For 6mm2 T&E, I would very likely use independent 20mm oval conduits, just one for every of The 2 cables, but I would guess you'd require 32mm oval conduit it you actually wished to place both of those in one duration. Use a mini hacksaw plus a miter box to https://liftshaftventilation35667.tribunablog.com/detailed-notes-on-mini-trunking-43420056