On Sun, 09 Jan 2005 17:26:46 +0000, Lurch
wrote:

On Sun, 09 Jan 2005 14:27:31 -0000, Ro
strung together this:

Is it normal for the fuse to have a lower rating than the circuit
breaker?
I would have thought that the circuit breaker would trip first, and that
the fuse was a final fail-safe.

Are you sure it's a MCB and not an RCD. If it's an RCD then the
current rating is a maximum working current. RCDs don't trip on
overcurrent, only earth faults.


It is an MCB. There's an RCD on it also.

I'm sure that the MCB is correct, since that's never been changed. What
I'm unsure of is whether the correct fuse is fitted, since I suspect that
it has been changed.

Is it normal for the fuse to have a lower rating than the MCB?

Ro