You are wrong, P=V*I according to ohms law.
Therefore, I= P/V
Power remains constant @ 9.5 kW
Therfore
Amps = 43.2 @ 220 Volts
Amps = 41.3 @ 230 Volts
Amps = 39.6 @ 240 Volts
Amps = 38 @ 250 Volts
And just for the heck of it, Amps = 86.4 @ 110 Volts.

Do you see the reducing current with increasing voltage?
Why do you think power is transmitted at such high voltages?
Well the two main reasons a
High voltage, low current. Smaller cable size, cheaper. And secondly,
voltage drop over long distances.


"James Salisbury" wrote in message
...

"ripper" wrote in message
...
You are a little wrong here, the supply voltage is allowed to fluctuate
between +10% and -6%.
However, should your voltage be higher than the 230 Volts, the less
current
your load will draw.
This is a simple application of ohms law. The higher the voltage the
less
current the load will draw.
That aside, as I said earlier - your MCB is too small. 45 Amps is the
correct size for this shower.

???
Since when did a shower have negative resistance!!!!!!

Volts=AMPS*RESISTANCE

Power=Volts*amps

If the resistance remains approximatly constant such as in the case of a
shower if the voltage goes up the current goes up P=(V*V)/R

In the very very special case of a swich mode powersupply the output power
and the input power is aprox constant regardless of supply voltage so ONLY
in this special case the volts go up and the amps go down.