"Lurch" wrote in message
...
On Sun, 8 Aug 2004 19:57:22 +0100, "Smudger" smudger@here strung
together this:

The biggest electric shower you can get is 10.8kW, because 240 Volts x 45
Amps = 10,800 Watts, and a 45Amp fuse/MCB is the biggest size you would
put
in a domestic-type consumer unit.

Technically not, if the circuit current is 45A then you need a 50A
fuse/MCB.

Why so?

And the shower manufacturers didn't stop at 10.8KW just
because "45A is a fairly big CPD so we'll stop there"
--

SJW
A.C.S. Ltd