Re: Slightly OT: Joining cables to be used under water....

["Adam Walker" <adamwalkerinuk@xxxxxxxxx>]

This is very interesting.
I bought a large similar tank last year to do the same, but have not got
around to it yet.
That an automating all of teh garden irrigation over summer.

Do you have any pictures?
How are you going to use you HA server to control the pump just via float
switches in the new header tank?


On 12/02/2008, Vargster <vargster@xxxxxxx> wrote:
>
>   I've got to join two cables to make a watertight seal... how?
>
> To explain, I've installed a 1500 litre tank in the garden to collect
> rainwater to be used to flush the toilets in the house.
> There is a small pump in the bottom of this tank, to pump the water up
to
> a
> new header tank in the loft, before it comes down again to the
toilets.
>
> The problem is that the pump comes with a 1 metre lead power. It's a
> lightweight flexible mains cable, but it only carries 12V, I've got to
> extend this to get power to the pump outside the tank.
> The real problem is that the tank is 1.8 metres deep, meaning that a
lot
> of
> the time the joint will be under water...
>
> I've tried soldering the cables together, then giving it a couple of
thick
> coats of silicone sealant, which seems to work, but on further
inspection
> the sealant does bond too well to the cables outer sheath. Sanding the
> sheath to rough finish doesn't help either.
>
> Keeping the pump at the bottom of the tank seems the best plan as it
will
> generally be away from any ice that may form in the tank, though to be
> fair
> I haven't seen any ice in there, even on days when my "control
bucket" of
> rainwater has 1/2" of ice on it.
>
> I've thought about floating the pump on a styrofoam pontoon on the
surface
> of the water in the tank, but the pump is the size of a coke can, and
> weighs
> nothing, which causes a problem of what to do with the 15mm+ of fairly
> rigid
> hose that takes the water out the pump and out of the tank...
>
> Any ideas, solutions, thoughts, etc gratefully accepted...
> Lee
>
> PS. Bringing it right back on topic, of course it's going to be
controlled
> by the HA server...
>
> [Non-text portions of this message have been removed]
>
>
>


[Non-text portions of this message have been removed]