two 13 amp loads so would need one 30 amp DP Switch to

control
it remotely.



Hi. ISTR being told a 20A rating was sufficient for feeding one double
socket, since regs take into account a limited amount of diversity.
6kW draw is not expected often IOW. Is that not so?

Why DP?


Regards, NT


Would you work on a remote unswitched socket if it still had a neutral
attached ? I wouldn't. That's why we use Double Pole switches to isolate
the socket from both live and neutral supply.

If you want to run a double gang socket, then you have to take into
consideration that both sockets will be used at the same time, so you need
the correct switch gear to control it. Diversity is only considered in the
whole installation, where there is an unlikely event that all appliances and
every socket will be on and used at the one time.


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