Ethernet FAQ-Unshielded versus Shielded Cable

GET, LLC continues our look at the world of structured cabling for computer networks. This blog post examines cable shielding.

Unshielded and shielded cables have a few deployment requirements that one should keep in mind when deciding which is best for your particular network. Experts argue that unshielded cable have an installation advantage over shielded cable.

Unshielded cable is smaller in size because it lacks a shield and is less fragile which is much better for repeated movement or disconnects from a network. Manufacturers say that such cabling will transmit at the same speeds as shielded and does not require that a ground be used to function properly. Unshielded is vulnerable to more noise on the line, but its helps negate this by the twists in the pairs.

Shielded cable is foil wrapped around the four twisted pairs and actually attracts more noise than unshielded. The difference is that it was designed to offload that noise down a ground wire and away from the twisted pairs. Shielded cable is designed to be used in any application where EMI (Electromagnetic Interferences) are high, such as heavy power lines or radar systems. Shielded cable will actually perform worse than unshielded if it is not installed and terminated correctly. This is because the shield actually attracts noise.  Network professionals say that it is vital that the ground be connected properly in order to offload that noise and keep it away from the data being transferred.

For more on a structured cabling solution for your respective business or facility, please give GET, LLC a call at 671-797-0789 or see our website at www.get-guam.com for more details on how we can be of assistance.