Shower Circuit Guide app for iPhone and iPad

This app is a great source of on site guidance for the installation and maintenance of shower circuits.
It allows you to select the relevant shower Kw rating and then follows through to show acceptable cable sizes for the rating of the shower and then the correct MCB sizes for each acceptable installation reference method.
There is also comprehensive detail on each of the installation reference methods in the regulations.
It is to be used as a guide only and doesnt take into account volt drop or any other de-rating factors.
Always consult BS7671.