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The Wanderer The Wanderer is offline
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Default Waterproofing electrical connection

On Fri, 11 May 2007 07:47:14 +0100, Peter wrote:

I have a drainage pump in a manhole which connects to armoured cable in a
box at the top (inside) the manhole.
All is well until the pump breaks down, water level rises and the box does
not keep the water out.
Local electric store says they have nothing to help so I wondered .....
can I literally fill the box with silicon to solve the problem.
At the outset the connection should have been made above ground ( a wall
about 8 feet away) but alas, there is now not sufficient cable to play with
meaning the connection has to remain inside the manhole.
Any help appreciated.


I'd suggest a trip to your local electrical wholesaler and ask them for an
IP67[1] junction box that can take both a SWA cable and a flexible.

If you try to seal the existing arrangement, you'll really only be storing
up trouble for yourself if it goes wrong in the future. You could find it a
real bugger to get access is the box is full of sealant and it's all gone
tits up!

[1] IP 67 is the classification of box that will withstand complete
immersion in water.


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