On Wed, 1 Sep 2010 13:28:47 -0700 (PDT), "alexander.keys1"
wrote:


Ring circuits and fused plugs were introduced in the UK to save copper
etc. in the post-WW2 rebuilding programme, they have a number of
disadvantages.

Probably the biggest disadvantage of early ring circuits was that a
lot of leccies didn't really understand them, and took each end of the
ring to a separate fuse. If one fuse blew for any reason the whole
(non) ring was then fed from one fuse, albeit probably only 15A
(unless they'd doubled the 15A fuse wire in the carrier).

--
Frank Erskine