Create double spur box from one

adriang78 · 25 Jun 2010

Hi, I'm fitting a shower pump in the airing cupboard of my bathroom.
There is a spur socket already there for the emersion heater, can i make this into a double socket easy enough, or will I have to run a new wire down from the junction box in the attic?

Cheers

Sparklms · 25 Jun 2010

What is the pump rated at? the spur will most likely be on its own 16a supply could you just not put the pump into the spur?

adriang78 · 25 Jun 2010

Hi, the pumps a 1.5 bar. it says to connect it to a 230-240V ac supply fused at 3amps via a double pole isolator.

Do you mean wire it in to the existing spur along with the emersion, doubling up?

plugwash · 25 Jun 2010

What circuit is this fused spur on? What is that circuit rated at?

adriang78 · 25 Jun 2010

Not sure, is there a way of working that out?

Sparklms · 25 Jun 2010

Testers! turn your mcb`s off one at a time, it will more than likely be on a 16a supply on its own though most immersion heaters are.if not it could be on the house ring.

Sparklms · 25 Jun 2010

Also if your going to use the fcu and the pump is rated at 3 amp you will need to check the fuse inside the fcu and downrate to appropriate size.

adriang78 · 25 Jun 2010

could I just put a plug on it instead of wiring it in?

Sparklms · 25 Jun 2010

I suppose so you`d have to change the fuse in the plug top though to an appropriate size.Is the fcu surface mounted? if so just swap it for a double box and connect the twin and earth into a double socket.

Do you still use the immersion?

adriang78 · 25 Jun 2010

Yeah still use the immersion. What is FCU

wingcoax · 25 Jun 2010

FCU Fused connector unit. Switched or un switched

adriang78 · 25 Jun 2010

The immersion switch is in the kitchen, the box is in the airing cupboard.
Am I right in thinking then I can get a new box which will accomodate both the immersion and the pump?

Sparklms · 25 Jun 2010

just spur off next to it and fit another single box at the side, its litterally a 2 min job.

adriang78 · 25 Jun 2010

Sparklms said:
just spur off next to it and fit another single box at the side, its litterally a 2 min job.

OK, think that's simple enough. The earth on the spur that is there is conected to the the pipe on the tank. Is that right and do I need to run a new earth to the same point?

Sparklms · 25 Jun 2010

its just a bond im guessing if its tagged to your pipe? although i dont know why if your mains water is bonded from the consumer unit and cross bonded under sink ect if not its just earthing the tank. Just run a peice of 2.5mm twin and earth into a new box from the incoming side of the fcu already in placde and connect as appropriate then connect your pumps flex into the outgoing side of the new fcu or just plug it in if your putting a socket there.

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Create double spur box from one

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