7 Jun
2010
7 Jun
'10
1:01 p.m.
Tony Duell [ard at p850ug1.demon.co.uk] wrote:
Indeed, I've rewired those many times. Still have plenty of fuse wire too...
Some consumer units (the main fusebox next to the
electricity
meter) do
use catridge fuses, and in that case, they are of different
sizes so you
can't put a 30A funs in a 5a holder (actually, I think the 15A and20A
cartridges are the same size, but putting a 20A fuse in a 15A circuit
is not _that_ dangerous).
Even older consumer units (like the one in my parent's house) has
rewirable fuses. If the fuse blows, you pull the holder, replace
the wire (perhaps even look for the fault :-)) and away you go. I don't remember anything there to stop you
putting 30A wire in the
5A lighting circuit (except maybe the 30yr old faded warning text).
The fuse carriers are of different sizes (or at least haev different size
pins) so you can't swap them round. But of course nothing stops you put
the wrong wire in. Just as nothing stops you using a piece of 16mm^2
copper wire. Sometimes people have ot be careful...
-tony