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The main reason the minimum overload protection to an instantaneous shower has to be between 30 to 40 amps is why?
In a 230 volt system such as in the UK and Europe, the average shower takes 35 to 40 amps. The protection should match the highest load anticipated.
edited by another person:
I have this same question on my Plumbing course and i believe i can help you.
I have put KW rating as i believe its connected to a previous question,
what is the fuse rating of a 9KW shower.
well 9000W divided by 230V = 39 amps, so a 40 or 45 amp fuse would be considered.
and then going back to this question, why is overload protection required to be between 30 and 40, because of its KW rating.
Would that help you?
What else can I help you with?
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