Shower pump supply

[Peter Woodford]

Guys

Been asked to run a supply in for a pump for
a shower pump will be in loft space does this have to have it's own supply or do people come off of a existing socket or lighting circuit

 

[BillyBoBob]

Been asked to run a supply in for a pump for
a shower pump will be in loft space does this have to have it's own supply or do people come off of a existing socket or lighting circuit

Oh Dude you have no idea how obvious it is that your not an electrician.
Don't think many people will reply because we know giving you any advice could only make things worse.
Get a qualified electrician in.
No messin.
If you do something wrong in a roof space, there is so much dust and wood you could cause a fire in no time.
Please call a proper sparkie to do the job.

 

[Peter Woodford]

Thanks for your crap comment

 

[ezzzekiel]

pump will require 3-5a fuse so fuse down from lighting or spur from ring will suffice

 

[UNG]

I would also check that there is enough head of water for the pump to operate correctly in the loft

Some pumps need to be fitted with negative head pressure switches if there is not enough head of water

 

[Addlight]

Lighting circuit is fir lighting - in my book.

I'd hate to have to come along to test the thing later, take all the lamps out and scratch my head about the IR readings!

IMHO I'd go for a switch FCU off the ring - fused appropriately. That way it can be labelled up so people know what it is, and isolated easily.

 

[BillyBoBob]

Thanks for your crap comment

I wasn't being funny.
If you just put an FCU on a an exisiting lighting circuit, without looking into what type of protective device is being used, The installation method of the conductors, the design current of the circuit your putting the extra load onto (taking into account diversity), the length of run, the load of the pump, the size of the insulation around the cables. the ambient temperature, any grouping factors. all this and more needs to be assessed prior to you extending/adding to an existing circuit.
If you don't there is a REAL possibility you'll overload the protective device,
Lets assume for a moment alterations have been made to the installation since the designer came up with the original design. In 1990 He planned x1 100w lamp per room. Two tennants later, they changed it to x10 50w downlights per room
hell why not throw in a couple of extra flouresent fittings in the kitchen. now that little 3036 fuse is getting a bit warmer. so are the original cables that were designed to take a specific load. Now lets wack in a pump that will really push my 3036 fuse to it's upper limit. And oh my god would you believe it the insulation around my conductors has burned away my fuse didn't blow, that house is now in flames around my head.

And to add to his grief the insurance company refuses to pay out.

and you end up in jail because you didn't comply with BS7671

Still you got paid right?

 

[robsparky1975]

30ma rcd protection?

 

[Peter Woodford]

Circiut has 4 lights and 1 extract fan only so will be ok

 

[ezzzekiel]

that will be fine, run it through a rcd fcu if there is no rcd on board