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ring circuit (Read 2386 times)
watte
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ring circuit
Aug 8th, 2010, 11:38am
 
Hi,

Can anyone explain why the electical sockets in my front room do not seem to be on a ring circuit.  I replaced two sockets, and each socket contained only singles.  The house was built in the 1970's. I was under the inpression that the sockets were never radials, apart from individual circuits.  

thanks for any help on this subject. Smiley
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Lectrician
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Braunton, North Devon, United Kingdom
Braunton, North Devon
United Kingdom

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Trade: Electrician



Re: ring circuit
Reply #1 - Aug 8th, 2010, 11:57am
 
Sockets where originally wired as radials.

Just after the war there was a huge copper shortage.

The ring circuit was developed to allow smaller cables (less copper) to serve the same loads.

Radials are again becoming popular.

Your sockets are more than likely spurs from either other sockets or joint boxes.

There was a short period when it was popular to run a ring around for the first floor, dropping spurs down to the ground floor.
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Re: ring circuit
Reply #2 - Aug 9th, 2010, 10:21am
 
And yet rings actually use more copper in practice. Roll Eyes

Rings make almost no sense for the purpose they were originally developed for; to supply portable, high load appliances. Properly designed rings may, however, be suited to fixed loads, such as encountered in a kitchen, where the load distribution can more safely be assured.

The radial circuit has always been available to discerning and intelligent designers... just a shame that so many electricians believe, as you did until now, Watte, that sockets must be on rings.
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