This is the sort of thing where the cable is expensive, but buy bigger cable as its a one time expense and doesn't cost that much more. If you think you need 6mm, then put in 10mm along with at least one, but preferably multiple Cat5e+ cables. You don't need to terminate the Cat5e's until you need them - but if you are running cable under floors / through walls etc do it right once
I initially put 6mm SWA into my garage (about a 10-15m run as it was more than I could possible use) but recently upgraded to 16mm as the 6mm wasn't enough as plans changed and evolved
I initially put 6mm SWA into my garage (about a 10-15m run as it was more than I could possible use) but recently upgraded to 16mm as the 6mm wasn't enough as plans changed and evolved