On 12/10/2020 11:23, Tricky Dicky wrote:
On Monday, 12 October 2020 at 11:08:01 UTC+1, Roger Hayter wrote:
On 12 Oct 2020 at 09:51:55 BST, "Tricky Dicky"
wrote:

Are you worried about insulation derating the cable or chemical
effects on the cable jacket? I must admit I would assume in both
cases it is designed to go in some unpredictable unsavoury places
and would be ok. But I have no basis for saying that.


-- Roger Hayter

Roger it is about derating the cable, I know the PU should not react
with the cable. Previously it was buried maybe not intentionally in a
thick lump of plaster which fell away when I pulled the old
floorboards out and was finally able to see the situation.

Owain, I take it from the smiley moving the cutout was not a serious
suggestion, apart from involving the DNO again there is nowhere for
it to go things are very tight around that area with the CU and
meters.

Richard

A foot of foam on a meter of fat copper cable is not going to derate
anything significantly.

Copper conducts heat damned well

I am fairly sure my armoured incoming comes up a foam filled pipe...

--
To ban Christmas, simply give turkeys the vote.