Bath tap mains fed or from tank

[PeteJones89]

Hi guys I'm wanting to install an electric shower in my new property what's the easiest way to check it bath tap is coming from mains ?
The mains stop tap is located near the toilet in the room underneath me, when I switch that off it shuts all cold water off for every tap in the house.

If I run hot water the tank starts refilling in the loft, but when I run the cold nothing happens, giving me reason to believe my colds should be mains fed .
Any help he appreciated

 

[PeteJones89]

Picture of the cylinder here

 

[gmartine]

You've answered you're own question, the cold water taps can only be mains fed if as you said you can turn them all off via the mains stopcock.

 

[Timmy D]

I’m assuming you’ve decided on an electric shower either because of unequal hot/cold pressure or low hot pressure (no pump).

If going ahead with electric, have you ensured you can get a suitably sized electric feed? Either 6mm/10mm depending on shower output. I’d always go 10mm though.

 

[PeteJones89]

I’m assuming you’ve decided on an electric shower either because of unequal hot/cold pressure or low hot pressure (no pump).

If going ahead with electric, have you ensured you can get a suitably sized electric feed? Either 6mm/10mm depending on shower output. I’d always go 10mm though.

Yes low hot water pressure I think.
I had a old thermo mixer bar hanging around so i connected it to the hot and cold feed after taking out bath and it just wouldn't have it, when I put it on cold it worked fine but soon as I switched to hot it just came out very very slowly.

Yes I can get a 10mm sized electric feed and the mains is what's feeding the cold to the bath tap.

So all should be fine for electric shower correct ?

 

[Ben-gee]

Or you could get a single impeller pump and pump the hot.
This will give you a much better shower and also be far cheaper to run.

 

[PeteJones89]

Or you could get a single impeller pump and pump the hot.
This will give you a much better shower and also be far cheaper to run.

Thanks for the advice Ben much appreciated, but I have decided on the electric shower now , the home won't be occupied regularly so it won't be used alot. Going off what I've said the electric shower will be fine won't it ?i

 

[Ben-gee]

Yes you’ll be fine; obviously a qualified electrician has to do the new circuit back to the board via a double pole isolation switch.

 

[Murdoch]

Yes you’ll be fine; obviously a qualified electrician has to do the new circuit back to the board via a double pole isolation switch.

which must be protected by a RCD

new circuit = part p too in england & wales