On Tuesday, 26 May 2015 21:11:05 UTC+1, ARW wrote:
nt wrote in message
...
On Tuesday, 26 May 2015 15:33:23 UTC+1, GB wrote:
On 26/05/2015 15:20, Dave Plowman (News) wrote:
In article ,
charles wrote:
Because it works better.

Not really, but it saved copper in the 1950s,

It does do that. But actually makes more efficient use of materials. It
gives more consistent results over the entire circuit which a radial
can't
achieve.


If there is a break in the circuit, all the sockets may still work. The
circuit breaker won't trip. Yet one arm of the ring is taking all the
load that's meant to be divided between the two. Isn't that going to
lead to overheating?

Not to enough extent to be a risk. A ring circuit with a partial break is
many times more dangerous.


As BS 7671 does not mention partial breaks then please enlighten me.

bad connection. Radials suffer much worse from them than rings.


NT