wrote:
On 19 Aug,
John Rumm wrote:

It reduces it a little, but not much. Column C is the normal figure for
"clipped direct" or a cable buried directly in plaster. Using conduit
results in de-rating to the figures shown in column A. So 2.5mm T&E
drops from 27A to 23A

And then you stick two cables in and it drops to 19.5, just below what is
necessary for a ring.

Two smaller conduits solve that problem, and are often easier to thread
anyway.

--
Cheers,

John.

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