Shower Pump install

[shandy123]

Hi there,

I am a newbie to this forum, i am a fully qualified electrician and have recently passed my FICA 17th edition regs etc, (December 2014), however like many of us, i am still learning.

I'm after some advice regarding fitting a new shower pump.

A friend is replacing an electric shower with a mains systems. He wants the new pump to come on with the extractor fan and shower light. On the outside of the shower room i have a SFS protected with a 3amp fuse controlling a 13amp double socket in the loft. The shower light and extractor fan are both on plug tops hence the double skt.

I am planning on running a cable from this socket down into an adjacent cupboard where the pump will be sitting. I plan to go into another SFS fused down to 3amp then onto another skt which will provide power for the pump. The FLC of the pump is 2amps.

Is this a feasible option or if there is another, possibly better way on doing this. Feedback would be greatly received.

Thanks alot

 

[telectrix]

i'd be inclined to put them all on SFCUs. i don't like 1363 sockets on a lighting circuit.

 

[SheffSimon]

Hi there,

I am a newbie to this forum, i am a fully qualified electrician and have recently passed my FICA 17th edition regs etc, (December 2014), however like many of us, i am still learning.

I'm after some advice regarding fitting a new shower pump.

A friend is replacing an electric shower with a mains systems. He wants the new pump to come on with the extractor fan and shower light. On the outside of the shower room i have a SFS protected with a 3amp fuse controlling a 13amp double socket in the loft. The shower light and extractor fan are both on plug tops hence the double skt.

I am planning on running a cable from this socket down into an adjacent cupboard where the pump will be sitting. I plan to go into another SFS fused down to 3amp then onto another skt which will provide power for the pump. The FLC of the pump is 2amps.

Is this a feasible option or if there is another, possibly better way on doing this. Feedback would be greatly received.

Thanks alot

Why do you want the shower pump to come on with the light and fan? I used to have a shower pump, and I'm 99% sure it had built-in flow switches so it switched itself on when water started flowing i.e when the shower mixer valve was opened. No need for any external switching.

 

[ruston]

Why do you want the shower pump to come on with the light and fan? I used to have a shower pump, and I'm 99% sure it had built-in flow switches so it switched itself on when water started flowing i.e when the shower mixer valve was opened. No need for any external switching.

Similar, my power shower is wired direct from mains supply via FCU. then it is controlled by the two high and low flow switches on the unit.
Earlier models had variable control.
Have it on with the fan by all means , but with the lights on day during the day in these days of conservation is wasteful , unless conditions require lighting.

This is a power shower with pump in the unit.

 

[mache]

Why do you want the shower pump to come on with the light and fan? I used to have a shower pump, and I'm 99% sure it had built-in flow switches so it switched itself on when water started flowing i.e when the shower mixer valve was opened. No need for any external switching.

There is of course a possible positive to this especially if the pump does have flow switches installed. That being that the extractor fan must be running to enable a shower to take place thereby ensuring some kind of moisture control in the room and also because the light will be on the generated heat (even if it's low) will help prevent condensation forming on it and the fitting and thereby likely increasing it's life. Also it would prevent the pump running if a flow switch fault developed and caused the pump to run with a stalled water flow which would severly decrease the life of the pump. But I'm not exactly sure this was the thought process incoming up with the switching arrangement as none of that is mentioned in OP.