For 6mm2 T&E, I would possible use individual 20mm oval conduits, just one for every of the two cables, but I would guess you would need 32mm oval conduit it you really planned to set both in one size. We'll give notification to the customer e-mail and/or billing deal with https://round-conduit02334.targetblogs.com/29579910/the-2-minute-rule-for-oval-conduit