Cat6 Cable Guide

Category 6 cable, also commonly known as network, LAN or Ethernet data cable, is a 4 twisted pair sheathed copper wire cable that can support data transfer rates of up to 1 gigabits (1,000 megabits). This higher bandwidth allows for quick transferral of large files in an office network.

It is compatible with fast Ethernet 10BASE-T, 100BASE-TX and Gigabit networks, and is backwards compatible with previous iterations, such as Cat5/5E and Cat3.

Either end usually has an eight-position eight connector (8P8C) RJ45 jack which is used to connect two devices together with the Cat6 cable. It’s important to use jacks that meet the Cat6 rating in order to get the full performance it delivers.

As with all Ethernet cables, it can be identified by the labelling on the outer sheath.

There are two types of category 6 cable:

Essentially it comes down to quality, speed and price.

A network will always run at the speed of the slowest device or component, so mixing the two will cause the entire network to run at the speed of the one with the lowest specification.

Cat5 is obsolete and has been replaced by Cat5e. Good quality Cat5e (the “e” stands for enhanced) cable can run at near, or at, gigabit speeds, whilst Cat6 is specifically certified for 1-gigabit operation, therefore offering increased speed over Cat5. Cat6 can perform up to 250MHz whilst Cat5e can only operate up to 100MHz. Cat5e is more economical, has almost comparable speeds and comes in many colours to match the environments they're placed into.

If you are looking to buy Cat6 cable, it is better in comparison, but you will pay more for it, and the increases it delivers are marginal in perception. It's all about making the right choice for the right environment.

Can You Get Outdoor Cat6 Cable (Waterproof)?

Cat 6 cable can be used outdoors as long as you purchase a waterproof variety. This comes with an additional outer sheath in order to waterproof it. As a result, this makes the cable a bit wider and stiffer, which in turn makes it stronger too. It does however mean that the minimum bend radius is reduced due to the increased thickness, so this needs to be taken into consideration.

What is the Difference Between a Cat6 Patch Lead and a Crossover Cable?

A Cat6 patch lead or cable, also known as a straight-through cable, is used for connecting devices of different types, like a computer to a switch or hub.

Ethernet crossover cable on the other hand is used for connecting two types of the same device together e.g. two computers.

When Do I Need Cat6 Plenum Cable?

Plenum cable is used in spaces generally reserved for HVAC areas, usually under raised floors or above suspended ceilings within buildings. It has special insulation giving it smokeless and low flame characteristics.

In general, Cat6 plenum cable costs more as the materials used to create them must meet more stringent criteria. As a result, it is more expensive than standard PVC cable.