Given that the current carrying capacity of 2.5mm^2 PVC SWA is quoted at =
~23A upto 70=B0C and 2.5mm^2 XLPE SWA is quoted at ~36A upto 90=B0C
I realise that appropriate de-ratings for ambient=20 temperature/grouping/insulation/fixing method need to be taken into=20 account, in this case buried direct with for majority of the run with=20 the final 1m at each end cleated to brick and wooden post respectively,=20 as well as voltage drop over the cable length.
When (if ever) is it appropriate to make use of the XLPE's higher=20 rating, what type of terminals can be judged to handle the maximum 90=B0C= =20 temperature? Do they have to be made from thermosetting rather than=20 thermoplastic material?
How about an adaptable box like=20
Also what is an acceptable upper assumption to make for ambient=20 temperature of a shed?