So work out a cable run from your consumer unit to the shower, hopefully youve have a spare socket in your consumer Unit for a hefty 32 amp (or even higher) trip or fuse. Your shower will tell you what size fuse to use - only the very low KW ones need a 32 amp fuse. Then you can trial your 15mm wire to the shower - remembering to put cable clips to keep things neat and tidy. Loose laid wire or twisted wire does not have the same effieciency as wire running striaght.
A good point, although I reckon maybe they should introduce a reg as many people I know in rented houses have a problem as they are 6 foot+ and whoever installed the shower must have been about 5 foot minus. 1200mm light switches? Only if showers must reach at least 6'6 above the bath.
This guy certainly needs a spellchecker. Some of what he says might be useful but unfortunately the area with most danger is the one he gets completely wrong. I.e. the 32A mcb (I wouldnt' want to own a 7kW shower!) and the 15mm cable (maybe he believes in over-engineering!)
I am awaiting his next article "naked flame mains gas maintenance for beginners"...
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