According to the Hubspot guide, you can fit 2 augmented category six cables (GigaLAN 10), 3 category 6E cables (GigaLAN), 4 category 6e cables (Advanced Net), 3cat6 cables, and 6 LAN cables in a 0.75 conduit. Some people do not believe that a contractor can pull 7 cat6 cables through a ¾ conduit.