OK the main incoming SEC was done correctly other than the hole needs to be sealed up for water and insects protection. My question is that as you can see the cable company came and ran a boatload of cable through the sec sleeve? What do you think?
If you run a network cable, such as for internet, right along side of an electrical line it will disrupt frequencies into the network cable slowing speeds down. Networking cables will pick up the alternate current field around the electrical line. The two cables should not be in the wall cavity, but can be on the opposite sides of a wall stud. I pretty sure on the older coax you could run them in the same conduit, but I imagine with the new HD televisions this might cause a problem with clarity.
Condo Bob was once a TV cable guy, maybe he can answer the question about coax.
James is correct, the technical term is Parasitic oscillations. You can observe/hear them by driving next to High tension lines with your AM radio turned on to a weaker station. That buzzing sound is similar to effect of running cable lines next to SEC.
There is nothing wrong with running telephone and cable wires with the power. This is done all the time. Cat5 wire is twisted to block the interference from power.
If not an issue with the NEC, it must have an issue with someone else, for I have never been able to run Communications and power in the same conduit.
There is also a requirement on distance between the conduits that is not readibly available to me.
The conduit that you’ve mentioned is merely a sleeve through the sheathing and is not a raceway. Also cables are permitted to be run next to each other even through the same sleeve.