FFS now what

[Steve]

They are for preventing death or injury

How do they do that?

By cutting the voltage feeding the equipment, its a very simple idea.

 

[holmslaw]

..

 

[1john]

Why is everyone so keen on having switches anyway?

I'm still trying to figure out why instantaneous electric showers are so popular in the first place. If for a retrofit application where only a cold feed is easily available I can see the attraction, but when building or refurbishing a bathroom from scratch, I can't see why anyone would want to use one in preference to plumbing in a good mixer shower from the main hot-water system.

And from the electrical and wiring regs. point of view, I find it incredible that some of the people who can get rather bent out of shape over a socket in a bathroom, or the precise location or need for a shower isolator, don't bat an eyelid at putting 240V actually inside the shower cubicle behind just a flimsy plastic cover.

I suppose the biggest bonus to an electric shower, apart from the fact that it provides an 'in cubicle' shelf for your soap is that they still work when your boiler packs up and the gas man cant get a PCB for 3 days.