Electricity is supplied at 240v and ½ the amps here. This means that heavy-draw appliances like vacuum cleaners will be sporting a wire that is so thin it looks like it should be hooked up to a telephone. That at least makes sense; abandon hope if you're trying to understand the logic behind house wiring.
It is illegal in the entire UK to have a light switch or electrical outlet inside of a bathroom (with the exception of a special low-amp plug for electric razors). The switch must actually be near the bathroom door but outside of the bathroom. The only exception to this that you're allowed to have a cotton pull string attached to a ceiling switch inside the bathroom, so that there's no chance of creating a short while standing in some water.
From this, you might conclude that electrical standards are really strict, but you'd be wrong. Outside of commercial buildings, conduit is never used-- simple vinyl-clad cable runs through walls all over the country, supplying power to outlets and wall switches. So apparently it's OK to die by drilling into a wall and through a live wire, but not to shake off this mortal coil in the can; I guess they just don't want people hogging the bathroom. And don't get me started about the breaker box; no, just don't go there.
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