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Sealing off through holes for electrical cables

Dugsy · 2010-06-17 07:15:28

I have a number of outdoor lights and sockets on my block build, but the electrician used a rather large ¾” bit for the holes to feed the cables out through. Can these holes be sealed off or is there a danger in doing so that the cable may overheat when the lights are on. If they can be sealed what should I use –…

17-06-2010 7:15am

#1

Dugsy

Registered Users, Registered Users 2 Posts: 24 ✭

Join Date: June 2010

Posts: 6

I have a number of outdoor lights and sockets on my block build, but the electrician used a rather large ¾” bit for the holes to feed the cables out through. Can these holes be sealed off or is there a danger in doing so that the cable may overheat when the lights are on.
If they can be sealed what should I use – sand/cement mix, expandable foam, something else.
Any help appreciated.

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#2 17-06-2010 8:07am

Poor Uncle Tom

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Posts: 12506

Firstly it is not good practice to have unprotected wires going through a hole in the wall. They should be inside conduiting. If they are inside a conduit any space between the conduit and the hole edges can be sealed using sand/cement to set similar to the surrounding wall.

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