Advice on some electrical wiring.....

Advice on some electrical wiring.....

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Discussion

DanoS4

Original Poster:

868 posts

194 months

Saturday 25th February 2017
quotequote all
CAVEAT - PART P and safety will be observed, but my curiosity is getting the better of me and I want to *KNOW* how to do it. A professional will actually do it.

There. Got that out of the way.

Got a question about about switched fused spurs.
Say I've got an existing ring main and I want to add a switched spur to the ring. From this spur I can then feed one more socket. I'm struggling to get my head around the maintaining of the ring. My brain seems to think that by putting the spur in line with the ring wiring, I'll just be adding a switch to break the circuit. Not what is required biggrin
Here's a current demo -



The reason is so that the switched spur can be on "view" above a counter, but the socket under the counter can be utilised for a washing machine .

Anybody care to point me to a link that shows me the wiring from the rear of the spur's perspective? I've got a drawn circuit diagram, but it's the putting into practice that seems to be getting away from me.

I must stress that this is for my curiosity only as we've got contractors in doing our kitchen, but not at the weekend, and I've got time to kill trying to understand it before I watch the rugby! biggrin

Thanks in advance,

DAn

Smiler.

11,752 posts

230 months

Saturday 25th February 2017
quotequote all


There will be terminals marked "Supply" & "Load" on the fused connection unit.

The ring is wired into the supply terminals (2 cables per terminal) & the wiring to the load is a single core per terminal.

The socket fed via the fused conn unit will be protected by a 13A (max) fuse so be careful what load is connected (if more than one appliance).



jason61c

5,978 posts

174 months

Saturday 25th February 2017
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you could do that yourself.

megaphone

10,719 posts

251 months

Saturday 25th February 2017
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I would use a double pole 20A isolation switch above the counter and use a single 13a socket below, to plug the washing machine into.

hairyben

8,516 posts

183 months

Saturday 25th February 2017
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The switch is not breaking the ring, it's breaking the supply to the socket.

paulrockliffe

15,679 posts

227 months

Saturday 25th February 2017
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hairyben said:
The switch is not breaking the ring, it's breaking the supply to the socket.
Not only that, if you wired the ring across the switch both sides of the switch would be live and there'd be no point having the switch! All the switch would do is switch between having one ring circuit and two whatever circuits.

DanoS4

Original Poster:

868 posts

194 months

Saturday 25th February 2017
quotequote all
Thanks guys.

Clarity has been restored biggrin

Makes perfect sense.