"pls" wrote in message
...
Can anyone tell me what the cable carrying capacity of 20mm conduit is?.
The conduit is PVC coated galvanised steel with an internal diameter of
17mm. I need to know how many single core conduit cables (1.5mm or 2.5mm)
I can run in parallel (I assume this is based upon max current carrying
capacity of each core).

I find the practical limit to drawing them through is the two sets of three
single core needed for a ring main feed and return to a socket outlet and
that only if you feed them all through together. It might be possible to get
more down a completely straight run, but mine always have an elbow or two.

Colin Bignell