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Bob Eager
 
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Default Wiring Ring mains to MCBs in consumer units

On Fri, 28 May 2004 14:48:24 UTC, "RichardS" noaccess@invalid wrote:

does this mean that the circuits are effectively protected at (a chilling)
64A at the moment, or is the effect not quite that simple and liable to be
indeterminate?


No, they're protected at 32A. Which is fine, as that is well within the
rating of the ring as a whole.

But, think what happens if ONE of those breakers trips. You are left
with what is effectively a radial circuit, protected at 32A by the
remaining breaker. But with a single cable feeding each outlet, the
cable (if 2.5mmT+E) rated at as little as 20A.

--
Bob Eager
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