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How to Run Network Cables?


Hands down the best time to run your network cables is during the initial construction process of the building, but that usually isnt the case. This Blog will help the DIY’ers with running their network cables in fully completed buildings.

Fishing and Running the Network Cables


For a new building, it is wise to run the cables through designated conduits and to plan ahead to add additional cables to it at a later time if needed. Plan junction boxes at each floor.

For an old building, installing conduits mght not be possible. In this case you need to tie your cables in a bunch and secure the bunch to walls, ceilings, etc… You need to use a “fish tape” to fish your cables in the wall cavity. You might need to use a stud finder to avoid hiting any framing. Adjust your outlet’s position accordingly. Very often the help of a second person is needed when fishing cables, especially when you fish cables from the ceiling to an outlet, behind the wall. In this case one person feeds the fish tape down, or up depending on the situation, the other person tries to catch the fish tape with another fish tape or something similar. Once the fish tape is on the position, passed through the drywall hole, attach your cables to the fish tape using duct tape. Run a pull line as well, it will be very useful in the future, in the case you want to add additional cables or replace the defective ones.

Rules for running Network Cables.
Make sure before drilling any holesinto joists, that you follow the building codes.
Take care of the network cable integrity:

  • Do not drop objects on the cables
  • Do not step on the cables
  • Do not over-bend or over-twist the network cable

When you pull your cable through holes, do not pull too hard as this could stretch the cable andmodify its electrical qualities. Using a pull-string will provide additional firmness.
Try to avoid electric cables and other electromagetic sources.

Cable Length and Routes


On an Ethernet type network, typically, we use a star network topology. This means that all of the devices connect into a central point, which is usually a network switch. The network switch receives and distributes all the network packets to network devices.

You need to plan your network so that the longest path from any two network devices is less than 100m, (328ft). If this is not possible plan using additional repeaters or switches. Position your network room, to obtain the least cable lengths.

For additional information on running network cables feel free to leave a comment or call the ConnectZone headquarters.


Dann Oberholtzer

Dann "The Cable Man" Oberholtzer has been in the cable, Fiber Optic business Since the early 1980's that is over 30 years of experience !

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