- Project plans
- Project activities
- Legislation and standards
- Industry context
- Specialist wikis
Last edited 08 Nov 2020
To help develop this article, click 'Edit this article' above.
Category 5 cable (CAT5 or Cat 5) is the fifth generation of standard, twisted-pair cable used for carrying signals, typically ethernet. It provides performance of up to 100 MHz and is commonly used for wired local area networks (LANs) and can carry data, telephone communications and video. It is possible to carry multiple signals on a single cable.
CAT5 cable usually, although not always, contains four twisted pairs of copper wire. These can be solid or stranded. Solid can be used over longer runs and is best suited to permanent wiring whereas stranded is more flexible and so is better able to withstand bending commonly encountered in temporary uses.
An enhanced specification CAT5e provides improved crosstalk and system noise characteristics. In addition newer, higher performance standards have been developed such as CAT6, CAT6a and CAT7, however CAT5 and CAT5e remain popular as they are relatively economical and provide a reasonably good standard of performance.
 Find out more
 Related articles on Designing Buildings Wiki
- Building information modelling.
- Computer aided design.
- Information and communications technology.
- Common data environment.
- Computer aided manufacturing.
- Computers in building design.
- ICT and Automation (ICTA) Scoping Study Report.
- In-building wireless.
- Internet of things.
- Local area network.
- Power over ethernet.
- Smart cities.
- Smart buildings.
Featured articles and news
New fire safety requirement comes into force.
Different types of bridges are meant to move.
A logical approach to handling the internal voice of self doubt.
First fashionable in the US, decorative metal has become globally desirable.
Helping communities preserve and enhance historic environments.
Creating comfortable climates despite extreme temperatures.
Study examines how adjustable arrangements can succeed.
Government announces plans to improve accessibility.
Resource addresses pandemic-related NEC4 contract issues.
Incorporating EDI into the provision of fair access.
Government announces global innovation strategy.
An architectural biography. Book review.