emersion heater to shower

[dynachic]

Hi there
I am wanting to install a shower but dont have any electrics in the loft, i have been quoted £600 to put in the electircs and get a shower installed. ~Howere, i was wondering, I am blonde , so brace yourself as this may be a ridiculous scenario but here it is.... in the loft there is a tank with an emersion heater can this be disabled and the electrics that are used for the emersion heater be used for the shower? hence no need to feed a new electirc cable through my house to the loft?

 

[Spark123]

I take it you mean an instantaneously heated electric shower? If so then no you can't, the cable for the immersion is usually suitable for an approx 20A max supply and en electric shower requires 32 - 45 A.

 

[seasickstevie]

Alternatively, if you want a power shower fed from your gravity system, you could use the existing/former immersion heater supply (done correctly via a FCU & on an RCD etc.).

But you would be depending on your boiler (if you have one) and wouldn't be able to rely on the immersion as a back-up.

 

[kai]

Depending on the power rating of the pumped shower (<=3amps) and the Immersion (<=13amps), you could safely run Both off the circuit if it is wired in 2.5mm cable of a B16 breaker. Check that is the case, and if so, you can have the best of both worlds, Fit a 3amp DP switched FCU beside the immersion one, and run the pumped shower off that (<=3amps).

 

[londonboy]

immersion must be a dedicated radial

 

[ban-all-sheds]

And the actual regulation which says that a properly designed circuit cannot be used is......?

 

[sparkyspike]

Do you know whether you need an instantaneous (fully electric) shower, or a boiler fed shower? This will determine whether you need to run a new cable to the loft. (Is the new shower in the loft?)

A boiler fed shower will possibly just need the cable you have for the immersion heater to run the pump. You can take the hot water from the immersion cylinder and the cold from the cistern.

 

[ColJack]

And the actual regulation which says that a properly designed circuit cannot be used is......?

you'll have to be more specific as to which reply you were commenting on BAS..

 

[ban-all-sheds]

In the absence of a quote, the one immediately before.