On 27/05/15 10:53, Dave Plowman (News) wrote:
In article ,
charles wrote:
In article . com,
dennis@home wrote:
On 26/05/2015 23:05, wrote:


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

A ring has more connections so a bad one is more likely.
The effects are different.

and if there is a break in a radial circuit it is very obvious. Not so
in a ring.

A break in the earth circuit in a radial is going to be obvious? Maybe
only when it kills you.

Rings were good before RCDs because fundamentally most
faults-live-to-case - and we had metal cases then - gave a blown fuse.

RCDS will trip on faults to earth no matter how generated: there is less
requirement for a absolutely guqaranteed earth


The ECC is the thinnest wire so most likely to break.

Questionable logic. Which breaks more easily? - a human hair or a matchstick

With a ring there
are two. Unlike a radial.

Finally, a Fact.




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