Network cabling standards for schools & colleges

Government Network Cabling Standards for Schools & Colleges

The Department for Education (DfE) mandates the use of Cat6a copper cabling and OM4 fibre for school and college networks. Cat6a supports high-speed 10 Gigabit connectivity, making it ideal for future-proofing educational infrastructure. This type of cabling is essential when upgrading Wi-Fi (especially to Wi-Fi 6), replacing legacy systems, or planning new builds. To ensure optimal performance and safety, all cabling components must be compliant, correctly installed, and clearly labelled. Read on for a detailed look at installation guidelines and best practices.

Here at NM Cabling Solutions, we have been involved in data cabling installations in schools and colleges for over twenty-five years and have seen the recommended network cabling standard gradually evolve over that time as technology and access requirements have changed. Our expertise and experience can help you meet the network cabling standards for schools.

From supporting the London Borough of Barnet and their approximately 200 schools to individual bespoke primary and secondary schools, through to Colleges and Universities

Network cabling standards for schools as per the DfE?

The Department of Education has specified three specific guidelines about network cabling standards for schools and colleges.

1. Copper Cabling should be Category 6A (Cat 6A)
2. Optical fibre cabling should be a minimum 16-core multi-mode OM4
3. New cabling should be installed and tested per the manufacturer's guidance, warranty terms, and conditions.

We will address each of these elements and why they are essential.

Copper Cabling should be Category 6A (Cat 6A)

Cat6a cabling is the standard cable to install for 10 Gigabit transmission speeds. It is capable of 500MHz and will achieve the required transmission speeds up to 90 metres over a permanent link or 100 metres, allowing for patch leads or direct links.

The older Cat6 standard only supports 10 Gigabits up to 55 metres and is therefore not recommended. In addition, some cable manufacturers make their own version of a Cat6 enhanced cable, which is specified as Cat6e Cable. This cable isn't an industry-recognised standard, so ensure the cabling system is Cat6a and not Cat6e

Therefore, given the pace of technological advancement, it is imperative to install the appropriate cabling standard to meet current and future needs.

When should you install Cat6a data cabling?

The DfE has recommended that Cat6a is the standard for schools and colleges and should be installed in the following cases:

1. When upgrading a Wi-Fi or wireless network
2. Replacing the current underperforming network cabling system.
3. For example, the cabling is limiting the capabilities of the IT Hardware
4. When installing into a new build project
5. When expanding a current school or college

The choice of appropriate data cabling is becoming increasingly important when considering the DfE recommendation for Wi-Fi installations. In addition to network cabling standards for schools, they advise on the best minimum Wi-Fi and broadband requirements.

From the following link, "Wireless network standards for schools and colleges", they state

"The wireless network should use the latest standard approved by the Wi-Fi Alliance, Wi-Fi 6 (802.11ax)."

As Wi-Fi 6 offers a maximum throughput of 9.6Gbps, your cabling must be capable of maximising that technology.

Indeed, the DfE states in the same article, "The speed of your wireless connection may be affected by your internal network cabling."

How to Meet the Cat6a Cabling Standard for Schools

When installing a new data cabling standard, it is imperative that you classify not only the required cable but all the elements of a professional installation. If not installed correctly, a poorly installed Cat6a cabling installation will function no better than older standards.

Cat6a cabling standards require tighter testing, so an expert installation is required.

From experience, we at NM Cabling recommend the following in accordance with and in addition to the DfE requirements.

1. For the category 6A cable, U/FTP – An unshielded outer shell/foil-shielded twisted pair is recommended.
2. Each cabling link must be no more than 90 metres.
3. Euroclass Cca s1b.d2.a2. Sheathed cable to be used for meeting fire regulations - For further information on cabling fire standards, please click here.
4. Additional containment is to be installed where required to support new cables and maintain bend radius and separation from power cables and potential interference.
5. All elements of the cabling links are to be Cat6a
   1. Jacks / Modules
   2. Panels
   3. Patch Leads
6. All outlets and panels to have printed labels and unique identification (Cabinet / Number)
7. The installer is to supply a marked-up drawing showing the locations of the outlets, their relevant outlet numbers, and the cabinets.
8. The installer must be an approved installer of the recommended cabling system, such as an Excel Cabling Systems Partner, of which NM Cabling maintains accreditation.
9. New cabling should be installed and tested in line with the manufacturer's guidance, warranty terms, and conditions.
10. The installer must provide full test results from an approved cable certification tester, such as those listed on this list of testers.
    Without full test results, you will not know if it has been installed correctly.
11. A warranty supplied by the cabling manufacturer based on the test results
    The manufacturer will check that everything is correct in your installation

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NM Cabling is a technology and cabling integrator working throughout the United Kingdom