"No?". No what?
burying cables in the wall
- Thread starter DaveofEdgehead
- Start date
"No?". No what?
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H
holmslaw
..
I'm "on about" sheathing.
You cut a chase in the plaster. You run in your Twin and Earth, you get some lengths of sheathing, and you use masonary nails to fix it to the wall. You then plaster it back up.
Don't tell me, you all call it "capping" or some such and had no idea what I was on about.
You cut a chase in the plaster. You run in your Twin and Earth, you get some lengths of sheathing, and you use masonary nails to fix it to the wall. You then plaster it back up.
Don't tell me, you all call it "capping" or some such and had no idea what I was on about.
We always called it sheathing
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H
holmslaw
..
P
Paul_C
You are permitted to work to any standard you like so long as the result is a "reasonably safe" installation. Other European standards are mentioned specifically in the Approved Document, but that doesn't mean that a non-European standard would not meet the very broad requirement of Part P. Getting some bureaucrat from the local authority to acknowledge that is another matter, of course.
OK, here's a picture I found of some cables covered in sheathing / capping. And no one knows what I'm talking about?
BTW, I call the outer covering of twin and earth "insulation", it is after all double insulated cable.
No, you don't need to cover it in sheathing (sic).
BTW you are wrong.
No, it is insulated and sheathed cable - take a look at Appendix 4.
Please correct me, but I think that a single 2.5mm² T+E in conduit buried in plaster is rated at 23A. With two cables in the conduit, the grouping factor is 0.8, so the current carrying capacity drops to 18.4A. I think this is inadequate for a RFC where the cables should be rated at 20A.
I don't know how plastic or metal capping affects the cable's ccc, but I suspect it is similar to conduit as there is no intimate contact between cable and plaster. I must be missing something because it seems accepted practice to group two 2.5mm² T+E cables in conduit or under capping buried in plaster.
Depends on the size of the conduit.
H
holmslaw
..
Can I thank all who responded to my my question. It was interesting to see how the discussion went.
For the record we decided not to place the cable behind the skirting but channeled up the wall from the socket through the loft and back down the wall on the opposite side.
For the record we decided not to place the cable behind the skirting but channeled up the wall from the socket through the loft and back down the wall on the opposite side.
What was the route like through the loft?
Did the cable run through any joists, or under boards?
Through or under insulation?
Did the cable run through any joists, or under boards?
Through or under insulation?
It was run within conduit in the loft above the joists
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